UniFi UNAS 4 NAS Review – Simple Safe Storage?

The UniFi UNAS 4 is Ubiquiti’s desktop 4 bay NAS and part of the company’s growing UniFi storage portfolio. Positioned as a compact network storage appliance, it is designed to provide centralized file storage, backups, and shared access within a local network, while also integrating with the wider UniFi management platform. The 4 bay form factor is widely considered a practical starting point for NAS deployments, offering enough capacity for RAID redundancy while maintaining a relatively small physical footprint suitable for offices, home labs, and small business environments. At $379, the UNAS 4 enters the market as a relatively affordable turnkey NAS that includes both hardware and the UniFi Drive software platform. The system combines traditional SATA storage bays with NVMe SSD caching support and 2.5GbE networking, while also introducing PoE+++ power as a deployment option. On paper, the device aims to deliver a straightforward storage solution that focuses on core NAS functionality rather than attempting to compete directly with more feature heavy platforms.

UniFi UNAS 4 Review – Quick Conclusion

TLDR: The UniFi UNAS 4 is a compact $379 4 bay NAS aimed at straightforward file storage and backups, with a clean UniFi oriented deployment that includes PoE+++ power plus data over a single cable and a bundled 90W adapter for non PoE setups. It combines 4 SATA bays with 2 M.2 NVMe slots for SSD caching, simple click and load drive trays, and a small front status display, while UniFi Drive provides the expected NAS services such as SMB and NFS access, RAID options, snapshots, encryption, share links, and multi user management, plus backup support that can include other UNAS targets, SMB destinations, and several cloud providers. The main compromises are the single 2.5GbE port that caps throughput and offers no redundancy, NVMe trays not being included despite the slots being present, and a USB C port that currently functions mostly for basic external storage rather than broader expansion, so it fits best when the goal is uncomplicated storage within a UniFi managed environment rather than a more flexible, performance oriented NAS platform.

BUILD QUALITY - 9/10

HARDWARE - 7/10

PERFORMANCE - 7/10

PRICE - 9/10

VALUE - 9/10

8.2

PROS

$379 pricing is competitive for a turnkey 4 bay NAS with UniFi Drive included
4 bay 2.5 inch and 3.5 inch SATA support for flexible capacity planning
2 x M.2 NVMe slots for read and write SSD caching
PoE+++ support enables single cable power plus data deployment
90W PoE+++ mains adapter included, so PoE infrastructure is optional
Simple click and load HDD trays with straightforward access for drive installs and swaps
Front 1.47 inch color LCM display provides basic status and activity visibility
UniFi Drive software includes RAID options, snapshots, encryption, share links, and user management

CONS

Single 2.5GbE port limits throughput and provides no network redundancy or aggregation
M.2 NVMe trays not included, adding cost to use SSD caching
USB C port is currently limited in utility beyond basic external storage attachment

You can buy the UniFi UNAS 4 NAS via the link below – doing so will result in a small commission coming to me and Eddie at NASCompares, and allows us to keep doing what we do! 

UniFi UNAS 4 Review – Design & Storage

The UniFi UNAS 4 uses a compact desktop chassis that differs from the more traditional box shaped NAS designs seen from many competing brands. The enclosure is relatively narrow and deep, giving it a vertical appearance that resembles some earlier consumer NAS designs. The casing itself is constructed from polycarbonate rather than metal, which keeps overall weight down to around 2.6 kg without drives installed. Ventilation is primarily handled through openings along the upper portion of the chassis, with airflow directed toward a rear mounted cooling fan.

At the front of the unit is a small 1.47 inch color LCM display that provides basic system information. This panel is not touch enabled but can show details such as drive activity, network activity, and general system status. It acts primarily as a quick visual reference rather than a full control interface. For most configuration and monitoring tasks, the system is intended to be managed through the UniFi Drive interface via a web browser or mobile application.

The primary storage configuration consists of 4 drive bays supporting either 3.5 inch or 2.5 inch SATA drives. Each drive uses an individual tray that slides into the chassis and clicks into place without requiring screws for 3.5 inch drives. The trays are ventilated and designed for relatively straightforward installation or replacement, although they are not lockable. Compared with earlier UniFi NAS designs that grouped multiple drives into a single tray, the use of separate trays simplifies drive access and improves hot swap usability.

In addition to the main hard drive bays, the system includes 2 M.2 NVMe slots intended for SSD caching. These slots are located in a separate compartment on the base of the device and can be accessed by removing a small cover using the included key. Once installed, these SSDs can be used to provide read and write caching to improve responsiveness when working with frequently accessed data. At the time of writing, these NVMe drives cannot be used as independent storage pools and are limited to caching roles.

One design choice that may affect installation is that the trays required to hold the NVMe SSDs are not included in the retail package. Instead, they must be purchased separately or obtained as part of pre populated SSD modules from Ubiquiti. While the M.2 slots themselves are built into the device, the lack of included trays adds an additional step and cost for users who intend to make use of SSD caching alongside the main hard drive storage.

UniFi UNAS 4 Review – Internal Hardware

Internally, the UniFi UNAS 4 is built around a quad core ARM Cortex A55 processor running at 1.7 GHz. This type of processor is commonly used in embedded networking hardware and lower power storage appliances, where efficiency and reliability are prioritized over raw processing performance. Ubiquiti has extensive experience deploying ARM architectures across its networking and infrastructure products, and the choice here aligns with the system’s intended role as a dedicated storage appliance rather than a general purpose server platform.

The system includes 4 GB of LPDDR4 memory, which is fixed and not user upgradeable. For the core functions the device is designed to handle, such as file transfers, backups, and storage management, this amount of memory is generally sufficient. However, the fixed memory configuration does place a ceiling on how much additional functionality the hardware could realistically support in the future, particularly if the software platform expands with additional services or heavier workloads.

From a power perspective, the system is designed to operate within a relatively modest power envelope. The maximum system power consumption is rated at 90 W, with a maximum drive power budget of 80 W. Power delivery is handled through PoE+++, allowing both data and power to be carried through the same Ethernet connection when used with compatible infrastructure. For deployments without PoE support, the device ships with a 90 W PoE+++ adapter, allowing it to be powered from a standard mains outlet while still maintaining the same connection layout.

UniFi UNAS 4 Review – Ports and Connections

The UniFi UNAS 4 keeps connectivity simple, with a single 2.5GbE RJ45 port handling both network data and PoE+++ power delivery. This allows the unit to be deployed with a single cable when used with compatible switches or injectors, which can reduce cable clutter and simplify placement compared with NAS systems that require separate power and network connections. The port supports 2.5G, 1G, 100M, and 10M link speeds, so it can operate in mixed networks even if 2.5GbE infrastructure is not available.

The main limitation is that there is only 1 network interface, with no secondary port for link aggregation, redundancy, or dedicated management traffic. In practical terms, this reduces options for failover and makes the network connection a single point of dependency. It also places a hard ceiling on throughput, which is relevant on a 4 bay system where aggregate drive performance can exceed what a single 2.5GbE link can sustain in some workloads.

For external expansion, the device includes a 5 Gbps USB C port intended for attaching external storage. In its current form, it functions primarily as a straightforward way to connect a USB drive for basic transfers rather than as a broader expansion interface. The hardware capability suggests potential for wider use cases, but the available functionality is mainly determined by what UniFi Drive supports at the software level.

UniFi UNAS 4 Review – Software and Services

The UNAS 4 runs UniFi Drive and is managed through the same UniFi style web interface used across the wider portfolio, with system status, storage, backups, and user access presented through a single dashboard. For typical NAS use, the core functions are in place: initializing drives, building RAID storage, creating shared and personal drives, enabling file services, and checking drive health information. The interface is mostly structured around completing common tasks quickly and keeping administration consistent with other UniFi products, rather than exposing a long list of granular configuration controls. That approach makes initial setup and day to day management relatively straightforward, but it also means experienced NAS users may notice limits in how far the system can be tuned.

File access is centered on SMB and NFS, with browser based file management available for basic upload, download, and folder navigation. The web file manager covers essential functions and includes share link creation plus thumbnail and preview handling, but it is not designed as a full productivity layer with collaborative editing or advanced file workflow tools. Client access is largely built around standard network shares and UniFi’s account-driven identity layer, and while the system can be deployed locally without relying on a UniFi account, the most integrated remote workflow is clearly designed around UniFi’s own UI and identity services rather than third party remote networking options.

Data protection features cover most of what is expected for a general purpose file NAS. UniFi Drive supports snapshots, encrypted storage, and configurable retention policies, which covers common rollback needs and basic ransomware recovery strategy when paired with sensible scheduling. Backup tooling is one of the stronger areas in terms of scope, supporting tasks to another UniFi NAS, to SMB targets, and to cloud services such as Google Drive, OneDrive, Dropbox, Amazon S3, Backblaze B2, and Wasabi. Time Machine support is also present for macOS environments, and Microsoft 365 backup is part of the broader UniFi Drive direction, even if the overall feature set remains more storage and protection focused than application focused.

The limitations are consistent with the UNAS 4’s role and its hardware profile. There is no iSCSI target support, which restricts certain virtualization, hypervisor, and block storage workflows, and there is no container or VM layer intended for running third party services directly on the device. NVMe support remains limited to SSD caching rather than separate pools, and on the UNAS 4 that caching is also constrained by the single 2.5GbE connection, which can cap how much of the cache benefit is visible over the network in sustained sequential transfers. More broadly, system level configuration remains relatively contained, with fewer advanced networking and scheduling controls than many established NAS platforms provide.

Client side tooling is also still relatively limited compared with ecosystems that offer a more developed sync, selective download, and offline pinning experience across desktop and mobile. UniFi Drive does provide client app support and identity driven access, but the overall workflow remains closer to traditional network share usage than to a full cloud drive style experience. As it stands, the software aligns with the UNAS 4’s positioning as a storage and backup appliance with a clean management layer, rather than a platform intended to replace a more feature dense NAS operating system.

UniFi UNAS 4 Review – Noise, Temp, Temp & Performance

In practical use, performance on the UNAS 4 is largely shaped by its single 2.5GbE connection. With mechanical drives, the system can deliver consistent transfer rates that sit within the expected ceiling of a 2.5GbE link, but it does not have the networking headroom to take full advantage of what a 4 drive array can potentially deliver under sustained sequential workloads. This is most noticeable when using higher capacity 7200 RPM drives, where the combined throughput of multiple disks can exceed the network limit even before SSD caching is factored in.

Testing with mixed file transfers showed typical throughput in the range of roughly 180 to 250 MB/s depending on file type and workload, with higher results generally observed once NVMe caching was enabled. A 50 GB Windows transfer completed at a pace that aligned with these figures, with sustained rates remaining stable rather than spiking briefly and then dropping sharply. The overall behaviour suggests that the device can maintain steady network limited transfers, but it is not designed to chase peak throughput beyond what 2.5GbE allows.

NVMe caching improved responsiveness and helped maintain higher sustained transfer speeds, particularly during repeated reads and writes where the cache could play an active role. However, the caching implementation is limited to acceleration rather than acting as a separate storage tier, and the benefit is workload dependent. Large sequential transfers still remain constrained by the network port, while smaller or more frequently accessed data sees more practical gains from the cache layer.

From an operational standpoint, power draw remained relatively modest for a 4 bay system. A baseline measurement with no drives installed was around 14.1 W. With 4 HDDs and 2 NVMe SSDs installed, idle power use was observed at around 46 W, rising to roughly 50 to 51 W under active read and write workloads with moderate CPU and memory utilization. The relatively small gap between idle and active indicates that drive idle draw forms a significant portion of the total consumption in typical day to day use.

UniFi UNAS 4 Review – Conclusion & Verdict

The UniFi UNAS 4 is a compact 4 bay NAS that prioritizes straightforward storage deployment, particularly for users already running UniFi hardware and UniFi management. Its pricing, PoE+++ support with an included adapter, NVMe caching capability, and generally simple physical drive access make it a practical option for core NAS tasks such as shared folders, backups, and centralized file storage. The hardware choices are consistent with that goal, and the platform is best assessed as a storage appliance rather than a general purpose server. On the software side, UniFi Drive provides the expected baseline services for this category, including SMB and NFS file access, RAID options, snapshots, encrypted storage, share links, and multi user management. Backup support is broader than the basics, with options that can include remote UNAS targets, SMB destinations, and several mainstream cloud services, along with Time Machine support for macOS. Management is clearly aimed at keeping configuration simple through a unified interface, but it also remains more limited than mature NAS platforms in areas such as deeper system tuning, third party remote access alternatives, and broader application style features.

The trade offs are easy to identify. A single 2.5GbE port limits peak throughput and removes options such as link aggregation or network failover, which matters more on a 4 bay system than it would on a smaller unit. The NVMe slots are limited to caching rather than independent pools, and using them adds cost due to trays not being included. Cooling behaviour can become more noticeable if fan speed increases, and the USB C port currently operates mainly as an external drive attachment point rather than a broader expansion interface. Overall, the UNAS 4 makes the most sense when its role is kept narrow, and when UniFi Drive’s storage and backup feature set, alongside UniFi ecosystem integration, is a meaningful part of the purchase decision.

You can buy the UniFi UNAS 4 NAS via the link below – doing so will result in a small commission coming to me and Eddie at NASCompares, and allows us to keep doing what we do! 

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UniFi UNAS Pro 4 vs Pro vs Pro 8 NAS – WHICH ONE SHOULD YOU BUY?

Within UniFi, the UNAS line is positioned as a straightforward, storage focused, turnkey NAS platform that fits into the same single pane management style as the rest of the ecosystem, prioritizing file storage, sharing, snapshots, and backup workflows over broader server style expandability. In this 3 way comparison, the UNAS Pro (7 bay, Nov 2024), UNAS Pro 8 (8 bay, Nov 2025), and UNAS Pro 4 (4 bay, Feb 2026) look similar on the surface, but they target different deployment constraints and ceiling limits in rack depth, storage scalability, cache options, memory headroom, network redundancy, and power design. Two of the units (Pro 4 and Pro 8) add M.2 NVMe cache support and higher availability 10GbE networking than the original Pro, while the Pro 8 also pushes furthest on RAM capacity and physical redundancy expectations for a rack install.

BUY
Pro	More 3.5 inch bays than UNAS Pro 4 at the same $499 price (7 vs 4)	1U chassis (smallest height)	Most total bays (8) plus 2x NVMe cache slots
	Shallower chassis depth than both (325 mm), easier fit in short depth racks	2x 10G SFP+ instead of 1x 10G SFP+ on UNAS Pro	16 GB memory (double UNAS Pro and UNAS Pro 4)
	Front 10G SFP+ and 1G RJ45 placement can suit front of rack cabling	NVMe cache support (absent on UNAS Pro)	3 total 10 GbE ports (2x 10G SFP+ plus 10 GbE RJ45), most flexible networking
	1.3 inch touchscreen (absent on UNAS Pro 4 and UNAS Pro 8)	Longer CPU clock than UNAS Pro (2.0 GHz vs 1.7 GHz)	Hot swappable power modules (only model with this design)
Con	No NVMe cache support (both UNAS Pro 4 and UNAS Pro 8 have it)	Lowest bay ceiling and no official expansion path, so it fills up fastest	Highest price up front ($799)
	Only 1x 10G SFP+ (UNAS Pro 4 has 2x, UNAS Pro 8 has 2x plus 10 GbE RJ45)	Deeper chassis than UNAS Pro (400 mm vs 325 mm)	Deepest chassis (480 mm), most demanding fit in shallow racks
	Lower CPU clock than UNAS Pro 4 and UNAS Pro 8 (1.7 GHz vs 2.0 GHz)	No hot swap PSU design (UNAS Pro 8 is the only one with hot swappable power modules)	No touchscreen (UNAS Pro includes a front touchscreen)
	Same 8 GB memory as UNAS Pro 4 and less than UNAS Pro 8 (16 GB)	Same 8 GB memory as UNAS Pro and less than UNAS Pro 8 (16 GB)	Higher power ceiling and max power consumption than the other 2 (250 W max)

At the same time, the lineup is notable for pricing that stays lower than many established rackmount NAS competitors at comparable connectivity, with both the UNAS Pro and UNAS Pro 4 landing at $499, and the UNAS Pro 8 stepping up to $799 for more bays, more memory, and more network paths. The practical decision usually comes down to whether the priority is maximum bays at the lowest buy in, a tighter 1U footprint with newer cache and dual 10GbE links, or a higher ceiling platform with the strongest long term headroom in bays, RAM, and connectivity for users who expect growth rather than a fixed storage target.

IMPORTANT – It is worth highlighting that all three UNAS solutions include the same software and updates in the UniFi Drive and NAS OS services. Alongside the client tools (eg Identity Endpoint and File/Folder services remotely) and can be easily integrated into an existing Ubiquiti/UniFi network landscape. HOWEVER crucially, it is not ‘mandotory’ – you can run any of the UNAS Pro systems completely ‘offline’ (i.e LAN only) and there is no need to already have an existing UniFi network (existing 3rd party network landscapes work perfectly fine) and you also do not need to use/register any kind of UI.com/Ubiquiti account to setup the device.

UniFi UNAS Pro 4 vs Pro vs Pro 8 NAS – Design

At a chassis level, the lineup splits into 2U and 1U designs, and that difference shapes how each unit fits into smaller racks and shallow cabinets.

The UNAS Pro is the shortest depth of the 3, while the UNAS Pro 4 and UNAS Pro 8 extend further back, which matters once you account for cable bend radius and rear clearance.

For compact wall racks and shorter cabinets, the older UNAS Pro tends to be easier to accommodate purely on physical depth, even before you consider anything about performance or features.

The UNAS Pro also stands apart on the front panel experience, because it includes a 1.3″ touchscreen that can surface live status information without needing to log into the UI. That is not present on the UNAS Pro 4 or UNAS Pro 8, which lean into a more conventional rack appliance faceplate focused on bay access and basic indicators. In day to day use, the screen is mainly a convenience feature for quick checks and basic local interaction, rather than something that changes how the system is deployed.

Another practical design difference is port placement philosophy. The UNAS Pro places its primary network connectivity on the front, while the UNAS Pro 4 and UNAS Pro 8 move connectivity to the rear, matching the typical layout most rackmount NAS systems follow. Front facing ports can reduce visible cabling in front of a rack and shorten patch runs in some UniFi heavy layouts, but rear mounted ports are generally easier to route cleanly in deeper cabinets with rear cable management.

Power implementation also affects the physical serviceability profile of each unit. The UNAS Pro 8 uses hot swappable power modules, which changes how you handle failure or planned maintenance compared with the fixed internal power approach used by the UNAS Pro and UNAS Pro 4.

All 3 use a steel enclosure and ship as purpose built rack devices rather than desktop conversions, but the UNAS Pro 8 is the one that most closely matches what many buyers expect from a higher end rack appliance in terms of field replacement for key physical components.

UniFi UNAS Pro vs Pro 4 vs Pro 8 NAS – Storage

The most obvious storage difference is the bay count and what that does to capacity planning. The UNAS Pro provides 7 front accessible 2.5 inch or 3.5 inch bays in a 2U chassis, the UNAS Pro 4 offers 4 bays in a 1U chassis, and the UNAS Pro 8 increases that to 8 bays in 2U. If you expect to grow into larger pools over time, the 7 bay and 8 bay models give more headroom before you are forced into drive replacements, a second NAS, or a new storage tier. With no official expansion chassis support referenced here, the physical bay count is effectively the ceiling for each system.

The UNAS Pro 4 and UNAS Pro 8 add 2 M.2 NVMe slots intended for SSD caching, while the UNAS Pro does not include NVMe slots. This changes how you can approach mixed workloads, because cache can reduce latency for repeated small file access and help smooth bursts of writes, depending on how the platform applies caching. It does not change the underlying reality that the main capacity tier is still the SATA bay set, but it gives the Pro 4 and Pro 8 a path to improve responsiveness for specific access patterns without committing to full SSD storage across all bays.

RAID flexibility also varies, not in the list of RAID levels available, but in how storage can be organized. All 3 units support RAID 5, RAID 6, and RAID 10, but the UNAS Pro 4 is listed as supporting a single RAID group, while the UNAS Pro and UNAS Pro 8 are listed with multiple RAID groups. In practice, the single group limitation matters if you prefer separating workloads or isolating different retention policies into distinct pools, rather than placing everything into 1 volume. On the larger models, multiple groups give more options for structuring storage around different priorities, such as performance versus redundancy, or shared storage versus dedicated project space.

Operational features tied to storage protection are also not identical across the range. Hot spare support is listed on the UNAS Pro and UNAS Pro 8, but not on the UNAS Pro 4, which affects how you plan for unattended recovery after a drive failure. All 3 support snapshots, file encryption, share links, Time Machine backup, and cloud and network backup targets, which makes baseline data protection and recovery workflows broadly consistent regardless of bay count.

The larger differentiation is therefore less about whether core protection features exist and more about how much flexibility you have in pool layout and drive management within the limits of each chassis.

All 3 systems are built around a quad core ARM Cortex A57 platform, but they are not configured identically. The UNAS Pro runs the Cortex A57 at 1.7 GHz, while the UNAS Pro 4 and UNAS Pro 8 are listed at 2.0 GHz. In day to day use, this tends to show up less as a dramatic jump in peak throughput and more as extra headroom when the system is handling several background jobs at once, such as indexing, snapshots, and multi user access, while still servicing file activity. The architecture choice is aligned with lower draw compared with typical x86 NAS hardware, but it also sets a ceiling on heavier compute workloads that some buyers associate with higher end NAS platforms.Memory is where the split is clearer. The UNAS Pro and UNAS Pro 4 ship with 8 GB, while the UNAS Pro 8 steps up to 16 GB. The practical impact is less about basic file sharing and more about how much concurrent activity the system can absorb before responsiveness drops, particularly when you add more users, larger file operations, more snapshot activity, and cache related behavior on models that support it. None of these systems are positioned as memory expandable platforms in the provided specifications, so the installed capacity is effectively the long term limit.

Power delivery and serviceability differ meaningfully between the range. The UNAS Pro and UNAS Pro 4 use internal AC to DC power supplies with an additional USP RPS DC input for redundancy, and their overall platform power limits are lower, matching their smaller scale.

The UNAS Pro 8 uses hot swappable power modules and is designed to support more demanding configurations, reflected in the higher maximum power consumption and the larger drive power budget. This does not automatically translate into higher idle power, but it does indicate how much overhead the chassis is designed to tolerate when fully populated and under sustained activity.

UniFi UNAS Pro 4 vs Pro vs Pro 8 NAS – Ports and Connections

Across the 3 systems, the shared theme is 10 GbE as the primary path for file access, but the implementation differs. The UNAS Pro provides a single 10G SFP+ port plus a 1 GbE RJ45 port, which typically ends up used either for management traffic or as a slower access fallback. The UNAS Pro 4 shifts to a dual 10G SFP+ layout, giving more flexibility for link aggregation or failover planning, even if the practical benefit depends on the storage configuration and client support. The UNAS Pro 8 goes further with 2x 10G SFP+ and adds a 10 GbE RJ45 port that supports multi speed negotiation, which makes it easier to drop into networks that are already built around copper 10 GbE.

Port placement is also part of the decision, because the UNAS Pro uses front mounted networking, while the UNAS Pro 4 and UNAS Pro 8 keep network connections on the rear. Front mounted ports can simplify short patch runs in racks that are set up around front facing switching, while rear mounted ports follow the more common rack NAS convention and can be cleaner in racks that route cabling at the back. None of the 3 is positioned as a platform for network expansion cards, so what you buy is the long term connectivity ceiling.

In day to day operation, the multi port models are mainly about resiliency and network design options rather than guaranteeing linear scaling for a single user. You can plan for redundancy across switches, use bonding where your environment supports it, or segment traffic patterns in a more controlled way.

The UNAS Pro 8 is also the only model here with 10 GbE available on both SFP+ and RJ45 in the base hardware, which reduces the need for media converters or additional transceiver planning if your network is not SFP+ centric.

UniFi UNAS Pro 4 vs Pro 8 vs Pro NAS – Price and Value

At list pricing, the UNAS Pro and UNAS Pro 4 sit at the same $499, but they are selling different priorities. The UNAS Pro concentrates its value in raw bay count and a shorter 2U chassis, trading away NVMe cache support and additional 10 GbE links to keep the platform simple. The UNAS Pro 4 is priced the same while reducing the HDD bay count and moving to a 1U chassis, but it adds 2x NVMe cache slots and a second 10G SFP+ port, positioning it more as a “small but fast access” rack NAS rather than a capacity first box.

The UNAS Pro 8 steps up to $799 and is priced like a higher tier option, but the spec sheet shows where that uplift is meant to land: more drive bays than either $499 model, NVMe cache capability like the Pro 4, more total 10 GbE ports, and a jump to 16 GB memory. It is also the only one of the 3 with a 10 GbE RJ45 port alongside SFP+, which can reduce friction in mixed copper and fiber environments. If the goal is to keep the same platform longer term, the Pro 8 is the only one here with both the capacity headroom and the memory ceiling to match it.

Using the simplified “price per bay” and “price per element” approach, the headline result is that the Pro 8 looks strongest once you count all the included hardware features rather than only the number of drive bays. The UNAS Pro has the lowest cost per bay because it is a 7 bay system at the same price as the 4 bay model, but the Pro 4 catches up when the NVMe slots and dual 10 GbE are treated as part of the value calculation. The Pro 8 is not the cheapest upfront, but it ends up close to the Pro 4 on cost per bay and is the lowest on cost per element because it stacks more of the “platform” features in one chassis.

UniFi UNAS Pro 8 vs Pro vs Pro 4 NAS – VERDICT

The UNAS Pro 4, UNAS Pro, and UNAS Pro 8 are close enough in naming to look like simple capacity steps, but they are positioned more like 3 different takes on the same UniFi Drive appliance idea. The UNAS Pro is the most capacity oriented at $499, giving 7 bays in a shorter depth 2U chassis with a built in 1.3 inch touchscreen and a straightforward port layout that suits some front of rack workflows. The UNAS Pro 4 shifts the emphasis away from bay count and toward “newer platform features” at the same $499 price, combining a 1U form factor with 2x 10G SFP+ and 2x NVMe cache slots, at the cost of a deeper chassis and fewer total drive bays. The UNAS Pro 8 is the most complete hardware package in the lineup, adding more bays, NVMe cache, more total 10 GbE connectivity including 10 GbE RJ45, and 16 GB memory, while also being the only one of the 3 to use hot swappable power modules. None of the 3 supports an official expansion shelf approach, so the bay count you buy on day 1 is effectively the long term ceiling unless you plan a separate NAS later.

Choosing between them mostly comes down to which ceiling matters first in your deployment: total bays, total network options, or overall platform headroom. If you want the most bays at $499 and the chassis depth is a priority, the UNAS Pro remains the obvious pick, with the tradeoffs being no NVMe cache path and a simpler network layout than the newer units. If you want the $499 option that aligns most with modern expectations for a small rack NAS, the UNAS Pro 4 has the cleanest argument, because dual 10G and NVMe cache can matter more than extra bays in smaller, faster working sets, even if those cache slots are not usable as standalone storage pools. If you are planning for longer retention cycles, heavier multi user access, or you simply want the most complete feature set in a single chassis, the UNAS Pro 8 is the one that most clearly justifies its higher price, particularly once memory, network flexibility, and the power module design are considered together. The main limitation across the lineup is that the ARM platform and fixed memory approach sets expectations about the long term performance ceiling, but within that constraint, the decision is primarily about how you want the hardware budget divided between capacity, connectivity, and overall platform resources.

	UNAS Pro (7 Bay, $499)	UNAS Pro 4 (4 Bay, $499)	UNAS Pro 8 (8 Bay, $799)
BUY
Pros	More 3.5 inch bays than UNAS Pro 4 at the same $499 price (7 vs 4)	1U chassis (smallest height)	Most total bays (8) plus 2x NVMe cache slots
	Shallower chassis depth than both (325 mm), easier fit in short depth racks	2x 10G SFP+ instead of 1x 10G SFP+ on UNAS Pro	16 GB memory (double UNAS Pro and UNAS Pro 4)
	Front 10G SFP+ and 1G RJ45 placement can suit front of rack cabling	NVMe cache support (absent on UNAS Pro)	3 total 10 GbE ports (2x 10G SFP+ plus 10 GbE RJ45), most flexible networking
	1.3 inch touchscreen (absent on UNAS Pro 4 and UNAS Pro 8)	Longer CPU clock than UNAS Pro (2.0 GHz vs 1.7 GHz)	Hot swappable power modules (only model with this design)
Cons	No NVMe cache support (both UNAS Pro 4 and UNAS Pro 8 have it)	Lowest bay ceiling and no official expansion path, so it fills up fastest	Highest price up front ($799)
	Only 1x 10G SFP+ (UNAS Pro 4 has 2x, UNAS Pro 8 has 2x plus 10 GbE RJ45)	Deeper chassis than UNAS Pro (400 mm vs 325 mm)	Deepest chassis (480 mm), most demanding fit in shallow racks
	Lower CPU clock than UNAS Pro 4 and UNAS Pro 8 (1.7 GHz vs 2.0 GHz)	No hot swap PSU design (UNAS Pro 8 is the only one with hot swappable power modules)	No touchscreen (UNAS Pro includes a front touchscreen)
	Same 8 GB memory as UNAS Pro 4 and less than UNAS Pro 8 (16 GB)	Same 8 GB memory as UNAS Pro and less than UNAS Pro 8 (16 GB)	Higher power ceiling and max power consumption than the other 2 (250 W max)

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Review of the UniFi UNAS Pro 4 NAS – Possibly the Best Value 1U Rack Ever?

Over the last 18-24 months, Ubiquiti has shifted the ‘UniFi’ label from being a networking and bridging ecosystem into a wider storage hardware and software platform that now includes a steadily expanding NAS line under UniFi Drive. Early UniFi UNAS storage products leaned heavily on simple file sharing and basic backup, but the pace of updates and the broader product rollout in 2025/2026 pushed the range closer to what small business buyers expect from an entry level NAS platform: clearer storage management, stronger snapshot and backup tooling, and tighter integration with the UniFi account and identity layer for remote access and user control (with the recent Drive 4.0 Update really uping their game considerably). The UniFi UNAS Pro 4 sits within that context as a compact 1U, 4 bay rack mount system designed mainly for file storage and sharing over SMB and NFS, rather than running third party applications, containers, or virtual machines. At $499, it is priced noticeably lower than many competing 1U rack NAS products at broadly comparable “headline” hardware, particularly where dual 10Gb networking and NVMe caching are concerned, which makes it hard to ignore if the goal is simple, high bandwidth storage in a rack footprint without moving into significantly higher spend.

UniFi UNAS Pro 4 Review – Quick Conclusion

The UniFi UNAS Pro 4 is a 1U, 4 bay rack mount NAS aimed at straightforward SMB and NFS file storage, and its main differentiator is value: at $499 it undercuts many comparable 1U rack units while still offering 2x 10Gb SFP+ plus a separate 1GbE management port, 4 hot swap bays for 3.5 inch or 2.5 inch drives, and 2 M.2 NVMe slots for read and write caching. In testing with 4 HDDs in RAID 5 over 10GbE, it delivered strong real-world file transfer results for a small SATA array, with synthetic benchmarks showing high peak throughput but some variability depending on the tool used, and the platform’s power draw and noise profile were heavily influenced by drive choice and fan mode, including very loud output if maximum cooling is forced. UniFi Drive covers the core fundamentals expected at this level, including snapshots, encrypted volumes, and a wide range of backup targets (NAS, SMB, and multiple cloud services, with Microsoft 365 direction evident in recent updates), but the interface still limits deeper tuning in places and the feature set remains focused on storage rather than apps. The main downsides are structural and easy to identify up front: NVMe can only be used for cache rather than storage pools, the NVMe carriers are an extra purchase, there are no USB ports for local copy tasks, the PSU is internal and not a hot swap module, and missing features like iSCSI, ECC, and RAM upgradability place a clear ceiling on more advanced workloads, though those trade-offs are broadly consistent with a $499 ‘turnkey’ NAS appliance in 2026 though and hard to criticise!

BUILD QUALITY - 9/10

HARDWARE - 7/10

PERFORMANCE - 7/10

PRICE - 9/10

VALUE - 10/10

8.4

PROS

Dual 10Gb SFP+ networking is unusual in a 1U 4 bay NAS at this price point + failover will not result in bandwidth throttle
A separate 1GbE port is useful for management or fallback connectivity
1U chassis with relatively short depth is easier to fit in smaller racks and cabinets
Rails and rack hardware included, reducing extra setup cost and friction
Ubiquiti and UniFi online/brand services are optional (i.e pure offline/LAN is possible)+ no need for a Ubiquiti/UniFi network setup to use
NVMe read and write caching support can improve responsiveness in mixed workloads
UniFi Drive provides snapshots, encryption, and a broad set of backup targets (NAS, SMB, and multiple cloud providers)
Setup and management are streamlined, especially for users already running UniFi infrastructure
Drive 4.0 Update scales up the Business Utilities notably

CONS

NVMe is cache only, with no option to use M.2 drives as primary storage pools
NVMe trays or carriers are not included, adding extra cost and an extra purchase step
Single PSU (no redundency) and non-slide removable SFX/ATX PSU (relies on propriatary UniFi Battery Backup rack module or external UPS)
No NAS Expansion Support, so 4 HDDs are your limit

You can buy the UniFi UNAS Pro 4 NAS via the link below – doing so will result in a small commission coming to me and Eddie at NASCompares, and allows us to keep doing what we do! 

UniFi UNAS Pro 4 Review – Design & Storage

The UNAS Pro 4 uses a conventional 1U rack mount layout, with a plain, functional front panel and an all metal enclosure intended for permanent installation rather than desktop use. It ships with rails and rack handles, which removes the usual extra step of sourcing mounting hardware separately. The chassis depth is about 400 mm, so it is not in the “full depth server” category, and that helps in smaller cabinets where rear clearance and cable management space can be limited.

Across the front are 4 hot swap bays supporting both 3.5 inch and 2.5 inch SATA drives. The trays are set up for tool-less 3.5 inch HDD installation with a click-in fit, while 2.5 inch SSDs still require screws to secure them properly. Each bay has status lighting, and the front panel also provides system level indicators so you can identify basic state and drive activity at a glance without logging into the interface. The trays feel rigid and spring-loaded, but they are not lockable, which is a practical consideration if the unit is placed in a shared rack or anywhere physical access is not strictly controlled.

From a capacity and planning perspective, this system is defined by its fixed 4 bay layout. You can configure a conventional RAID group within those bays, but there is no built-in path to scale beyond the internal slots, and there is no supported external expansion shelf option to push the same chassis further later on. That means the decision on drive sizes and redundancy level matters upfront, because the ceiling is reached quickly compared with higher bay count rack units. In a small rack deployment, it also means the unit is either a compact standalone store or part of a broader multi-NAS approach rather than a single box that grows over time.

In addition to the SATA bays, the chassis supports 2 M.2 NVMe slots intended specifically for SSD caching. The caching model is designed to accelerate HDD-based storage by using SSDs as a performance layer, rather than allowing NVMe drives to become their own primary pool for general file storage. Practically, that positions the NVMe feature as a supplement for mixed workloads, such as improving responsiveness for frequently accessed data and smoothing write behavior, rather than a route to running the system as a small all flash NAS.

A design detail that affects the storage experience is the physical NVMe mounting method. Instead of a simple screw-down slot on a board, the NVMe drives are installed via a tray or carrier mechanism, and that carrier is not included with the base unit. The carrier itself is neatly engineered with a clip-in style insertion and thermal padding, and it supports common M.2 lengths including 2280 and 22110, but requiring an additional part adds friction if caching is part of the plan from day 1. It is a small issue, but it is the kind of detail that can slow down an otherwise straightforward deployment.

UniFi UNAS Pro 4 Review – Internal Hardware

The UNAS Pro 4 is built around a quad core ARM Cortex-A57 CPU clocked at 2.0 GHz and paired with 8 GB of memory, which sets expectations for the type of workloads it is designed to handle. This is not a platform aimed at heavyweight compute tasks, but for file services and scheduled backup activity it has enough headroom to keep the system responsive, particularly when multiple users are accessing shared folders and snapshots are being taken in the background.

The CPU choice also reflects a focus on predictable appliance behavior and lower overall platform complexity rather than maximum expandable performance.

Internally, the power system is a single 150 W unit mounted inside the chassis rather than a hot swap module, which influences servicing and downtime planning. If the PSU fails, replacement is more involved than swapping an external canister, and that is a meaningful difference compared with rack systems that use easily replaceable redundant modules.

The unit does, however, support UniFi’s USP-RPS DC input as an alternative redundancy method, which changes the redundancy approach from “dual PSU in the chassis” to “centralized redundant supply for multiple devices,” with different trade-offs in cost, cabling, and rack layout.

A further internal design choice is how the system treats its software environment as a dedicated appliance rather than an OS sharing space with user storage. The system software runs on its own internal storage rather than living on the same disks that hold your data. In practical terms, that reduces the chance of the OS being affected by changes to the main array, and it can make maintenance tasks like drive replacement or pool rebuilds feel more self-contained, because the unit remains manageable even while the primary storage is under stress.

ARM-based NAS platforms typically bring some efficiency advantages, and this model follows that general pattern. The CPU class and memory configuration are aligned with lower baseline overhead than many x86 NAS designs, which can help keep idle draw and sustained power use in check relative to equivalent rack hardware, though drive choice still dominates the total. The trade-off is a lower performance ceiling compared with modern x86 systems for certain workloads, plus the usual limitations seen in this category: no practical RAM upgrade path, no ECC support, and fewer options for buyers who want to push beyond file services into heavier compute. At $499, those omissions are consistent with the target price bracket in 2026 rather than being unexpected corner cutting.

UniFi UNAS Pro 4 Review – Ports and Connections

The rear connectivity is centered on 2x 10Gb SFP+ ports, and that is the defining hardware choice for this NAS in a 1U, 4 bay format. It allows the unit to be placed into a 10Gb environment without adapters, and it also opens up practical options beyond raw throughput, such as separating traffic types, connecting into different switches, or keeping a second path available for failover. The choice of SFP+ over 10GBase-T will suit users already running fiber or DAC links in a rack, but it can be less convenient for small setups built around copper RJ45.

Alongside the 10Gb ports is a separate 1GbE RJ45 port that can be used for management or for general connectivity in networks where 10Gb is not available everywhere. In a mixed UniFi environment, this is useful because it avoids tying basic onboarding and administration to a 10Gb port that might be better reserved for file traffic. It also gives a simple fallback path for access and troubleshooting if the 10Gb side is being reconfigured, moved between switches, or temporarily taken offline.

What is missing is just as relevant as what is included. There are no USB ports for quick ingest, offline copy tasks, or attaching temporary media, which some rack NAS platforms still provide for convenience even in 1U designs. Wireless is not a focus here, though Bluetooth is present for initial setup workflows, which fits the product’s “appliance onboarding” approach more than it does ongoing connectivity. The result is a port layout that prioritizes network-first storage and rack integration, while leaving out local expansion and quick-access I/O features that some users expect on a NAS.

However, (and I am sounding like a broken record at this point) at $499, these ports and connections are a notable degree more than most other turn-key NAS solutions from Synology, QNAP and even Terramaster (the more budget end of the NAS market already) are offering at under 500! So, what is presented here is a great value Day 1 solution in terms of base connectivity, but there is no denying that it might well feel the pinch in 5 years down the road when your storage is filling and your storage speeds begin to bottleneck vs your other equipment bandwidth.

UniFi UNAS Pro 4 Review – Testing Noise, Temps, Power Consumption & Speed

Performance here needs to be framed around the physical limits of 4 SATA bays and the role of SSD caching. Even with dual 10Gb networking available, a 4 drive HDD array has a throughput ceiling that will be reached long before the network becomes the bottleneck in most single-client scenarios. The value of 10Gb in this context is less about hitting theoretical maximums and more about maintaining higher transfer rates consistently, handling multiple simultaneous users, and keeping latency lower when lots of smaller operations are happening alongside big file moves.

In testing with 4 HDDs in a RAID 5 configuration over a 10Gb link to a Windows 11 client, measured throughput landed in the range expected of a well-tuned 4 disk array. Using AJA with a repeated 1 GB test file, results sat around 680 to 730 MB/s for download and 520 to 600 MB/s for upload. A real-world Windows file transfer of 101 GB made up of 1,231 mixed files completed in 3 minutes and 57 seconds, which works out at an average of about 426 MB/s across the transfer, reflecting the usual drop from synthetic peak results when file variety and filesystem overhead are introduced.

Synthetic benchmarking results varied depending on the tool used, which is not unusual when caching behavior and test patterns differ. CrystalDiskMark with a 1 GB test file reported 353 MB/s read and 429 MB/s write in this run, with write coming out higher than read, which is atypical enough to treat as an outlier pending further retesting. ATTO produced stronger peak figures of 860 MB/s read and 570 MB/s write at the top end, which aligns more closely with the best-case behavior seen in sequential-focused tests on multi-drive arrays.

Noise, power draw, and thermal behavior were also measured because they affect rack placement and operating cost. With the fan profile set to auto and drives idle, noise sat around 42 to 44 dBA, dropping to roughly 38 to 40 dBA in the lowest RPM mode. Manually forcing maximum cooling pushed noise to around 56 to 57 dBA, and that level remained dominant even when drive activity increased, suggesting the cooling system prioritizes aggressive airflow when pushed. Power consumption with 4 enterprise HDDs measured roughly 49 to 50 W at idle and 60 to 62 W under activity, while swapping to 4 SATA SSDs reduced that to around 32 W during synchronization, underlining how drive choice can change the overall profile as much as the base platform.

UniFi UNAS Pro 4 Review – Software and Services

The UNAS Pro 4 runs UniFi Drive and is managed through the same style of web interface used across the broader UniFi portfolio, with system status, storage, backups, and user access presented in a single dashboard. For basic NAS use, the core functions are in place: creating storage pools, managing shares, enabling file services, and monitoring drive health. The interface is generally structured around doing common tasks quickly rather than exposing every possible tuning option, which keeps setup approachable but also limits deeper control in areas that some experienced NAS users look for.

File access is centered on SMB and NFS, with browser-based file management available for basic upload, download, and folder navigation. The browser file manager covers the essentials and includes sharing link creation, but it is not positioned as a full productivity layer with advanced file handling or rich collaboration features. Remote access and identity-based access tools are tied into UniFi’s account and identity layer, and while local-only deployment is possible, the most integrated remote workflow is clearly designed around UniFi’s own services rather than third party remote networking tools.

Storage protection features include snapshot support, encrypted volumes, and configurable retention policies, which addresses most common rollback and recovery needs for file storage. Backup tooling covers several targets, including backing up to another UniFi NAS, to SMB targets, and to cloud services such as Google Drive, OneDrive, Dropbox, Amazon S3, Backblaze B2, and Wasabi, with Microsoft 365 backup support also part of the broader UniFi Drive direction. These features reflect the brand’s recent focus on strengthening data protection rather than expanding into application hosting or media server style functionality.

The gaps are consistent with the product’s current scope. There is no iSCSI target support, which limits certain virtualization and block-storage workflows, and there is no container or VM layer for running third party services directly on the NAS. NVMe usage remains limited to caching rather than becoming its own storage pool, which narrows the performance paths available if the goal is to build a small all-flash volume.

Client-side tooling is also still limited compared with platforms that provide a dedicated sync-and-pin application, with access leaning on standard network shares and UniFi’s identity-driven access methods rather than a full drive-style client experience.

UniFi UNAS Pro 4 Review – Conclusion & Verdict

The UNAS Pro 4 is a focused 1U, 4 bay NAS that prioritizes networked file storage and straightforward deployment over broader application support. The hardware choices align with that goal: dual 10Gb SFP+ connectivity, 4 hot swap bays, and optional NVMe caching provide a platform that can deliver strong file transfer rates for a small array, while the ARM-based design keeps the system positioned as an appliance rather than a general-purpose server. Its main compromises are largely structural rather than hidden: fixed bay count with no expansion path, NVMe limited to cache, no USB I/O for local tasks, and a single internal PSU rather than a hot swap redundant design.

At $499, the value case is driven by how much rack-oriented networking is included at a price that undercuts many comparable 1U NAS systems, especially those offering 10Gb as standard. The software is usable for core storage tasks and has clearly improved over the last year in areas like snapshots and backup targets, but it still leaves out features that matter to some buyers, including iSCSI and a fuller client sync experience. For users who want a compact rack NAS primarily for SMB or NFS file storage with modern backup and snapshot features, it fits its role well; for users expecting a broader NAS app ecosystem or more hardware serviceability, the limitations are likely to be decisive. But, as Delboy once said, at this price, “what do you want? Jam on it?”. This system is giving more at this price than anyone else right now and for its limitations, for many these will be paletable in the grand scheme of things. 1U 4Bay rackmounts has always been something that most turnkey NAS brands treat poorly, due to the low saturation point of four SATA drives and why waste more capable hardware on that? In that sense, Ubiquiti is really piling on the hardware here at this price – and I for one applaud this.

You can buy the UniFi UNAS Pro 4 NAS via the link below – doing so will result in a small commission coming to me and Eddie at NASCompares, and allows us to keep doing what we do! 

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Want to follow specific category? Also Read...Gl.iNet Slate 7 Pro Should YouUniFi UNAS 4 vs UGREEN DH4300 UniFi Airwire - REAL WiFi 7 MLUniFi Airwire - REAL WiFi 7 MUniFi UNAS 4 ReviewUniFi UNAS 4 ReviewIs the UniFi Dream Router StilUniFi Dream Router 7 - ONE YEAUniFi UNAS Pro 4 vs Pro vs ProUniFi UNAS Pro 4 vs Pro vs Pro Subscribe You can also follow specific search terms:

This description contains links to Amazon. These links will take you to some of the products mentioned in today's content. As an Amazon Associate, I earn from qualifying purchases. Visit the NASCompares Deal Finder to find the best place to buy this device in your region, based on Service, Support and Reputation - Just Search for your NAS Drive in the Box Below

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If you like this service, please consider supporting us. We use affiliate links on the blog allowing NAScompares information and advice service to be free of charge to you.Anything you purchase on the day you click on our links will generate a small commission which isused to run the website. Here is a link for Amazon and B&H.You can also get me a Ko-fi or old school Paypal. Thanks!To find out more about how to support this advice service check HEREIf you need to fix or configure a NAS, check Fiver Have you thought about helping others with your knowledge? Find Instructions Here  

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Best Cheap NAS of the Year

Cheap NAS hardware in 2025 sits in an awkward middle ground between full DIY servers and polished, premium turnkey appliances, but it is also where many first time buyers start when they want to get away from cloud storage and subscriptions without spending a large amount of money. This article focuses on systems that have been available for under $249, arrive pre built with CPU and memory, and come either with their own NAS style operating system or with enough onboard storage to install one easily. The aim is to show what you realistically get at this price in terms of bays, network speed, scale and software, and where each device draws the line on features, expansion and flexibility so you can decide whether a low cost 2 bay box, an all M.2 cube or a bare board server is the better fit for your first step into local storage.

#1 UGREEN NASync DH2300 – $178 to $209

SPECS: Rockchip RK3576 8 core ARM up to 2.2 GHz – 4 GB LPDDR4X – 2 x 3.5″/2.5″ SATA bays (up to 60 TB total) – 1 x 1 GbE RJ45 – no internal M.2 SSD slots, 32 GB eMMC OS storage.

The UGREEN NASync DH2300 is aimed at users who want the cheapest possible entry to a proper NAS without losing basic RAID and a guided setup experience. Two SATA bays and support for up to 60 TB in RAID 0, RAID 1, JBOD or Basic give enough room for a modest media library, photo archive and PC backups, while UGOS Pro adds mobile apps, 4K HDMI playback, simple remote access and basic snapshot and multi user features in a consumer friendly interface. Power draw is low, thanks to the 8 core ARM SoC and 1 GbE networking, which also keeps noise and heat down compared with larger multi bay units. The key limitation at this price is that you are locked to 2 drive bays, a single 1 GbE port and no internal SSD caching or containers on this model, so long term scale and heavy app use are constrained. Overall it suits buyers who want a cheap, mostly turnkey alternative to cloud storage and USB drives, rather than a platform for heavier virtualization or high speed workloads.

What we said in our October 2025 Review HERE:

The UGREEN DH2300 represents a carefully positioned step in the company’s ongoing effort to make private storage approachable for non-technical users. Its hardware configuration, led by the Rockchip RK3576 processor and 4GB of fixed memory, provides solid baseline performance for a two-bay ARM-powered NAS at this price point. Although its single 1GbE network port may limit throughput for larger file transfers, the system compensates with a highly efficient power profile, quiet operation, and full support for common RAID configurations. The inclusion of a dedicated 32GB eMMC system drive, HDMI 4K60 output, and an NPU capable of AI-based photo indexing places it above most similarly priced entry-level alternatives from QNAP and Synology. However, certain aspects of UGREEN’s marketing—particularly the way the dual quad-core CPU clusters are presented as a single 8-core design—could be clearer. Likewise, the absence of upgradeable memory or faster networking options limits its long-term scalability for users seeking to expand their NAS environment beyond basic media and backup tasks.

From a broader standpoint, the DH2300’s strongest appeal lies in its simplicity and low operational overhead. UGOS Pro, though still developing in maturity, has evolved into a competent, user-friendly platform offering the key features needed for home data management, multimedia access, and scheduled backups. The OS’s stability, combined with efficient hardware and lightweight design, makes this NAS a practical alternative to annual cloud subscriptions for users who simply want local control over their data. It is not a system aimed at enthusiasts or professionals demanding virtual machines, multi-gig networking, or broad third-party OS support, but rather those seeking a self-contained, reliable, and low-maintenance device. Within that niche, the DH2300 delivers strong value and performs consistently well for the intended demographic—serving as an accessible first step into local storage ownership.

Buy the UGREEN DH300 on Amazon @209	Buy the UGREEN DH2300 on UGREEN.COM	Buy the UGREEN DH2300 on B&H
	STORE

SOFTWARE - 7/10

HARDWARE - 8/10

PERFORMANCE - 7/10

PRICE - 10/10

VALUE - 9/10

8.2

PROS

Efficient Rockchip RK3576 processor (dual quad-core ARM design) provides strong performance for a low-power NAS.
Integrated 6 TOPS NPU enables local AI functions such as face, text, and object recognition without cloud reliance.
UGOS Pro offers an intuitive, user-friendly interface with features like RAID management, snapshots, Docker, and backups.
Low noise output (31–45 dBA) and excellent power efficiency (9–13W typical use) suit 24/7 home operation.
Dedicated 32GB eMMC system drive keeps the OS separate from data volumes for better reliability.
HDMI 2.0 4K60 output allows direct media playback and display management.
Competitive pricing around $200 makes it a strong entry-level NAS alternative to subscription cloud storage.

CONS

Single 1GbE LAN port limits transfer speeds and network scalability.
Fixed 4GB memory restricts heavy multitasking or Docker use.
Spending just $100-150 more gets you much, much more capable x86 powered systems

#2 UniFi UNAS 2 – $199

SPECS: Quad core ARM Cortex A55 1.7 GHz – 4 GB RAM – 2 x 3.5″/2.5″ SATA bays – 1 x 2.5 GbE RJ45 with PoE++ – no internal M.2 SSD slots, 1 x USB C 5 Gb/s expansion.

UniFi UNAS 2 targets users already invested in the UniFi ecosystem who want basic network storage and UniFi Drive integration at a low buy in price. Two SATA bays are enough for a mirrored pair of HDDs or SSDs for small site backups, UniFi Protect recordings or general file storage, and the 2.5 GbE plus PoE++ design keeps cabling simple by combining power and data on a single link to an existing UniFi switch. UniFi OS and UniFi Drive provide a simplified management layer for object storage, simple file shares and cloud synced folders, with a small color LCM display giving at a glance system status without needing to log in. The main limitation at this price is that UniFi’s NAS software is still relatively immature, with no native support for third party media servers or advanced NAS apps and no SSD cache tier, so it is best treated as a small, integrated storage node rather than a full featured general purpose NAS. For users who want a cheap box that drops straight into a UniFi rack and handles basic storage quietly and efficiently, it fits that role.

What we said in our September 2025 Review HERE:

The UniFi UNAS 2 is presented as a compact and affordable two-bay NAS designed for straightforward storage and backup tasks, particularly within environments already using UniFi networking hardware. Its PoE++ design is distinctive, allowing both power and connectivity to be delivered over a single cable, simplifying installation where compatible PoE switches are available. This approach aligns with UniFi’s strategy of reducing external hardware requirements, though it also means that a failed port or damaged cable will disable both power and network access simultaneously. For non-UniFi users, the reliance on PoE++ creates an additional barrier, as adoption requires either compatible infrastructure or the included 60W injector. The shared dual-drive tray, lack of hot-swap support, and absence of expansion options further reinforce the system’s role as a fixed-capacity solution, best suited to smaller or secondary deployments. With a maximum drive budget of 52W and overall consumption limited to 60W, the device is power-efficient, but its architecture prioritises simplicity over flexibility.

On the software side, the UNAS 2 provides a user-friendly interface with access to snapshots, RAID configuration, system backups, and integration into the UniFi identity ecosystem. However, the limited hardware constrains the range of features available, and certain tools seen in UniFi’s larger NAS models are absent, such as encrypted volumes or extended network protocol support. Performance testing showed sequential read speeds up to 260 MB/s and write speeds around 160–180 MB/s, which make full use of the 2.5 GbE interface but leave little headroom for more demanding tasks. Thermals during extended use regularly pushed the CPU into the high 70s Celsius, and although fan management can be adjusted, sustained workloads highlight the limits of the system’s cooling design. The software’s omission of iSCSI and advanced backup filters also narrows its role, making it less competitive against established vendors in professional or virtualisation scenarios.

Ultimately, the UNAS 2 is most appropriately positioned as an edge or secondary NAS, providing basic networked storage for existing UniFi users who value plug-and-play deployment and ecosystem consistency, but it is not equipped to serve as a primary system in larger or more demanding environments (VMs, Containers, etc). A great and unique NAS that will nbe at it’s most appealing if you are already invested in the UniFi ecosystem, or have a NAS already that needs a network backup.

BUILD QUALITY - 9/10

HARDWARE - 7/10

PERFORMANCE - 7/10

PRICE - 10/10

VALUE - 9/10

8.4

PROS

Benefits from almost a year of development of the UNAS Pro by UniFi, resulting in a much more complete solution in both hardware and software
Exceptionally appealing price point
Extremely low impact (power use, noise level, physical scale all great)
Introduction of USB C 5Gb/s Connectivity is very welcome
Supports complete network/local access if preferred, as well as full remote connectivity with the UI.com account and site manager services
Wide Hard Drives and SATA SSD Support (UniFi branded drives and those from 3rd parties such as Seagate Ironwolf, WD Red and Toshiba N300)
Comprehensive network storage software in UniFi NAS OS and Drive.
Latest OS updates have included fan control, flexible RAID configurations, encrypted drive creation, customizable snapshots, more backup client choices/targets
\'Single Pane of Glass\' management and monitoring screen is very well presented!
One of the fastest to deploy turnkey NAS solutions I have ever personally used!

CONS

Single network port, though not a dealbreaker (as this is still just 2x SATA throughput), is not great in terms of a network failover or in deployment of SATA SSDs
Choice of PoE deployment unusual and limits some deployments
USB C connectivity does not support network adapters, NAS expansions or 3rd party UPS devices
Very modest base hardware, but understandable relative to the price
HDD injection is very unique, but it prevents hot swapping
Still a lack of client applications native to the NAS services for Windows, Mac, Android and Linux

#3 Beelink ME Mini – $209 to $279

SPECS: Intel Processor N150 quad core up to 3.6 GHz – 12 GB or 16 GB LPDDR5 – 0 x SATA bays / 6 x M.2 2280 NVMe slots (5 x PCIe 3.0 x1, 1 x PCIe 3.0 x2, up to 24 TB) – 2 x 2.5 GbE RJ45 – 64 GB eMMC plus up to 2 TB NVMe preinstalled.

The Beelink ME Mini trades spinning disks for six M.2 slots in a 99 mm cube, making it one of the most storage dense budget options for users who already have or plan to buy multiple NVMe SSDs. At this price bracket it offers far more raw flash capacity potential than traditional 2 bay HDD NAS units, and the dual 2.5 GbE ports allow the box to push enough throughput for small media servers, backup targets and home lab services once an appropriate OS such as TrueNAS, Proxmox, Linux or a lightweight NAS distribution is installed. The integrated PSU, WiFi 6 and compact chimney style cooling keep the physical footprint small while still supporting continuous operation as a low to moderate power SSD based server. The main limitation is that PCIe lane allocation and the N150 CPU cap per drive performance and the unit can run hot under sustained load, so you do not get high end NVMe speeds from each slot and there is no turnkey NAS OS included. It is therefore best suited to buyers who value maximum flash capacity per dollar in a very small chassis and are comfortable treating it as a DIY NAS platform rather than a plug-and-play appliance.

What we said in our June ’25 Review HERE:

The Beelink ME Mini NAS delivers an uncommon blend of size, functionality, and efficiency in a market segment often dominated by larger, louder, and less integrated alternatives. It is not designed to compete with traditional enterprise-grade NAS devices or modular, scalable solutions for prosumers. Instead, its strengths lie in targeting the needs of home users who want a quiet, energy-efficient storage solution that is easy to deploy, aesthetically unobtrusive, and capable of handling daily tasks such as media streaming, file backup, or soft routing. The inclusion of six M.2 NVMe SSD slots—paired with a Gen 3 x2 system slot—offers a rare level of expansion in such a small enclosure. The integration of an internal PSU, silent fan-assisted cooling, and a surprisingly effective thermal design are thoughtful touches that differentiate it from the majority of DIY NAS mini PCs.

That said, it is not without limitations. The memory is non-upgradable, thermal accumulation at the base suggests room for improvement, and bandwidth ceilings imposed by Gen 3 x1 lanes will constrain users who demand high parallel throughput. Still, for its price point—particularly when pre-order discounts are applied—the ME Mini offers significant value, especially when compared to ARM-based NAS solutions with similar or lower specifications. With bundled Crucial SSD options and support for a wide range of NAS operating systems, it positions itself as a ready-to-go platform for tech-savvy users wanting to avoid the assembly of a fully DIY system. Overall, while not a product for every use case, the Beelink ME Mini succeeds in its aim to be a compact, stylish, and capable home NAS.

BUILD QUALITY - 9/10

HARDWARE - 8/10

PERFORMANCE - 8/10

PRICE - 9/10

VALUE - 10/10

8.8

PROS

Compact cube design (99x99x99mm) ideal for discreet home deployment
Supports up to 6x M.2 NVMe SSDs with total capacity up to 24TB
Integrated PSU eliminates bulky external power adapters
Dual 2.5GbE LAN ports with link aggregation support
Wi-Fi 6 and UnRAID7 Support means not limited to 2x2.5G
Low power consumption (as low as 6.9W idle, ~30W peak with full load)
Silent fan and effective internal thermal management via large heatsink
Includes Crucial-branded SSDs in pre-configured options for reliability

CONS

Five of the six SSD slots are limited to PCIe Gen 3 x1 bandwidth
Memory is soldered and non-upgradable
Not 10GbE Upgradable (maybe m.2 adapter - messy)
Bottom panel retains heat due to lack of active ventilation

#4 Xyber Hydra N150 – around $208 to $249

SPECS: Intel Processor N150 quad core up to 3.6 GHz – 16 GB LPDDR5 – 0 x SATA bays / 4 x M.2 2280 NVMe PCIe 3.0 x2 slots – 2 x 2.5 GbE RJ45 plus WiFi 6 – 64 GB eMMC with Ubuntu preinstalled and 512 GB NVMe SSD included on many models.

The Xyber Hydra N150 aims at budget buyers who want an NVMe based NAS that is closer to ready out of the box, combining 4 PCIe 3.0 x2 M.2 bays with 16 GB of memory, preloaded Ubuntu and often a preinstalled 512 GB NVMe system drive. That combination makes it straightforward to stand up containers, Docker stacks or lightweight NAS services immediately, then expand capacity by populating the remaining M.2 slots with SSDs as budget allows. Dual 2.5 GbE ports with link aggregation give enough network bandwidth to take advantage of parallel NVMe arrays for home lab or small office workloads, and the revised metal baseplate plus dual fan cooling run cooler than earlier G9 derived designs while still keeping power use modest. The main limitation at this price is that RAM is soldered and each M.2 slot is only x2, so neither memory capacity nor per drive bandwidth can be increased later, and some tuning of fan curves is needed to keep thermals in check under heavy use. For users who want an inexpensive, compact NVMe appliance with more polish than bare boards but are comfortable managing their own OS and RAID layout, it offers a pragmatic middle ground.

What we said in our July ’25 Review HERE:

The Xyber Hydra N150 NAS represents a deliberate and measured evolution of the budget-friendly compact NAS formula, clearly designed to resolve key weaknesses of similar products like the GMKTec G9 without altering the fundamental architecture. Its use of a thicker, thermally conductive metal base plate provides demonstrable improvement in heat dissipation compared to the plastic underside of the G9, a difference borne out in extended load testing where temperatures stabilized more quickly and stayed lower when fan profiles were adjusted. The pre-installed 64GB eMMC module running Ubuntu out of the box eliminates the initial configuration barrier often faced by novice users, while still allowing more experienced users to easily replace it with their OS of choice, such as ZimaOS or TrueNAS. The inclusion of a 512GB NVMe SSD in the primary M.2 bay adds immediate storage capacity without requiring an upfront investment in additional drives, an uncommon but practical feature at this price point.

Internally, the decision to provide 16GB of fixed LPDDR5 memory — 4GB more than its nearest comparable competitor — gives the Hydra slightly more headroom for memory-intensive tasks, such as running lightweight container workloads or maintaining a larger metadata cache for media streaming applications. While the memory remains non-upgradable, the choice of capacity is a reasonable compromise given the constraints of the Intel N150 platform and the system’s focus on cost efficiency. The integrated Wi-Fi 6 module, with dual antennas and full UnRAID compatibility, is another meaningful addition, enabling wireless deployments where cabling is impractical and expanding the deployment scenarios for home and small office users. These subtle but important upgrades make the Hydra feel more complete out of the box, catering to a broader range of use cases with fewer compromises.

That said, the Hydra still shares many of the inherent trade-offs of its class. The N150 processor is adequate for modest workloads, but becomes saturated under sustained high parallel usage, especially when all four M.2 slots are simultaneously active and the CPU nears 100% utilization. The PCIe lane limitations of the platform, with each M.2 slot limited to Gen3 x2 speeds, restrict the aggregate performance potential of RAID arrays or concurrent high-bandwidth operations. Similarly, the continued reliance on dual 2.5GbE ports limits maximum external throughput despite the internal SSD bandwidth being capable of more, and although M.2-to-10GbE adapters remain an option, they come at the cost of sacrificing one storage slot. BIOS-level adjustments are also required to extract the best thermal and fan performance under heavy use, something that more advanced users will appreciate but could frustrate beginners.

Overall, at its introductory price of $218.99, the Xyber Hydra N150 achieves a strong balance of value, practicality, and refinement in the entry-level NAS segment. The thoughtful inclusion of extras — the 64GB bootable eMMC, 512GB SSD, improved cooling, and additional memory — make it feel more turnkey than competing models, while still leaving room for advanced customization. It’s a sensible option for users seeking a compact and efficient NAS for personal cloud storage, light virtualization, or as a dedicated media server, provided expectations around CPU and networking throughput are kept realistic. For its target audience, the Hydra is a compelling and notably improved choice that addresses many of the criticisms of earlier designs without abandoning the affordability that defines this class of devices.

BUILD QUALITY - 7/10

HARDWARE - 7/10

PERFORMANCE - 8/10

PRICE - 9/10

VALUE - 9/10

8.0

PROS

Improved thermal design with a thicker metal base plate for better heat dissipation compared to similar models.
Includes 64GB eMMC storage preloaded with Ubuntu OS for out-of-the-box usability.
Ships with a 512GB M.2 NVMe SSD in Bay 1, providing immediate usable storage.
Fixed 16GB LPDDR5 memory — higher than comparable devices — supports more concurrent tasks.
Wi-Fi 6 module with dual antennas, compatible with UnRAID, enabling flexible wireless deployment.
Four M.2 NVMe bays, each supporting PCIe Gen3 x2, allowing up to 4 SSDs for flash storage arrays.
Dual 2.5GbE ports with link aggregation support for improved network throughput.
Compact, quiet, and energy-efficient form factor suitable for home and small office environments.

CONS

Memory is soldered and non-upgradable, limiting future scalability.
PCIe Gen3 x2 and CPU bandwidth constraints limit maximum aggregate performance under full load.
Fans require BIOS adjustments for optimal thermal control during heavy sustained workloads.

#5 ZimaBoard 2 1664 – $239 to $349

SPECS: Intel Processor N150 quad core up to 3.6 GHz – 16 GB LPDDR5X – 2 x SATA 3.0 ports (via cables to external drives) – 2 x 2.5 GbE RJ45 – 1 x PCIe 3.0 x4 slot, 64 GB eMMC OS storage.

ZimaBoard 2 1664 is a single board x86 server positioned for budget home lab builders who want more flexibility than a fixed enclosure can offer while staying under typical entry level NAS pricing. The board exposes 2 SATA ports with power for attaching HDDs or SSDs in whatever chassis or external mounting the user prefers, alongside dual 2.5 GbE, USB 3, Mini DisplayPort and a full PCIe 3.0 x4 slot that can host extra NICs, HBAs or NVMe adaptors to scale storage and connectivity over time. ZimaOS comes preinstalled and supports alternative systems such as CasaOS, Linux and Windows, so it can act as a low cost base for self hosted services, small virtualisation labs or custom NAS builds using external drive cages or repurposed cases. The main limitation is that there is no built in drive bay system or enclosure, so buyers must factor in the cost and effort of adding their own storage chassis, cabling and cooling if they want something as neat as a traditional NAS. For those willing to do that, it offers one of the most flexible and expandable x86 platforms in the budget bracket, with enough CPU and RAM headroom to grow beyond simple file serving as needs evolve.

What we said in our April ’25 Review HERE:

The ZimaBoard 2 is a competent and thoughtfully assembled single-board server that builds meaningfully on IceWhale’s earlier efforts, especially the original ZimaBoard and the ZimaBlade. Its design clearly targets users who want more flexibility and performance than traditional ARM-based boards can offer, but who also value power efficiency, silence, and a small footprint. The use of an Intel N150 CPU, 8GB of LPDDR5x memory, dual 2.5GbE ports, and a PCIe 3.0 x4 slot makes it viable for a variety of home server roles—from basic NAS and smart home coordination to lightweight container hosting and local media streaming. Features like onboard SATA, USB 3.1, and a DisplayPort connection further add to its utility. However, there are hardware limitations that may affect long-term suitability for advanced deployments. The soldered RAM cannot be upgraded, and the internal eMMC storage, while useful for initial setup, is too slow for OS-level responsiveness in more demanding use cases. Passive cooling, while appreciated for silence, also imposes some thermal limitations depending on the deployment environment.

On the software side, ZimaOS offers a decent out-of-the-box experience that caters to users with minimal technical background. It handles core tasks like application deployment, file sharing, and system monitoring without requiring advanced configuration, and its Docker-based App Store simplifies access to popular tools. For more experienced users, the system supports third-party OS installation, which is likely how many will ultimately use the ZimaBoard 2. Still, as a bundled solution, ZimaOS has matured significantly and now presents itself as a lightweight, capable, and non-intrusive platform for those who prefer to get started immediately. In the broader context of DIY server hardware, ZimaBoard 2 occupies a middle ground: more powerful and modular than Raspberry Pi-class systems, yet more constrained than full x86 mini PCs or enthusiast-grade NAS hardware. For those who understand and accept these trade-offs, and are willing to plan around its limitations, the ZimaBoard 2 offers a reliable and flexible foundation for compact, energy-efficient computing at the edge.

BUILD QUALITY - 10/10

HARDWARE - 8/10

PERFORMANCE - 8/10

PRICE - 9/10

VALUE - 10/10

9.0

PROS

x86 Architecture – Compatible with a wide range of operating systems including ZimaOS, Unraid, TrueNAS SCALE, and Proxmox.
Dual 2.5GbE LAN Ports – Offers strong networking capabilities for multi-service workloads and gateway setups.
PCIe 3.0 x4 Slot – Enables high-speed expansion for 10GbE NICs, NVMe storage, or combo cards.
Fanless, Silent Operation – Completely passively cooled, ideal for home or quiet office environments.
Compact and Durable Build – Small footprint with an all-metal chassis that doubles as a heatsink.
ZimaOS Included – User-friendly OS with a Docker-based App Store and basic VM tools, ready out of the box.
Flexible Storage Options – Dual SATA ports plus USB 3.1 support for connecting SSDs, HDDs, or external drives.
Low Power Consumption – Efficient 6W CPU with ~10W idle and ~40W max under heavy load scenarios.

CONS

Non-Upgradable RAM – 8GB of soldered LPDDR5x limits long-term scalability for memory-intensive tasks.
Slow/Small Default Internal Storage – 32GB eMMC is convenient but underperforms for OS-level responsiveness or high I/O workloads.
Thermal Headroom is Limited – Passive cooling alone may not be sufficient in closed environments or under sustained load without added airflow.
Not Launching on Traditional Retail, but instead on Crowdfunding.

Taken together, the UGREEN DH2300, UniFi UNAS 2, Beelink ME Mini, Xyber Hydra N150 and ZimaBoard 2 show the different ways vendors are trying to hit the sub 250 dollar bracket without stripping out the core value of a NAS. Some focus on simplicity and bundled software with limited scale, others trade turnkey polish for dense NVMe storage or flexible bare board layouts that assume you are willing to do more of the setup yourself. None of these devices removes the usual compromises around bays, performance, noise or software maturity at this price level, but each offers a clear path away from pure cloud dependence and USB drives. The practical decision is less about which is objectively “best” and more about whether you want a small 2 bay appliance, a compact all flash cube or a configurable single board system that can grow with your skills and requirements over time.

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