New UniFi UDM Beast, Enterprise FG Core, Enterprise 100G and Enterprise S Revealed

At NAB 2026 in Las Vegas, Ubiquiti Inc. showcased a number of rackmount UniFi devices that have not yet been formally announced or released. These systems were presented alongside existing products, making it necessary to distinguish between current hardware and what appears to be forthcoming or experimental equipment. The devices observed represent a noticeable increase in port density, throughput capability, and overall positioning compared to the current UniFi lineup.

Four specific devices stand out from this showcase: the UniFi Dream Machine Beast, the Enterprise Fortress Gateway Core, the Enterprise 100G switch, and the Enterprise S PoE switch. Based on available observations and supporting information, these products appear to form a cohesive expansion of the UniFi ecosystem into higher-performance enterprise and datacenter environments. However, specifications remain unconfirmed and should be considered provisional until officially published.

UniFi Dream Machine BEAST – A 25GbE UDM!

The UniFi Dream Machine BEAST appears to be a significant evolution of the existing Dream Machine platform, extending beyond the capabilities of current models such as the UniFi Dream Machine Pro Max. Based on observed hardware, this device integrates substantially higher port density, particularly in 10G and 25G connectivity, while also introducing onboard storage via dual SATA bays. This suggests a continued emphasis on combining routing, switching, and application hosting within a single appliance, including UniFi OS services such as Protect and other controller-based functions.

Compared to previous Dream Machine models, the BEAST shifts closer toward an enterprise-focused deployment, particularly in environments requiring direct multi-gigabit connectivity without reliance on additional aggregation switches. However, key system details such as CPU architecture, memory capacity, and throughput performance remain unconfirmed. The absence of official documentation indicates that this device is still in a pre-release or prototype stage, and its final positioning within the UniFi portfolio is not yet defined.

UniFi Enterprise Fortress Gateway Core – Truly Enterprise

The UniFi Enterprise Fortress Gateway Core appears to extend the capabilities of the existing UniFi Enterprise Fortress Gateway into a significantly higher performance tier. While the current Enterprise Fortress Gateway is already positioned as a high-end UniFi routing platform, the Core variant introduces substantially greater port density and bandwidth, including support for 100G connectivity. This suggests a shift from traditional edge gateway roles toward deployment in core or aggregation layers within larger enterprise or datacenter environments.

The observed hardware indicates a design focused on high-throughput routing and multi-layer network integration, with a combination of 10G copper, 25G SFP28, and 100G QSFP28 interfaces. This represents a notable departure from existing UniFi gateway designs, which typically rely on lower port counts and external switching for aggregation. As with the Dream Machine BEAST, critical specifications such as processing architecture, memory configuration, and pricing remain undisclosed, reinforcing the likelihood that this device is still in a pre-release stage.

UniFi Enterprise 100G – Next-Level Connections

The UniFi Enterprise 100G appears to be a high-density aggregation or spine switch designed for environments requiring large-scale bandwidth distribution. Its configuration, centered around 25G access ports and 100G uplinks, aligns with common leaf-spine architectures used in enterprise and datacenter networks. Within the current UniFi portfolio, the closest comparison would be aggregation-focused switches such as the UniFi Switch Enterprise Aggregation, although the observed specifications of this device significantly exceed existing models in both port count and total throughput capacity.

This device is likely intended for deployment deeper within network infrastructure rather than at the edge, acting as a central switching layer connecting multiple high-speed access or distribution switches. The combination of 48 × 25G and 6 × 100G ports suggests a focus on scalability and backbone connectivity rather than end-device access. As with the other devices observed, no official documentation, pricing, or detailed hardware specifications have been released, and its final role within the UniFi ecosystem remains unconfirmed.

UniFi Enterprise S – PoE Powerhouse

The UniFi Enterprise S appears to be a high-density access switch focused on multi-gigabit connectivity and high-power PoE delivery. Its configuration combines a large number of 2.5G and 10G copper ports, all supporting PoE+++, alongside 25G uplinks for upstream connectivity. Within the current UniFi lineup, there is no direct equivalent, although products such as the UniFi Switch Pro XG 48 PoE operate in a similar space with lower overall port density and more limited PoE capability. The Enterprise S extends this concept by standardising high-power PoE across all access ports.

This design suggests deployment in environments with dense endpoint requirements, including wireless access points, cameras, and AV equipment, where both bandwidth and power delivery are critical. The combination of 2.5G and 10G ports allows for flexibility across different device classes, while the inclusion of 25G uplinks supports integration into higher-speed aggregation layers. As with the other devices observed, there is no confirmed information regarding total power budget, internal hardware, or release timeline, and the device should be considered pre-release.

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The four devices observed at NAB 2026 indicate a broader shift in the UniFi portfolio toward higher-performance networking tiers. Collectively, they introduce increased port density, support for 25G and 100G connectivity, and in some cases, significantly expanded power delivery capabilities. Compared to currently available products such as the UniFi Enterprise Fortress Gateway and UniFi Dream Machine Pro Max, these systems represent a move beyond traditional edge and SMB-focused deployments into roles typically associated with enterprise core, aggregation, and high-density access layers.

However, all four devices remain unannounced and lack confirmed specifications, pricing, and release timelines. As a result, their final positioning and availability cannot be determined with certainty. While the observed hardware suggests a structured expansion into a more complete end-to-end networking stack, any conclusions remain provisional until formal details are released by Ubiquiti Inc..

 

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UGREEN DH4300 PLUS vs UniFi UNAS 4 – Which Should You Buy?

The UniFi UNAS 4 and the UGREEN DH4300 Plus are being compared because they currently occupy a very similar part of the 4-bay NAS market, with both systems targeting buyers who want a relatively affordable turnkey storage solution with 2.5GbE connectivity, modern desktop design, and a lower entry price than many traditional NAS brands. On paper, they are close enough in price to be direct alternatives, but in practice they approach NAS deployment very differently. The UniFi UNAS 4 is built around tight integration with the wider UniFi ecosystem and focuses primarily on straightforward storage, backup, and remote file access, whereas the UGREEN DH4300 Plus is designed as a broader standalone NAS platform with more memory, a more powerful ARM processor, HDMI output, and a wider range of applications and services. That makes this comparison relevant not just because of the hardware and price overlap, but because each system reflects a different idea of what an entry to mid-range 4-bay NAS should be in 2026.

UniFi vs UGREEN NAS – Brand vs Brand

Before I dig into which of the DH4300 or UNAS 4 is best for you, it is worth highlighting again that these are two comparatively new players in the NAS scene (compared with long time multi-decade vetrans such as Synology, QNAP, Asustor and Terramaster), so let’s talk about their priorities and focus at a brand level. Both UGREEN and UniFi have entered the NAS sector from distinct starting points and continue to move in different directions, each targeting a particular type of user. UniFi’s UNAS series delivers consistency, predictable performance, and dependable integration with the broader UniFi ecosystem. Its software is stable, lightweight, and well-suited to users who prioritize straightforward storage management, reliable data handling, and unified control across routers, switches, and surveillance systems. While the hardware is limited to fixed ARM configurations and non-expandable memory, it is efficient, quiet, and designed for continuous operation with minimal maintenance. For organizations already invested in UniFi infrastructure, the UNAS systems provide a logical expansion that keeps management centralized and operational risk low. However, their value depends heavily on ecosystem synergy; outside of that environment, the systems remain competent but relatively inflexible standalone NAS options.

UGREEN’s NASync platform, on the other hand, appeals to users seeking broader performance capability and independence. Its x86-based models, upgradable memory, and open software environment allow it to serve as a hybrid between NAS and compact server, capable of running applications, containers, and virtual machines alongside storage tasks. The design language is more suited to individual or small business use than datacenter deployment, but the hardware range—from ARM to Core i5—covers a far wider performance spectrum than UniFi’s. Software maturity continues to evolve quickly, with new features added frequently, and the systems provide extensive compatibility with third-party clients and backup services. The trade-off is that long-term reliability and enterprise-level security validation are still developing.

Ultimately, UniFi NAS suits users who already rely on UniFi’s networking ecosystem and value simplicity, predictability, and centralized management, while UGREEN NAS caters to those prioritizing flexibility, compute power, and open software capability. Both brands have lowered the entry barrier into reliable NAS ownership, but they embody opposing philosophies: UniFi focuses on integration and control, whereas UGREEN emphasizes capability and independence.

Why Buy UniFi NAS?

Why Buy UGREEN NAS?

Ecosystem Integration: Seamlessly integrates with UniFi Network, Protect, and Access systems, allowing unified management through a single controller interface. Centralized Management: Designed for administrators managing multiple UniFi sites or devices, providing consistent firmware, remote access, and monitoring from one dashboard. Reliable, Efficient Design: ARM-based architecture ensures low power draw, cool operation, and stable long-term performance with minimal maintenance. Enterprise-Grade Networking: Equipped with up to dual 10G SFP+ and 10GBase-T ports, plus USP-RPS redundancy for professional deployments. Proven Security Framework: Benefits from Ubiquiti’s mature network security infrastructure, signed firmware updates, and NDAA-compliant hardware.

Superior Hardware Performance: Offers a full range from ARM to Intel Core i5 CPUs, with upgradable RAM, NVMe storage pools, and optional PCIe expansion. Versatile Software (UGOS Pro): Supports Docker, virtual machines, AI photo indexing, and multi-platform backups out of the box. All-in-One Standalone System: Functions independently without relying on an external ecosystem, ideal for users wanting a complete server in one unit. Advanced Connectivity: Includes 2.5 GbE and 10 GbE networking, USB 4/Thunderbolt 4, and support for direct-attached workflows like video editing or large-file transfer. Rapid Development and Updates: Frequent firmware releases continually add new features, broader hardware support, and improved backup and security options.

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UGREEN DH4300 vs UniFi UNAS 4 – Design and Storage

From a physical design perspective, these 2 NAS systems take very different approaches. The UniFi UNAS 4 has a taller, narrower chassis with a more vertical layout, while the UGREEN DH4300 Plus uses a more cubic desktop design that will look more familiar to buyers coming from Synology, QNAP, or Asustor hardware. The UniFi system is also available in black or white, which gives it a more deliberate visual identity within the wider UniFi product range, whereas the UGREEN keeps to a more conventional single-finish enclosure. In both cases, the chassis material is primarily plastic, so neither is especially premium in material terms, but each is clearly trying to prioritize compactness and low manufacturing cost rather than metal construction.

The drive arrangement is also notably different. The UniFi UNAS 4 places its 4 SATA bays in the base of the chassis, with the drives inserted from underneath, while the UGREEN DH4300 Plus uses a top-loaded vertical bay arrangement hidden under a removable outer shell. Neither system uses a particularly enterprise-focused tray design, and neither is really built around frequent hot-swap use in the same way as more expensive rackmount or prosumer NAS systems. That said, the UniFi trays are easier to describe as straightforward click-in drive carriers, while the UGREEN trays feel more budget-oriented in construction and do not leave the same impression of robustness as more established NAS brands.

In storage flexibility, the UniFi has the more ambitious configuration. Alongside its 4 SATA bays, it also includes 2 dedicated M.2 NVMe slots for SSD cache. That gives it an advantage in hybrid storage architecture, since the hard drives can be used for capacity while the NVMe media handles read and write cache duties. The UGREEN DH4300 Plus does not include M.2 storage slots, so any SSD deployment has to consume one or more of the main SATA bays, which reduces total storage capacity. At the same time, UniFi currently limits those NVMe bays to cache use rather than general storage pools, so the practical advantage is still narrower than the raw hardware layout suggests.

The 2 brands also differ in RAID and storage management philosophy. The UGREEN supports a broader list of RAID modes, including JBOD, Basic, RAID 0, RAID 1, RAID 5, RAID 6, and RAID 10, which gives it more deployment flexibility for different user priorities around performance, redundancy, or simple linear storage. The UniFi platform supports RAID 5, RAID 6, and RAID 10, but its overall storage structure is more controlled and less flexible, with a stronger focus on a simplified single storage pool approach. For buyers who want fewer decisions and a cleaner setup process, that may be acceptable, but for users who want more granular control over how storage is arranged, the UGREEN is less restrictive.

In pure storage potential, the UGREEN is also easier to quantify because it officially supports up to 128TB across 4 bays using 32TB drives, whereas UniFi focuses more on supported drive compatibility and cache pairing than on headline raw capacity figures. The UniFi does have the practical advantage of SSD caching built in, which can improve responsiveness in repeated access and write-heavy workloads, but the UGREEN has the simpler storage proposition overall and does not tie part of its internal design to optional accessories such as UniFi’s separate M.2 tray approach. As a result, the UniFi has the more distinctive and technically layered storage design, while the UGREEN has the more conventional and broadly flexible one.

UniFi UNAS4 vs UGREEN DH 4300 – Internal Hardware & Connections

Internally, the UGREEN DH4300 Plus has the stronger hardware specification. It uses an 8-core Rockchip ARM processor based on Cortex-A76 and Cortex-A55 cores running at up to 2.0GHz, alongside 8GB of LPDDR4X memory and 32GB of eMMC for the system. By comparison, the UniFi UNAS 4 uses a quad-core ARM Cortex-A55 processor at 1.7GHz with 4GB of memory. Both systems are clearly built around low-power ARM architecture rather than x86 processing, but the UGREEN has the more capable platform on paper and offers more headroom for multitasking, background services, and broader software functionality.

The UniFi system does, however, counter with a more unusual internal layout. In addition to its 4 SATA bays, it includes 2 M.2 NVMe slots dedicated to SSD cache, which gives it a storage acceleration feature that the UGREEN does not match natively. For users dealing with repeated file access, background synchronization, or burst-heavy write activity, that cache support has practical value. The UGREEN relies entirely on its 4 SATA bays for storage media, so although its CPU and memory are stronger, its internal storage architecture is less advanced in terms of tiered storage.

External connectivity is broader on the UGREEN. It includes 1x 2.5GbE LAN port, HDMI output at up to 4K 60Hz, 1x front USB 3.2 Gen 1 port at 5Gb/s, and 2 additional USB-A 5Gb/s ports. The UniFi UNAS 4 is much more limited, offering 1x 2.5GbE RJ45 port and 1x 5Gb/s USB-C port. This narrower I/O profile reflects the fact that UniFi has positioned the UNAS 4 as a focused network storage appliance rather than a multi-role NAS for media output, peripheral attachment, or application expansion. In direct hardware terms, the UGREEN is better equipped for users who expect more than basic file serving.

Power and deployment also separate these 2 systems. The UniFi UNAS 4 supports PoE+++ and includes a 90W PoE adapter, which allows both power and network connectivity over a single cable in supported environments. That is unusual in this part of the NAS market and makes it particularly relevant for users already invested in UniFi switching infrastructure or those deploying hardware in locations where simplified cabling matters. The UGREEN uses a more conventional external power arrangement, which is less distinctive but also less dependent on network infrastructure choices. Therefore, the UGREEN has the stronger internal compute hardware and broader physical connectivity, while the UniFi has the more specialized deployment advantage.

UGREEN DH4300 vs UniFi UNAS 4 – Software & Services

The biggest difference between these 2 NAS systems is not the chassis or the processor, but the software scope. The UniFi UNAS 4 runs UniFi Drive and is clearly built around a narrower storage-first brief, with support for SMB, NFS, snapshots, file encryption, Time Machine, share links, user groups, remote backup, cloud backup targets, and client apps. It covers the main NAS fundamentals expected by home users and small offices, but it does so within a more controlled environment that places simplicity and consistency ahead of feature breadth. The UGREEN DH4300 Plus, running UGOS Pro, aims much wider and includes not only file serving and backup tools, but also multimedia applications, container support, HDMI-based media playback, AI-assisted photo features, and broader service depth overall.

For pure storage management, UniFi Drive is cleaner and more focused, particularly for users who want the NAS to act primarily as private cloud storage, backup target, and centralized file repository. Its interface is built to align with the broader UniFi platform, and that gives it an advantage for users already running UniFi networking equipment and remote management tools. However, that same focus also means the UNAS 4 is less flexible as a general-purpose NAS. The UGREEN platform does not have the same ecosystem tie-in, but it operates more independently and gives the user more scope to use the system for different workloads beyond file storage.

Application support is where the gap becomes more obvious. The UGREEN DH4300 Plus supports Docker and has a noticeably broader service layer for media, backup, and user applications. That creates options for running third-party software, home media tools, and more customized services that simply are not part of the UniFi approach. The UniFi UNAS 4 does not currently try to compete in that area and instead presents itself as a dedicated NAS platform rather than an application host. For some users that will be a limitation, while for others it will be a benefit, because it reduces complexity and keeps the system centered on storage tasks rather than mixed workload experimentation.

In practical terms, the software decision comes down to whether the buyer values depth or focus. The UGREEN DH4300 Plus offers the broader NAS software experience and is better suited to users who want more features, more applications, and more ways to extend the system over time. The UniFi UNAS 4 offers the more controlled and storage-specific platform, with the clearest advantage appearing when it is deployed inside an existing UniFi environment. As a result, the UGREEN software stack is more versatile, while the UniFi software stack is more specialized.

UniFi UNAS 4 vs UGREEN DH4300 NAS – Conclusion & Verdict

Taken as a whole, these 2 systems are aimed at a similar buyer in price terms, but they are not trying to solve the same problem in the same way. The UniFi UNAS 4 is a more specialized NAS that focuses on storage, backup, remote access, and integration within the UniFi ecosystem. The UGREEN DH4300 Plus is a broader standalone NAS that gives the user more hardware resources, more software flexibility, and a wider overall role in the network. That difference matters more than the relatively small gap in price, because in day to day use they will appeal to different priorities. The UniFi UNAS 4 makes more sense for buyers who already use UniFi switches, gateways, and management tools, or for those who specifically want a NAS that stays focused on file storage instead of trying to become a media server or container host. Its built in NVMe cache support and PoE+++ deployment give it some useful differentiators, and its simpler software scope will suit users who want a more controlled experience. However, outside of the UniFi ecosystem, some of its strengths become less important, while its limitations in application support, connectivity, and hardware power become harder to ignore.

The UGREEN DH4300 Plus is the better fit for users who want a more traditional all-round NAS. It has the stronger CPU, more memory, broader external connectivity, more RAID options, HDMI output, Docker support, and a software platform with more room to scale into multimedia, backup variety, and third party services. It is the more capable choice for mixed home and small business use, particularly for buyers who are not tied to any specific network brand and want their NAS to handle more than just centralized storage. It is also the easier system to recommend to users comparing it against other established 4-bay NAS platforms in the same price bracket. So, in direct usage terms, the UniFi UNAS 4 is better for UniFi-centric deployments, cleaner storage-first use, and buyers who value NVMe caching and PoE-based installation. The UGREEN DH4300 Plus is better for users who want stronger hardware, more software features, better connectivity, and a wider long term usage profile. If the question is which is the better pure value NAS for the largest number of users, the UGREEN DH4300 Plus is the stronger overall option. If the question is which fits better into a UniFi-led network and a simpler storage-focused role, the UniFi UNAS 4 is the more appropriate choice.

Buy the UGREEN DH4300 on Amazon @399	Buy the UniFi UNAS 4 on The UniFi Store for $379

 

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Need Advice on Data Storage from an Expert?

Finally, for free advice about your setup, just leave a message in the comments below here at NASCompares.com and we will get back to you. Need Help? Where possible (and where appropriate) please provide as much information about your requirements, as then I can arrange the best answer and solution to your needs. Do not worry about your e-mail address being required, it will NOT be used in a mailing list and will NOT be used in any way other than to respond to your enquiry. [contact-form-7] TRY CHAT Terms and Conditions   Alternatively, why not ask me on the ASK NASCompares forum, by clicking the button below. This is a community hub that serves as a place that I can answer your question, chew the fat, share new release information and even get corrections posted. I will always get around to answering ALL queries, but as a one-man operation, I cannot promise speed! So by sharing your query in the ASK NASCompares section below, you can get a better range of solutions and suggestions, alongside my own.

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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.

Here are all the current UniFi NAS Solutions & Prices: UniFi UNAS 4  (4 Bay + 2x M2, $379) – HERE UniFi UNAS 2 (2 Bay, $199) – HERE UniFi UNAS Pro (7 Bay, $499) – HERE UniFi UNAS Pro 4 (4 Bay + 2x M.2, $499) – HERE UniFi UNAS Pro 8 (8-Bay + 2x M.2, $799) HERE

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! 

PROs of the UniFi UNAS 4

CONs of the UniFi UNAS 4

$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

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

 

Here are all the current UniFi NAS Solutions & Prices: UniFi UNAS 4  (4 Bay + 2x M2, $379) – HERE UniFi UNAS 2 (2 Bay, $199) – HERE UniFi UNAS Pro (7 Bay, $499) – HERE UniFi UNAS Pro 4 (4 Bay + 2x M.2, $499) – HERE UniFi UNAS Pro 8 (8-Bay + 2x M.2, $799) HERE

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Need Advice on Data Storage from an Expert?

Finally, for free advice about your setup, just leave a message in the comments below here at NASCompares.com and we will get back to you. Need Help? Where possible (and where appropriate) please provide as much information about your requirements, as then I can arrange the best answer and solution to your needs. Do not worry about your e-mail address being required, it will NOT be used in a mailing list and will NOT be used in any way other than to respond to your enquiry. [contact-form-7] TRY CHAT Terms and Conditions   Alternatively, why not ask me on the ASK NASCompares forum, by clicking the button below. This is a community hub that serves as a place that I can answer your question, chew the fat, share new release information and even get corrections posted. I will always get around to answering ALL queries, but as a one-man operation, I cannot promise speed! So by sharing your query in the ASK NASCompares section below, you can get a better range of solutions and suggestions, alongside my own.

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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.

	UNAS Pro (7 Bay, $499)	UNAS Pro 4 (4 Bay, $499)	UNAS Pro 8 (8 Bay, $799)

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.

UNAS PRO 8 480MM DEPTH	UNAS PRO 325MM DEPTH
UNAS PRO 4 400MM DEPTH	DON’T FORGET RAILS!!!

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.

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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.

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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.

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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.

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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.

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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

Need Advice on Data Storage from an Expert?

Finally, for free advice about your setup, just leave a message in the comments below here at NASCompares.com and we will get back to you. Need Help? Where possible (and where appropriate) please provide as much information about your requirements, as then I can arrange the best answer and solution to your needs. Do not worry about your e-mail address being required, it will NOT be used in a mailing list and will NOT be used in any way other than to respond to your enquiry. [contact-form-7] TRY CHAT Terms and Conditions   Alternatively, why not ask me on the ASK NASCompares forum, by clicking the button below. This is a community hub that serves as a place that I can answer your question, chew the fat, share new release information and even get corrections posted. I will always get around to answering ALL queries, but as a one-man operation, I cannot promise speed! So by sharing your query in the ASK NASCompares section below, you can get a better range of solutions and suggestions, alongside my own.

WE LOVE COFFEE

 

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!

Here are all the current UniFi NAS Solutions & Prices: UniFi UNAS Pro 4 (4 Bay + 2x M.2, $499) – HERE UniFi UNAS 2 (2 Bay, $199) – HERE UniFi UNAS 4  (4 Bay + 2x M2, $379) – HERE UniFi UNAS Pro (7 Bay, $499) – HERE UniFi UNAS Pro 8 (8-Bay + 2x M.2, $799) HERE

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.

Here are all the current UniFi NAS Solutions & Prices: UniFi UNAS Pro 4 (4 Bay + 2x M.2, $499) – HERE UniFi UNAS 2 (2 Bay, $199) – HERE UniFi UNAS 4  (4 Bay + 2x M2, $379) – HERE UniFi UNAS Pro (7 Bay, $499) – HERE UniFi UNAS Pro 8 (8-Bay + 2x M.2, $799) HERE

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! 

PROs of the UniFi UNAS Pro 4 NAS

PROs of the UniFi UNAS Pro 4 NAS

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

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

 

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