UniFi UNAS – 1 Year Later. Should You Buy Now?

It has now been one full year since Ubiquiti made its formal debut in the NAS market with the launch of the UniFi UNAS Pro, a 7-bay rackmount storage system designed to integrate seamlessly within the existing UniFi ecosystem. At launch, the device was seen as a bold but limited step into a space traditionally dominated by established brands such as Synology and QNAP, focusing more on straightforward network storage than application-heavy server functions. Over the following twelve months, the company has steadily expanded the UNAS lineup and rolled out numerous firmware and software updates, refining its NAS operating system, UniFi Drive, and addressing user feedback gathered through real-world testing. From introducing multiple new RAID configurations, encryption, fan control, and USB backup capabilities, to expanding cloud backup support and improving system responsiveness, UniFi has demonstrated a consistent approach to building out the platform incrementally rather than replacing hardware prematurely. Today, the UNAS family includes five systems spanning both desktop and rackmount designs, with capacity options ranging from 2-bay PoE-powered units to 8-bay multi-10GbE solutions. Taken together, these changes illustrate a deliberate evolution of UniFi’s NAS portfolio from a proof of concept into a structured, multi-tier ecosystem with increasing competitiveness in the storage market.

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

Unifi UNAS, 1 Year Later – THE TL;DR:

In a rush and just want the cold facts? Here’s a clear TL;DR breakdown of all major UniFi UNAS product and software changes over the past 12 months, based entirely on your three video transcripts (3 months, 6 months, 1 year). It captures both software and hardware evolution, along with remaining limitations and future signals.

Initial Launch (UNAS Pro, Oct 2024)

• First UniFi NAS, priced at $499, 7-bay rackmount, ARM CPU, 10GbE networking.

• Marketed as “pure storage” for UniFi ecosystem integration, not an app-rich NAS.

• Praised for value, build quality, and easy setup.

• Criticized for missing features: iSCSI, RAID 6, multiple pools, containerization, USB ports, UniFi Protect integration, and limited cloud backup (Google Drive only).

• Early software lacked advanced admin control, backup management, and multi-user oversight.

• SMB performance and file integrity inconsistencies appeared during large data transfers.

• Frequent backend updates released in first quarter, addressing GUI layout, alignment, and minor stability fixes.

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3-Month Mark (Jan 2025)

• Rapid patching cycle began: RAID 6 added, marking UniFi’s first major new feature.

• Ongoing bugs fixed in the Drive OS interface and file manager.

• Still missing key functionality like iSCSI and multiple pools.

• Admin-level restrictions persisted; super admins could not manage user backups.

• File browser inconsistencies fixed only partially (e.g., trash handling, SMB sync).

• Backups limited to other UNAS or Google Drive, no AWS or S3 options yet.

• Users frustrated by Safari bug (incomplete file downloads on iPhone, later acknowledged by UniFi).

• Performance still below expectations on large SMB transfers; memory leaks and “skipped file” issues noted.

• Despite flaws, praised for value and ongoing support rather than abandonment.

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6-Month Mark (Apr 2025)

• Software maturity improving, most updates focused on stability rather than new features.

• RAID 6 officially released across all devices, with migration tools from RAID 5 + hot spare.

• New cloud backup options: Dropbox and OneDrive added.

• Admin control improved: super admins could now manage user backups and shared drives.

• File sharing responsiveness and accuracy improved significantly in the GUI.

• New file activity monitor added, showing per-folder change history.

• Apple Time Machine backups now officially supported.

• Fixed .exe execution issue when accessed via SMB.

• Ongoing quality-of-life improvements: faster interface, better consistency, fewer sync issues.

• Remaining issues:

  • Still no iSCSI, no fan control, no scheduled power management, and occasional temperature irregularities.

  • GUI bug showed 20,000 days uptime (fixed later).

• System temperatures remained high (~68–72°C CPU under light load), highlighting poor thermal automation.

• No new NAS hardware yet announced at this point.

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1-Year Mark (Oct 2025)

• Major expansion: full UNAS lineup introduced.

  • UNAS 2: 2-bay PoE++ desktop ($199).

  • UNAS 4: 4-bay desktop with M.2 slots.

  • UNAS Pro 4: 1U rackmount, 4-bay, dual PSU support.

  • UNAS Pro 8: 8-bay, 3x10GbE ports, 2x M.2 slots ($799).

• Core software improvements across all models:

  • Multiple RAID levels and hot-spare support expanded.

  • Multiple pools and clustered RAID pools introduced (first time UniFi allowed split or mixed pools).

  • M.2 NVMe caching added on larger models (read/write caching only).

  • Encrypted volumes now supported and integrated into backup routines.

  • Fan control added, both manual and automatic.

  • USB-C mounting and backup support for desktop models (UNAS 2, UNAS 4).

  • Expanded cloud backup integration (Google Drive, Dropbox, OneDrive).

  • Snapshot performance improved, faster rollback and lower latency.

  • SMB and NFS protocols optimized for better throughput and reduced latency.

  • Improved admin tools for shared drives and user management.

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Software Features Added/Improved in UniFi UNAS in 12 Months

In the twelve months since the release of the original UNAS Pro, UniFi Drive OS has developed from a relatively simple file server interface into a more complete NAS management platform. Early releases of the Drive software offered only basic storage creation and sharing options, limited to single-pool RAID 5 or mirror configurations with few administrative tools. Over time, multiple key features have been introduced, including support for RAID 6, multiple storage pools, clustered RAID pools, and hot spare functionality, each of which was implemented through system firmware updates and confirmed through beta and public release candidates. The platform now supports encrypted volumes, user-defined snapshots, and restoration features, offering greater resilience and improved recovery options after system events or accidental deletions. These updates collectively mark a notable improvement in fault tolerance and customization, allowing the UNAS range to better serve both small business and advanced home deployments that require multiple storage tiers or redundancy strategies.

Beyond storage structure, UniFi Drive has also introduced new tools for day-to-day administration and external connectivity. Cloud backup support has expanded to include Dropbox, OneDrive, and Google Drive, replacing the early limitation to only local or UNAS-to-UNAS replication. Shared drive management now includes central administrative oversight, allowing super admins to configure and monitor user-level backup routines across all profiles. The graphical interface itself has become more responsive, adding a file activity monitor that provides timeline-based access logs for folders and files. Support for Apple Time Machine has been added, as well as improved handling of executable files via SMB, and overall network protocol efficiency has increased through back-end adjustments to Samba and NFS. With these refinements, UniFi Drive OS now feels less like an experimental branch and more like a unified part of the broader UniFi management ecosystem, with greater parity across its networking, surveillance, and storage products.

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Hardware Products Added/Improved in UniFi UNAS in 12 Months

Since the launch of the original UniFi UNAS Pro in late 2024, Ubiquiti has expanded the UNAS product line into a full hardware family, each model tailored for different deployment scales and power requirements. The first expansion arrived with the compact UNAS 2, a two-bay desktop NAS powered by PoE++, marking the brand’s first use of Power-over-Ethernet as a primary power source for network storage. This device, built around a quad-core ARM Cortex-A55 CPU and 4 GB of LPDDR4 memory, aimed to serve as a lightweight edge storage unit for small offices or UniFi network environments that rely on central power distribution. Its 2.5GbE connection and USB-C port (5 Gbps) provided moderate performance for local transfers and basic backup operations, while its non-hot-swappable dual-drive cage emphasized affordability over convenience. This smaller system demonstrated UniFi’s intent to create entry-level options that could still operate within their ecosystem while maintaining core integration with UniFi Drive OS and cloud management via ui.com.

The next step up in the product family is the UNAS 4, a four-bay desktop NAS that builds directly on the UNAS 2’s design but adds more flexibility. It retains the same ARM Cortex-A55 processor and 4 GB RAM, but introduces dual M.2 NVMe slots for SSD caching or storage expansion and four 3.5-inch SATA bays for larger arrays. It still uses 2.5GbE with PoE+++ as its main power and data input, though at the time of writing, UniFi has not confirmed if the final retail version will include a secondary Ethernet port for redundancy or faster link aggregation. This model brings the UniFi storage ecosystem closer to small business-level performance, allowing for RAID 6 redundancy and improved cooling through a refined chassis design. While compact, the inclusion of NVMe caching and full integration into UniFi Drive 3.3 makes it a practical choice for users who want local storage with minimal cabling and higher data throughput.

At the higher end, the UNAS Pro 4 and UNAS Pro 8 extend the lineup into the rackmount segment, reinforcing UniFi’s move toward professional and enterprise environments. The UNAS Pro 4 adopts a 1U form factor, supporting four 3.5-inch SATA drives and two M.2 NVMe slots, while maintaining the same ARM Cortex-A57 CPU and 16 GB LPDDR4 memory as its larger sibling. It also supports dual hot-swappable PSUs for redundancy and arrives with improved thermal airflow optimized for data center racks. The flagship UNAS Pro 8 offers eight 3.5-inch bays, two rear M.2 NVMe bays, and three 10GbE ports (one RJ45 and two SFP+), making it the highest-performing UniFi NAS to date. The system consumes up to 200W under load, uses Btrfs as the primary file system, and integrates the most comprehensive cooling and failover options in the UniFi NAS lineup. Together, these models illustrate UniFi’s full-tier hardware strategy: from PoE-powered desktop storage to rackmount systems supporting multi-gigabit networking and dual redundant power.

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Fixes, Changes and Improvements in UniFi UNAS in 12 Months

Over the past year, UniFi has steadily refined the UNAS operating environment, addressing a number of software and usability issues identified by early adopters of the original UNAS Pro. Many of these improvements were released through incremental firmware updates across both the Drive OS and UniFi Controller platforms. Among the most significant early fixes was the resolution of file handling inconsistencies between the built-in web file manager and SMB-based network access, which previously caused discrepancies when deleting or restoring data.

This issue, which affected synchronization between the NAS GUI and mapped network shares, has now been corrected. Similarly, early memory leak and permission errors during large-scale SMB transfers have been resolved through back-end optimization, reducing skipped files and improving overall data reliability. Updates to the system logs and storage integrity checks also brought clearer reporting of failed transfers and RAID rebuild activity, ensuring that users now receive consistent system notifications and warnings.

Another key focus for UniFi’s development team over the last twelve months has been user management, network integration, and environmental control. Earlier versions of Drive OS restricted backup operations to individual users, preventing the super admin from managing backups or schedules across the system. This has since been rectified, allowing full central backup management, while user permission hierarchies have been expanded to distinguish between local-only accounts, remote accounts, and enterprise identity-linked users.

Environmental improvements include the long-requested fan control interface, which gives users the option to manually adjust fan speeds or keep automatic control active depending on temperature thresholds. The addition of real-time thermal monitoring, more accurate CPU and drive temperature reporting, and improved resource graphs now make it easier to track system health. The Drive 3.3 release also introduced a refined GUI with more responsive dashboard elements, consistent data updates in the system console, and a correction to the long-standing uptime reporting bug that falsely displayed “20,000 days active.”

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Missing Features and Planned Features in UniFi UNAS in the Next 12 Months

Despite significant progress since the launch of the original UNAS Pro, several key features are still missing from the UniFi Drive OS ecosystem. The most frequently requested addition from users continues to be iSCSI target and initiator support, a capability that would allow direct block-level storage mapping for virtual machines and professional applications. Its absence limits the UNAS series to traditional network file protocols such as SMB and NFS, which are less efficient for tasks requiring raw storage access or integration with virtualization platforms. Equally, the continued lack of RAID 0 support restricts high-performance users who are willing to trade redundancy for speed. While RAID 6 and clustered pools have been introduced, there is still no configuration option that prioritizes sequential throughput over redundancy. Another omission is a native UniFi Drive client tool for Windows, macOS, or Linux that would allow direct desktop synchronization, local file pinning, and on-demand streaming similar to Synology Drive or Dropbox. At present, users must rely on the web interface or manually mapped drives, which limits productivity and offline access.

Looking forward, UniFi has hinted through developer notes and recent firmware structure that the ENAS (Enterprise NAS) line will introduce ZFS file system support, marking a major shift toward high-end storage with data integrity and snapshot efficiency beyond Btrfs. This aligns with the observed trend of UniFi testing ZFS integration within their enterprise roadmap, possibly extending limited functionality to future revisions of the Pro 4 and Pro 8. The upcoming UniFi Drive 3.3 and 3.4 updates are also expected to expand fan and power scheduling, allowing users to define specific system on/off cycles and control Ethernet port activation schedules, effectively creating customizable air-gap routines. Additionally, UniFi’s roadmap includes exploring expansion connectivity, potentially leveraging unused 10GbE interfaces for network-based expansion enclosures or storage clustering between UNAS units. This would mirror the high-availability (HA) or expansion behavior of established NAS brands, though implemented entirely over the UniFi network layer.

UniFi is also expected to refine NVMe handling, particularly the ability to use installed M.2 drives as standalone storage pools rather than just as cache devices. The introduction of pool-level tiering and dynamic storage balancing could allow users to automatically assign workloads between SSD and HDD pools, improving I/O efficiency without manual adjustment. Beyond hardware-level improvements, there is ongoing demand for the integration of UniFi Protect within the NAS family, allowing video surveillance to run on the same physical storage units rather than on separate NVRs. Although UniFi has historically separated its Protect and Drive ecosystems, internal hardware similarities between the UNAS Pro and UNVR Pro systems suggest eventual compatibility is possible. Finally, more advanced backup filters, bandwidth scheduling, and automated snapshot policies are likely to appear in the next major OS iteration as part of UniFi’s effort to close the gap with traditional NAS brands while maintaining its minimalist network-first design approach.

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Conclusion and Verdict – Is the UniFi UNAS Good Now?

One year after the launch of the original UniFi UNAS Pro, the UniFi NAS platform has evolved from a single experimental product into a diversified ecosystem that spans both desktop and rackmount storage. The introduction of the UNAS 2, UNAS 4, UNAS Pro 4, and UNAS Pro 8 demonstrates that Ubiquiti is committed to building a scalable product range capable of serving both home users and small business environments. On the software side, the development of UniFi Drive OS has been steady and deliberate, with a focus on improving reliability, expanding RAID options, and tightening cloud and local backup integration. These changes, combined with improved temperature management, admin-level control, and performance tuning for SMB and NFS, have resulted in a more mature and dependable NAS experience than the early versions from 2024. However, the range remains deliberately streamlined, prioritizing simplicity and ecosystem integration over third-party app support or virtualization features.

Looking ahead, the next phase of the UniFi NAS roadmap appears to focus on deeper enterprise integration and feature parity with long-standing NAS brands. The likely addition of iSCSI, ZFS, and network-based expansion options will determine how far UniFi can move beyond entry and mid-range use cases. The hardware continues to rely on ARM processors rather than x86, which reinforces UniFi’s focus on efficiency and security but limits advanced workloads such as containerization and VM hosting. Even so, the value proposition remains strong, particularly given the aggressive pricing across the entire UNAS range and its seamless compatibility with the existing UniFi infrastructure. Overall, UniFi’s NAS systems are no longer a novelty—they represent a serious and rapidly developing branch of the company’s portfolio that has gained stability, utility, and confidence within just one year.

You can buy the UniFi UNAS Pro 8 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! 

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

 

 

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UniFi MASSIVELY Scale up their NAS Portfolio with the UNAS Pro 8, UNAS Pro 4, UNAS 4 and UNAS 2

Note, the UNAS Pro 2 is NOW LIVE on the UniFi Store . The UNAS 4, UNAS Pro 4 and UNAS Pro 8 are now in the site, but are not available till October.

Ubiquiti is preparing to significantly broaden its NAS product line in late 2025 with the introduction of four new systems under the UNAS branding. The new lineup follows the launch of the original UNAS Pro in 2024, which gained attention as a low-cost, seven-bay rackmount appliance that introduced UniFi into the NAS sector. With the release of the UNAS 2, UNAS 4, UNAS Pro 4, and UNAS Pro 8, the company is moving into what it describes as its “phase two” of NAS development, aiming to cover both desktop and rackmount form factors while integrating closely with the wider UniFi ecosystem. This expansion arrives at a time when established NAS vendors are tightening drive compatibility and raising prices, leaving a gap for alternatives that emphasise affordability, simplified deployment, and ecosystem consistency.

The UNAS Pro 8 NAS

4-Core ARM, 16GB RAM, 3x 10GbE, 8x SATA Bays, 2x M.2 Bays (trays required), Redundant PSU (2nd Sold Seperately) $799 – HERE

The UNAS Pro 8 will serve as the top-end model of the range, positioned in a 2U rackmount chassis and built to deliver higher capacity and redundancy. It features eight front-facing 2.5″/3.5″ SATA bays alongside two rear-mounted M.2 NVMe slots, accessible through modular trays.

The Pro 8 is powered by a quad-core ARM Cortex-A57 processor running at 1.7 GHz and paired with 16 GB of LPDDR4 memory. Unlike many entry-level ARM systems, the Pro 8 includes three 10-gigabit network interfaces: two SFP+ and one RJ45 supporting multi-gig speeds down to 100 MbE. Redundant hot-swappable 550W PSUs are supported, though only one is included by default, with seamless failover tested successfully under load.

Category	Specification
Form Factor	Rackmount NAS (2U)
Dimensions	442.4 x 480 x 87.4 mm (44.24 x 48.0 x 8.74 cm)
Weight	11.5 kg (25.35 lb)
Enclosure Material	SGCC steel
Mounting	Rack rails included
Drive Bays	8 x 2.5″/3.5″ SATA HDD/SSD
M.2 Support	2 x M.2 NVMe slots (2280/22110) via rear tray modules (sold separately)
RAID Support	RAID 0, 1, 5, 6, clustered RAID, Single Disk
Hot Swap	Supported
Max Drive Capacity	Tested up to 30 TB HDDs; UniFi-branded and third-party drives supported
CPU	Quad-Core ARM Cortex-A57, 1.7 GHz
Memory	16 GB LPDDR4 (non-upgradeable)
System Storage	~25.2 GB internal flash (likely 32 GB with over-provisioning)
Network Interfaces	2 x 10G SFP+, 1 x 10GbE RJ45 (multi-gig fallback to 5G/2.5G/1G/100M)
USB / Expansion	None
Power Method	Dual PSU bays, hot-swappable modules
Power Supply	2 x 550W AC/DC hot-swappable PSUs (1 included by default)
Max Power Budget	175W for drives
Max Consumption	200W
Cooling	Multiple system fans with active fan control
Management	UniFi OS web interface; Ethernet, Bluetooth 4.1 for setup
Software File System	Btrfs with snapshot support
Certifications	FCC, CE, IC; NDAA Compliant

The system uses SGCC steel for the enclosure, weighs 11.5 kg, and includes rack rails in the box, a detail rarely seen in turnkey solutions. Performance tests have demonstrated sequential reads close to 850 MB/s on HDDs in RAID 5, with expectations of saturating a 10GbE link when using SSDs or RAID 0.

The UNAS 2 NAS

4-Core ARM, 4GB RAM, 1X 2.5GbE PoE+++, 2x SATA Bays, Power Over Ethernet delivery (PoE+++ Adapter Included) $199 – HERE

At the opposite end of the spectrum is the UNAS 2, UniFi’s smallest NAS to date. This desktop unit measures just 13.5 x 12.9 x 22.37 cm and weighs 1.3 kg, with a polycarbonate chassis designed to keep cost and weight down.

The device supports two 3.5″ SATA drives housed in a shared tray, a design that requires both drives to be removed together and does not permit hot-swapping. This approach raises concerns about handling healthy drives during replacement but reduces the mechanical complexity of the system.

Category	Specification
Form Factor	Desktop NAS
Dimensions	135 x 129 x 223.7 mm (13.5 x 12.9 x 22.37 cm)
Weight	1.3 kg (2.85 lb)
Enclosure Material	Polycarbonate
Drive Bays	2 x 3.5″ SATA HDD
RAID Support	RAID 0, RAID 1, Single Disk
Hot Swap	Not supported (shared tray for both drives)
Max Drive Capacity	Confirmed support up to 30 TB HDDs
CPU	Quad-Core ARM Cortex-A55, 1.7 GHz
Memory	4 GB LPDDR4 (non-upgradeable)
System Storage	Internal flash for operating system
Network Interface	1 x 2.5 GbE RJ45 (PoE++ power + data)
USB Ports	1 x USB-C (5 Gbps, storage devices only)
Power Method	PoE++ (via 2.5 GbE port)
Power Supply	60W PoE++ injector included
Max Power Budget	52W for drives, 60W maximum system consumption
Cooling	Rear cooling fan with bottom intake vents, software fan control
Display	1.47″ colour LCM (status only, non-touch)
Noise Levels	~31–32 dBA idle, up to ~38 dBA under load
Thermal Range	CPU ~75–80°C under stress, 50–60°C idle/light use
Management	UniFi OS web interface, Ethernet, Bluetooth 4.1 for setup
Certifications	FCC, CE, IC; NDAA Compliant

The UNAS 2 runs on a quad-core ARM Cortex-A55 at 1.7 GHz with 4 GB of LPDDR4 memory. Networking is provided by a single 2.5 GbE RJ45 port, which also delivers PoE++ power, with a maximum system budget of 60W (52W for drives). A 60W PoE++ injector is included for users without a suitable switch. A 1.47-inch colour LCM display on the front provides status updates, though it is non-interactive. A USB-C port rated at 5 Gbps adds external storage capability, addressing an omission noted in the original UNAS Pro, but it does not support UPS integration or networking adapters.

The UNAS Pro 4 NAS

4-Core ARM, 16GB RAM, 10GbE, 4x SATA Bays, 2x M.2 Bays (trays required), Redundant PSU (2nd Sold Seperately) $499 – HERE

Between these two extremes sits the UNAS Pro 4, a 1U rackmount unit designed for users who want the resilience of redundant PSUs and NVMe support without committing to an eight-bay chassis.

It includes four SATA bays and two M.2 NVMe slots, sharing the same ARM Cortex-A57 CPU and 16 GB of memory as the Pro 8. Like its larger counterpart, it is built for rack environments where redundancy and compact form factor are key priorities.

While exact dimensions and weight have not yet been confirmed (with the UNAS 2 and UNAS Pro 8 being the main focus of this new launch), the design is expected to follow Ubiquiti’s established rackmount conventions. Its specification profile makes it an option for smaller businesses or branch offices that need rack integration but do not require the capacity of an eight-bay system.

Category	Specification
Form Factor	Rackmount NAS (1U)
Drive Bays	4 x 2.5″/3.5″ SATA HDD/SSD
M.2 Support	2 x M.2 NVMe slots
RAID Support	RAID 0, 1, 5, 6, clustered RAID, Single Disk
Hot Swap	Supported
CPU	Quad-Core ARM Cortex-A57, 1.7 GHz
Memory	16 GB LPDDR4 (non-upgradeable)
System Storage	Internal flash for operating system
Network Interfaces	Expected 2 x 10G SFP+, 1 x 10GbE RJ45 (matching UNAS Pro 8, TBC)
Power Method	Dual PSU bays, hot-swappable modules
Power Supply	2 x hot-swappable AC/DC PSUs (1 included by default)
Cooling	Multiple system fans with front-to-rear airflow
Management	UniFi OS web interface; Ethernet, Bluetooth 4.1 for setup
Positioning	Compact 1U rackmount, same CPU/RAM as Pro 8, with redundancy support

The UNAS 4 NAS

4-Core ARM, 4GB RAM, 1X 2.5GbE PoE+++ (TBC), 4x SATA Bays, 2x M.2 Bays (trays required), Power Over Ethernet delivery (PoE+++ Adapter Included) $379 – HERE

The UNAS 4, meanwhile, extends the desktop line and mirrors the design philosophy of the UNAS 2 but doubles the bay count.

It provides four 3.5″ SATA bays along with two M.2 slots, making it the only desktop model in the range to support NVMe caching or tiered storage.

It retains the same ARM Cortex-A55 CPU and 4 GB of fixed memory as the UNAS 2, positioning it as a modest but slightly more versatile desktop option.

Like the smaller model, it uses PoE+++ for power delivery and 2.5 GbE for connectivity, though it remains unconfirmed whether it will also include a secondary network interface for failover or link aggregation. As with other desktop models, the chassis is constructed from polycarbonate, with compact dimensions intended for office or home use rather than data centre deployment.

Category	Specification
Form Factor	Desktop NAS
Enclosure Material	Polycarbonate
Drive Bays	4 x 3.5″ SATA HDD
M.2 Support	2 x M.2 NVMe slots (for caching/tiered storage)
RAID Support	RAID 0, 1, 5 (dependent on bay usage)
Hot Swap	Not confirmed (likely similar tray design to UNAS 2)
CPU	Quad-Core ARM Cortex-A55, 1.7 GHz
Memory	4 GB LPDDR4 (non-upgradeable)
Network Interface	1 x 2.5 GbE RJ45 (PoE+++ power + data), possible secondary port (TBC)
USB Ports	1 x USB-C (5 Gbps, storage devices only)
Power Method	PoE+++
System Storage	Internal flash for operating system
Cooling	Rear fan with bottom intake, adjustable via UniFi OS
Management	UniFi OS web interface, Ethernet, Bluetooth 4.1 for setup
Positioning	Desktop equivalent to UNAS 2, scaled up with four bays and M.2 support

UniFi Drive 3.3 Update?

Alongside the hardware announcements, UniFi will also release UniFi Drive 3.3, a major update to its NAS management software.

This version introduces expanded RAID configuration options, broader support for third-party cloud platforms, enhanced fan control, and improved analytical tools for monitoring system health and performance.

Snapshots and backups remain central features, with cloud and LAN targets supported, while the update also improves scheduling flexibility and introduces additional reporting features.

Although iSCSI remains absent, UniFi Drive continues to mature from the limited platform released with the first UNAS Pro, and the 3.3 update is expected to improve usability across the entire new range.

The introduction of these four models demonstrates Ubiquiti’s intent to build a full family of NAS solutions rather than rely on a single experimental release. By offering both rackmount and desktop systems at varying capacities, the company is positioning itself to compete more directly with established NAS vendors, albeit with a more streamlined and ecosystem-focused approach. The UNAS 2 and UNAS 4 are targeted primarily at existing UniFi users seeking simple storage that integrates seamlessly with PoE switches, while the Pro 4 and Pro 8 are built to appeal to businesses looking for redundancy, higher bay counts, and greater throughput. The use of ARM processors across the line reflects UniFi’s efficiency-first design, even though it places limits on heavy workloads such as virtualisation or multimedia transcoding.

Detailed performance reviews and comparisons of the new models are expected in the weeks ahead, assessing how each device performs within its target segment. Particular attention will focus on how the Pro units handle sustained 10GbE workloads with HDD and SSD configurations, how the PoE-driven desktop models cope with thermal and power constraints, and how UniFi Drive 3.3 stacks up against more mature operating systems. With Ubiquiti steadily fleshing out its NAS portfolio one year on from the first UNAS Pro, the company’s ability to deliver consistent updates and address early hardware and software limitations will determine whether it can establish a lasting position in the NAS market.

Feature	UNAS Pro (2024)	UNAS 2	UNAS 4	UNAS Pro 4	UNAS Pro 8
Price	$499	$199	$379	$499	$799
Form Factor	Rackmount (2U)	Desktop	Desktop	Rackmount (1U)	Rackmount (2U)
Dimensions	Not confirmed	135 x 129 x 223.7 mm (13.5 x 12.9 x 22.37 cm)	TBC (similar scale, polycarbonate)	TBC (compact 1U rack)	442.4 x 480 x 87.4 mm (44.24 x 48.0 x 8.74 cm)
Weight	Not confirmed	1.3 kg	TBC (slightly heavier than UNAS 2)	TBC	11.5 kg
Enclosure Material	Metal (likely steel)	Polycarbonate	Polycarbonate	SGCC steel	SGCC steel
Drive Bays	7 x 2.5″/3.5″ SATA	2 x 3.5″ SATA	4 x 3.5″ SATA	4 x 2.5″/3.5″ SATA	8 x 2.5″/3.5″ SATA
M.2 NVMe Support	None	None	2 x M.2 NVMe	2 x M.2 NVMe	2 x M.2 NVMe
Hot Swap	Supported	Not supported (shared tray)	Likely limited (TBC)	Supported	Supported
Max Drive Capacity	> 20 TB confirmed	Up to 30 TB confirmed	Up to 30 TB expected	Up to 30 TB expected	Up to 30 TB confirmed
CPU	Quad-Core ARM Cortex-A57, 1.7 GHz	Quad-Core ARM Cortex-A55, 1.7 GHz	Quad-Core ARM Cortex-A55, 1.7 GHz	Quad-Core ARM Cortex-A57, 1.7 GHz	Quad-Core ARM Cortex-A57, 1.7 GHz
Memory	8 GB (early models)	4 GB LPDDR4 (non-upgradeable)	4 GB LPDDR4 (non-upgradeable)	16 GB LPDDR4 (non-upgradeable)	16 GB LPDDR4 (non-upgradeable)
System Storage	Internal flash (size not disclosed)	Internal flash	Internal flash	Internal flash	~25.2 GB internal flash (likely 32 GB with OP)
Network Interfaces	1 x 10GbE RJ45 (front-mounted)	1 x 2.5 GbE RJ45 (PoE++)	1 x 2.5 GbE RJ45 (PoE+++), possible 2nd port (TBC)	Expected: 2 x 10G SFP+, 1 x 10GbE RJ45	2 x 10G SFP+, 1 x 10GbE RJ45
USB Ports	None	1 x USB-C (5 Gbps, storage only)	1 x USB-C (5 Gbps, storage only)	None	None
Power Method	AC PSU (non-redundant)	PoE++ (via 2.5 GbE)	PoE+++	Dual PSU bays (hot-swappable)	Dual PSU bays (hot-swappable)
Power Supply	Integrated AC PSU	60W PoE++ injector included	PoE+++ injector/switch required	2 x hot-swappable PSUs (1 included)	2 x 550W hot-swappable PSUs (1 included)
Max Power Budget	Not published	52W for drives, 60W total	TBC (expected ~80–100W)	~150W (TBC)	175W for drives, 200W total
Cooling	Passive vents + fans, limited fan control (later patched)	Rear fan, bottom vents, fan control via OS	Rear fan with bottom intake, fan control	Front-to-rear airflow, multiple fans	Front-to-rear airflow, multiple fans
Display	Small LCD panel with system info	1.47″ colour LCM (status only)	TBC (likely same as UNAS 2)	None	None
Noise Levels	Moderate (rackmount fans)	~31–32 dBA idle, up to ~38 dBA load	Slightly higher than UNAS 2 (TBC)	Typical 1U fan noise	Adjustable, depends on drive/fan profile
Thermal Range	CPU ~70–80°C under load	CPU ~75–80°C stress, ~50–60°C idle	Similar to UNAS 2 (TBC)	~70–80°C CPU under load	CPU ~74–80°C, drives 38–47°C
Management	UniFi OS web interface, Ethernet	UniFi OS web interface, Ethernet, Bluetooth 4.1	UniFi OS web interface, Ethernet, Bluetooth 4.1	UniFi OS web interface, Ethernet, Bluetooth 4.1	UniFi OS web interface, Ethernet, Bluetooth 4.1
Software File System	Btrfs, snapshots (basic)	Btrfs, snapshots, backups	Btrfs, snapshots, backups	Btrfs, snapshots, clustered RAID	Btrfs, snapshots, clustered RAID
Certifications	FCC, CE (NDAA not confirmed)	FCC, CE, IC; NDAA compliant	FCC, CE, IC; NDAA compliant	FCC, CE, IC; NDAA compliant	FCC, CE, IC; NDAA compliant

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