10 Best NAS Enclosures With Four Bays for Flexible Storage in 2026

A four-bay enclosure gives you room to combine multiple drives for higher capacity, redundancy, or both. The right choice depends on whether you need a full network-attached storage system, a simpler USB DAS, or a flexible DIY chassis.

We compared 10 notable options across performance, connectivity, expansion, cooling, drive compatibility, and ease of use to help you find the best fit for your storage workflow in 2026.

Best 10 Nas Enclosure with Four Bays Picks for 2026

Best Overall NAS – QNAP TS-464 4-Bay NAS

The QNAP TS-464-8G-US is a practical nas enclosure with four bays for households, teams, and small businesses that need network-accessible storage. Its 8GB of DDR4 memory, dual 2.5GbE ports, NVMe expansion, and hot-swappable design support fast file sharing and flexible storage management.

Best For: Families, small offices, and users who want a full-featured desktop NAS for shared files, photos, videos, and backups.

Pros:

• Includes 8GB DDR4 RAM and a quad-core Intel processor.
• Dual 2.5GbE ports can accelerate network file transfers.
• Two M.2 PCIe Gen3x2 slots support caching or SSD storage pools.
• Multiple USB 3.2 Gen 2 ports support fast external transfers.

Cons:

• Drives are not specified as included, so storage may require a separate purchase.
• Its network advantages depend on compatible 2.5GbE equipment.

Choose the TS-464 when you want more than a basic drive enclosure. It combines four-bay expansion with useful networking, SSD support, and centralized media storage in a desktop form factor.

Best Direct-Connect Enclosure – WAVLINK 4-Bay USB-C Enclosure

The WAVLINK 4-Bay Hard Drive Enclosure is a versatile nas enclosure with four bays for direct-attached storage over USB-C. It accepts 3.5-inch and 2.5-inch SATA drives, offers up to 10Gbps transfers, and adds HDMI connectivity for compatible workstations.

Best For: Users who need expandable desktop storage without a full network operating system, especially for large media files and local workflows.

Pros:

• Four SATA bays support 3.5-inch HDDs and SSDs up to a stated 128TB total.
• USB 3.2 Type-C supports data rates up to 10Gbps.
• Built-in fans activate automatically at 48°C for temperature control.
• Independent bay power switches support hot-swappable flexibility.

Cons:

• 2.5-inch drives require mounting brackets, which are not included.
• HDMI video output requires a compatible host USB-C port and USB-C-to-C cable.
• It is a direct-attached enclosure rather than a standalone network NAS.

This enclosure is a strong fit when speed and drive flexibility matter more than NAS software. Its aluminum construction, cooling fans, and display output make it useful as a compact desktop storage hub.

Best for Creators and Teams – UGREEN DXP4800 GT 4-Bay NAS

The UGREEN NAS DXP4800 GT is a high-performance nas enclosure with four bays designed for creators, technical users, and office teams. Its Ryzen Embedded processor, 8GB of expandable RAM, dual 10GbE networking, and support for Docker and virtual machines provide room for demanding local workflows.

Best For: Video creators, multi-user offices, self-hosting enthusiasts, and users who need fast transfers plus expandable application support.

Pros:

• AMD Ryzen Embedded R2514 processor offers four cores and eight threads.
• 8GB DDR4 RAM can be expanded to 64GB.
• Dual 10GbE ports support high-speed networking and link aggregation.
• Includes SD, USB, HDMI, surveillance, Docker, and virtual-machine features.

Cons:

• Its advanced features may be more than needed for basic file storage.
• Drives are not included and must be purchased separately.
• Full network performance requires compatible 10GbE equipment.

The DXP4800 GT is the most capable option here for users building a broader local infrastructure. It combines four drive bays with fast networking, media workflows, surveillance tools, and application flexibility.

Best Budget DAS Option – QNAP TR-004 4-Bay RAID Enclosure

The QNAP TR-004 is a straightforward nas enclosure with four bays for users who prefer direct-attached storage. Connecting over USB Type-C, it supports four 3.5-inch SATA drives and hardware RAID modes, making it suitable for computer storage expansion or NAS backup.

Best For: Windows, macOS, and Linux users who want a simple four-drive DAS for backups, extra capacity, or hardware-managed RAID.

Pros:

• Supports RAID 0, 1, 5, JBOD, and individual-disk configurations.
• USB Type-C connectivity works with Windows, macOS, and Linux systems.
• Lockable drive bays add physical convenience.
• Can expand a compatible QNAP NAS or serve as external storage.

Cons:

• It is diskless, so drives must be supplied separately.
• USB transfer rate is listed at up to 5Gbps, below newer 10Gbps enclosures.
• QNAP NAS integration has model and software limitations.

The TR-004 makes sense when you need dependable four-drive expansion without the cost or complexity of a standalone NAS. Its hardware RAID support and broad computer compatibility keep the setup relatively simple.

Best Value NAS – Asustor Drivestor 4 Gen 2

The Asustor Drivestor 4 Gen 2 is a capable nas enclosure with four bays for home users and small offices that want networked storage, RAID flexibility, and private-cloud features. Its 2.5GbE connection is a useful upgrade for faster transfers, backups, and media streaming.

Best For: Home backups, private-cloud access, 4K media streaming, and flexible RAID storage.

Pros:

• Four bays support RAID 0/1/5/6/10 configurations.
• 2.5GbE networking improves transfer and streaming performance over standard Gigabit Ethernet.
• Btrfs snapshots and WORM support add protection against accidental deletion and ransomware.
• Tool-free installation and a three-year manufacturer warranty simplify ownership.

Cons:

• Ships diskless, so drives must be purchased separately.
• Its 1GB of DDR4 RAM is modest for heavier multitasking.

This is a well-rounded four-bay NAS for users who want more than basic file storage. RAID options, snapshots, remote access, and 4K media support make it especially practical for a personal home cloud.

Best Direct-Attached Storage – Sabrent 4-Bay USB-C Enclosure

The Sabrent DS-SC4B is a nas enclosure with four bays in the broad physical sense, but it is a direct-attached USB-C storage dock rather than a networked NAS. It provides four independent SATA drive connections for computers running Windows, macOS, or Linux.

Best For: Users who need expandable, locally attached multi-drive storage without a network NAS setup.

Pros:

• Supports up to four 3.5-inch SATA HDDs or SSDs over 10Gbps USB-C.
• Trayless hot-swap design enables tool-free drive insertion.
• Independent per-bay controllers, switches, and activity LEDs improve drive management.
• Aluminum-and-metal housing includes active cooling and a 100–240V power adapter.

Cons:

• It is JBOD direct-attached storage, not hardware RAID or a network NAS.
• Drives are not included.
• It has a one-year warranty unless extended through registration.

Choose this enclosure when direct USB storage is the priority. Its independent drive access and hot-swap bays are convenient, but buyers seeking remote access, NAS software, or built-in RAID should consider a true networked model instead.

Best Rackmount NAS – QNAP TS-464eU-8G-US

The QNAP TS-464eU-8G-US is a short-depth, 1U rackmount nas enclosure with four bays designed for teams and space-conscious server rooms. Its Intel quad-core processor, 8GB RAM, dual 2.5GbE ports, and NVMe expansion options support demanding file-sharing and storage workloads.

Best For: Small businesses and rack-based deployments that need faster networking and room for cache or SSD storage.

Pros:

• Intel quad-core CPU can burst up to 2.9GHz and includes 8GB RAM.
• Dual 2.5GbE ports support faster team file sharing and large transfers.
• Two M.2 PCIe Gen 3 x1 slots enable cache acceleration or SSD storage pools.
• HDMI 1.4b supports 4K output at 30Hz, with real-time transcoding capability.

Cons:

• Ships diskless, requiring separate storage drives.
• Rackmount design is less suited to users seeking a simple desktop NAS.
• The M.2 slots use PCIe Gen 3 x1 connectivity.

For a rack-mounted four-bay system, the QNAP combines strong baseline hardware with useful expansion options. Dual 2.5GbE and M.2 support make it a better fit for collaborative storage and performance-focused installations than a basic home file server.

Best Plug-and-Play DAS – Aluminum 4-Bay USB Enclosure

If you need a nas enclosure with four bays primarily for direct-attached storage, this CENMATE model offers a straightforward way to connect up to four 2.5- or 3.5-inch SATA drives. It uses USB 3.0 with USB-A and USB-C cabling, supports up to 80TB total, and includes tool-free hot-swappable bays.

Best For: Users who want expandable desktop storage without building a NAS or configuring RAID.

Pros:

• Supports four 2.5- or 3.5-inch SATA HDDs or SSDs, up to 20TB per drive.
• USB 3.0 delivers transfer rates up to 5Gbps with UASP support.
• Aluminum construction, built-in cooling fan, and tool-free hot-swappable drive bays.
• Compatible with Windows, Mac, and Linux, with USB-A and USB-C cables included.

Cons:

• This is a DAS enclosure, not a NAS, and it does not provide RAID.
• The fan may produce approximately 40–50 dB of noise.

Choose this enclosure when simple, high-capacity USB storage matters more than network access or redundancy features. Its four bays and broad drive support make it practical for backups, media libraries, and drive expansion from a desktop or laptop.

Best for DIY NAS Builds – 4+1 Bay Mini-ITX NAS Case

For builders creating a network-attached system, this 4+1 bay case provides a flexible foundation rather than a ready-to-use NAS. It supports a Mini-ITX motherboard, four 2.5- or 3.5-inch drive trays, an additional internal 2.5-inch bay, and a hot-swap backplane.

Best For: DIY NAS and private-cloud projects using a Mini-ITX motherboard and Flex or 1U power supply.

Pros:

• Supports four 2.5- or 3.5-inch drive bays plus one internal 2.5-inch bay.
• Compatible with Mini-ITX motherboards measuring 6.7 × 6.7 inches.
• Supports Flex or 1U power supplies and one single-slot, full-height PCIe card.
• Includes two front USB 3.0 ports, a hot-swap backplane, and a replaceable 80mm fan.

Cons:

• It is a bare case, so the motherboard, power supply, drives, and NAS software must be supplied separately.
• Hardware compatibility is limited to Mini-ITX boards and specified Flex or 1U power supplies.

This is the most suitable option here for assembling a true NAS enclosure with four bays, provided you are comfortable selecting compatible components and installing the operating system. The extra internal bay and PCIe expansion support add useful flexibility for a custom build.

Best for Hardware RAID – 4-Bay RAID DAS Enclosure

This CENMATE enclosure is a strong fit for shoppers comparing a nas enclosure with four bays but needing local RAID instead of network storage. It accepts four 2.5- or 3.5-inch SATA drives, supports up to 80TB, and offers RAID 0, 1, 3, 5, and 10 alongside Clone, Large, and Normal modes.

Best For: Users who need configurable RAID storage connected directly to a computer over USB 3.0 or eSATA.

Pros:

• Supports four SATA HDDs or SSDs with up to 20TB per drive.
• Offers eight modes, including RAID 0/1/3/5/10, Clone, Large, and Normal.
• Provides USB-A/USB-C 3.0 and eSATA connectivity, with transfer rates up to 5Gbps.
• Aluminum housing, cooling fans, and a 12V power adapter support sustained operation.

Cons:

• This is a DAS enclosure rather than a NAS, so it does not provide network access by itself.
• Hot-swapping is not supported, and eSATA multi-bay access requires a computer port with RAID functionality.
• Changing RAID modes requires a manual switch and reset procedure and may cause data loss.

Pick this model if hardware RAID and multiple connection options are more important than NAS features. Be especially careful when changing modes, and verify your computer’s eSATA capabilities before relying on that connection.

How We Picked the Best Nas Enclosure with Four Bays

We focused on products that provide four drive bays while covering the main buying scenarios: network storage for homes and offices, direct-attached storage for desktops, rackmount deployment, and DIY builds. We considered supported drive sizes, interface speed, RAID options, cooling, hot-swapping, software features, and installation requirements.

Because a NAS and a DAS solve different problems, we did not judge every enclosure by the same standard. Network models earn attention for remote access, backups, apps, and user management, while USB and eSATA models are better evaluated for straightforward local capacity and portability.

Quick Comparison

• Best for a complete home or office NAS: QNAP TS-464-8G-US or UGREEN NAS DXP4800 GT.
• Best for rack-mounted installations: QNAP TS-464eU-8G-US.
• Best for simple desktop expansion: QNAP TR-004, WAVLINK, or SABRENT enclosures.
• Best for a personal cloud: Asustor Drivestor 4 Gen 2 AS1204T.
• Best for customization: The 4 + 1 Bay DIY NAS Case.

Key Buying Factors for a Nas Enclosure with Four Bays

NAS, DAS, or DIY Chassis

A true NAS connects to your network and typically includes an operating system, remote access, shared folders, backup tools, and applications. A DAS connects directly to one computer over USB or eSATA and is usually simpler to configure. A DIY case provides the enclosure and drive layout, but you must supply compatible components, power, storage software, and cooling.

Drive Support and RAID

Check whether the enclosure accepts 3.5-inch hard drives, 2.5-inch SSDs, or both. RAID 1 protects against a single drive failure, while RAID 5 uses four drives more efficiently but requires rebuilding after a failure. RAID is not a substitute for an independent backup. Confirm whether RAID is managed by hardware, the NAS operating system, or your computer.

Connectivity and Real-World Speed

USB 3.2 Gen 2 and 10Gbps USB-C connections can improve transfers when the host computer, cable, and drives support them. A network NAS may also benefit from 2.5GbE or faster networking. Mechanical hard drives often become the performance limit, so do not choose a faster interface solely based on its headline specification.

Cooling, Noise, and Maintenance

Four drives generate heat, especially during prolonged transfers or RAID rebuilds. Look for active cooling, temperature-controlled fans, tool-free trays, and hot-swap support if you expect frequent maintenance. Also check the enclosure’s dimensions and noise level before placing it in a bedroom or shared workspace.

Who Should Buy Which Nas Enclosure with Four Bays?

Choose a full NAS if you want centralized backups, multi-user access, media services, or files available across phones and computers. Choose a DAS if you primarily need a large local volume for a workstation and prefer minimal setup. Rackmount buyers should prioritize depth, mounting compatibility, and cooling. Creators and office teams should look for faster networking, user permissions, snapshots, and backup integrations. Finally, choose a DIY enclosure only if you are comfortable selecting hardware and configuring the operating system yourself.