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

A four-bay enclosure gives you room to combine multiple drives into a larger, more resilient storage system without jumping straight to a rack full of hardware. The best choice depends on whether you need a full network-attached server, a simpler USB or Thunderbolt-style direct-attached enclosure, or a flexible DIY chassis.

Our roundup covers capable NAS units, RAID-enabled DAS products, rackmount hardware, and tool-free enclosures for home users, creators, small offices, and storage enthusiasts.

Best 10 Nas Enclosure with Four Bays Picks for 2026

Best Overall NAS – QNAP TS-464-8G-US

The QNAP TS-464-8G-US is a capable nas enclosure with four bays for home users, small teams, and business file storage. Its quad-core Intel processor, 8GB of RAM, dual 2.5GbE ports, and NVMe expansion give it more headroom than a basic file server.

Best For: Families, home offices, and small teams that want a full-featured desktop NAS with faster-than-gigabit networking.

Pros:

• 8GB DDR4 RAM and a quad-core Intel processor support multitasking.
• Dual 2.5GbE ports can accelerate file sharing and large transfers.
• Two M.2 PCIe Gen3x2 slots support cache acceleration or SSD storage pools.
• Multiple USB 3.2 Gen 2 ports provide up to 10Gb/s transfer speeds.

Cons:

• Drives are not specified as included, so the storage setup requires separate planning.
• Its desktop form factor may be less suitable for rack-mounted environments.

Choose this model when you want a balanced four-bay NAS that can handle personal media, shared files, and growing workloads. The 2.5GbE and NVMe options make it especially attractive for users upgrading beyond basic gigabit storage.

Best DAS Enclosure – WAVLINK 4-Bay SATA Enclosure

The WAVLINK enclosure is a practical choice if you need a nas enclosure with four bays primarily for direct-attached storage rather than a standalone NAS operating system. It accepts 3.5-inch and 2.5-inch SATA drives, connects over USB-C at up to 10Gbps, and adds HDMI output for compatible host devices.

Best For: Users who want expandable, hot-swappable drive storage connected directly to a desktop or laptop.

Pros:

• Four SATA 6Gbit/s bays support 3.5-inch and 2.5-inch drives.
• USB 3.2 Type-C offers data transfer rates up to 10Gbps.
• Independent bay power switches simplify drive management and swapping.
• Dual fans activate at 48°C to help manage drive temperatures.

Cons:

• 2.5-inch drives require separate mounting brackets.
• HDMI video output requires a compatible host USB-C port and USB-C-to-C cable.
• It is an enclosure or docking station, not a standalone NAS with built-in network services.

This model makes sense for direct storage expansion, media workflows, and local backups. Consider it instead of a network NAS when your primary need is fast USB-connected capacity and convenient drive access.

Best for Creators – UGREEN NAS DXP4800 GT

The UGREEN DXP4800 GT is a performance-focused nas enclosure with four bays for creators, technical users, and office teams. Its Ryzen Embedded processor, 8GB of expandable RAM, dual 10GbE ports, SSD expansion, and UGOS Pro software support demanding transfers and broader self-hosted workloads.

Best For: Creators and advanced users managing large media libraries, backups, Docker apps, surveillance footage, or multi-user workflows.

Pros:

• AMD Ryzen Embedded R2514 provides four cores, eight threads, and speeds up to 3.70GHz.
• 8GB DDR4 RAM can be expanded to 64GB.
• Dual 10GbE ports support high-speed networking and link aggregation on compatible equipment.
• Supports Docker, virtual machines, surveillance tools, SD-card backup, and multiple SSD expansion options.

Cons:

• Drives are not included.
• The advanced feature set may be more than casual file-storage users need.
• Some high-speed networking benefits depend on compatible network equipment.

The DXP4800 GT is the strongest fit here for users who expect their four-bay system to do more than store files. Its networking, memory expansion, application support, and local surveillance features provide room to build a more capable home or small-office platform.

Best Expansion DAS – QNAP TR-004

The QNAP TR-004 is a straightforward four-bay direct-attached storage option for expanding a computer or compatible QNAP NAS. This nas enclosure with four bays uses USB Type-C, accepts four 3.5-inch SATA drives, and includes hardware RAID modes for flexible local storage management.

Best For: QNAP owners and computer users who need a simple external storage or NAS-backup enclosure.

Pros:

• Four 3.5-inch SATA bays provide substantial external capacity.
• Hardware RAID supports RAID 0, 1, 5, JBOD, and individual-disk modes.
• USB Type-C connectivity works with Windows, macOS, and Linux.
• Lockable drive bays add physical convenience and security.

Cons:

• It is diskless, so drives must be purchased separately.
• It cannot run NAS applications or combine its storage pool with the connected NAS.
• Compatibility limitations apply to certain older QNAP NAS models.

The TR-004 is best viewed as an expansion or backup device rather than a standalone NAS. Its hardware RAID choices and broad computer compatibility make it a useful, relatively focused solution when you need additional local storage without buying another network appliance.

Best Overall – Asustor Drivestor 4 Gen 2

If you want a true NAS enclosure with four bays for private cloud storage, backups, and media streaming, the Asustor Drivestor 4 Gen 2 is a well-rounded home and small-office option. Its 2.5GbE networking, RAID support, and Btrfs snapshot features give it stronger data-management capabilities than a basic external drive enclosure.

Best For: Home users and small offices needing networked storage, automated backups, remote access, and 4K media serving.

Pros:

• Four bays support RAID 0/1/5/6/10 configurations for flexible capacity and redundancy.
• 2.5GbE networking can improve file transfers, backups, and media streaming over standard Gigabit Ethernet.
• Btrfs snapshots and WORM support add protection against accidental deletion and ransomware.
• Supports personal-cloud access, device synchronization, and 4K media playback.

Cons:

• It is diskless, so compatible drives must be purchased separately.
• The 1GB of DDR4 RAM is modest for demanding multitasking.
• It is a desktop NAS rather than a rackmount model.

The Drivestor 4 Gen 2 is a practical choice when you want NAS software features rather than simple direct-attached storage. Its combination of 2.5GbE, RAID flexibility, snapshots, and remote access makes it especially suitable for centralized household or small-business files.

Best for Everyday Use – Sabrent 4-Bay USB-C Dock

The Sabrent DS-SC4B is a useful alternative if you need a NAS enclosure with four bays but prefer direct-attached storage instead of a network operating system. It connects up to four 3.5-inch SATA drives to a computer over 10Gbps USB-C, with trayless hot-swap access and independent per-bay connections.

Best For: Users who want expandable, computer-connected JBOD storage for Windows, macOS, or Linux.

Pros:

• Holds up to four 3.5-inch SATA HDDs or SSDs, with stated capacity support up to 80TB.
• USB 3.1 Gen 2 Type-C connectivity provides transfer rates up to 10Gbps.
• Trayless hot-swap design, per-bay power switches, activity LEDs, and a locking key simplify drive management.
• Aluminum-and-metal housing with a 92mm fan supports continuous operation.

Cons:

• This is DAS JBOD, not a hardware RAID or network-attached NAS system.
• Hard drives are not included.
• It has a shorter one-year warranty unless extended through registration.

Choose the Sabrent when straightforward USB storage expansion matters more than remote access, RAID management, or a built-in NAS interface. Each drive is mounted individually, making this enclosure flexible for local storage workflows but less suitable as a standalone network server.

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

For a business or homelab that needs a NAS enclosure with four bays in a rack, the QNAP TS-464eU-8G-US offers a compact 1U short-depth design with business-ready connectivity. Its Intel quad-core processor, 8GB RAM, dual 2.5GbE ports, and M.2 slots are suited to heavier file-sharing and storage workloads.

Best For: Small teams, offices, and rack-based homelabs needing fast network storage and expansion options.

Pros:

• Short-depth 1U rackmount form factor fits space-constrained installations.
• Intel quad-core CPU with burst speeds up to 2.9GHz and 8GB RAM supports demanding workloads.
• Dual 2.5GbE ports accelerate file sharing and large transfers.
• Dual M.2 PCIe Gen 3 x1 slots support cache acceleration or SSD storage pools.

Cons:

• It is diskless, so storage drives must be added separately.
• Rack mounting may be excessive for users who only need a desktop NAS.
• HDMI output is limited to 4K at 30Hz.

The TS-464eU-8G-US is the strongest fit here for rack-based environments and performance-focused file sharing. Its dual 2.5GbE ports, generous memory, M.2 expansion, and USB 3.2 Gen 2 connectivity provide more headroom than a basic four-bay home unit.

Best Plug-and-Play Pick – CENMATE 4-Bay USB Enclosure

If you need a nas enclosure with four bays for straightforward external storage, this CENMATE model is a practical DAS option rather than a true NAS. It holds four 2.5- or 3.5-inch SATA HDDs or SSDs, supports up to 80TB total, and connects over USB 3.0 with both USB-A and USB-C cable support.

Best For: Individuals or businesses wanting a tool-free, hot-swappable four-drive enclosure for desktop or laptop storage.

Pros:

• Supports four 2.5- or 3.5-inch SATA drives and up to 80TB total capacity.
• USB 3.0 transfer speeds up to 5Gbps with USB-A/C connectivity.
• Aluminum construction, a built-in cooling fan, hot swapping, and tool-free drive installation.
• Compatible with Windows 7 and later, Mac 9.1 and later, and Linux.

Cons:

• It is a DAS enclosure and does not provide RAID or NAS functionality.
• The fan may produce approximately 40–50dB of noise.

This is a sensible choice when easy access to four drives matters more than network sharing or RAID protection. Its USB interface and broad operating-system compatibility keep setup simple, while the fan and aluminum chassis support sustained external-storage use.

Best DIY NAS Build – KCMconmey 4+1 Bay NAS Case

For builders assembling a network storage system from separate components, this 4+1 bay case offers the foundation for a nas enclosure with four bays. It supports a Mini-ITX motherboard, Flex or 1U power supply, four 2.5- or 3.5-inch drive trays, and an additional internal 2.5-inch bay.

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

Pros:

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

Cons:

• This is a bare case, so the motherboard, power supply, drives, and NAS software must be supplied separately.
• Component compatibility is limited to the listed Mini-ITX, power-supply, and single-slot PCIe specifications.

Unlike a ready-to-use external enclosure, this chassis is intended for hands-on system building. Its expansion-card support and extra internal bay add flexibility, but careful planning is necessary before purchasing compatible components.

Best RAID-Capable DAS – CENMATE 4-Bay RAID Enclosure

If you want a nas enclosure with four bays but primarily need local RAID storage, this CENMATE enclosure combines four-drive support with USB 3.0 and eSATA connectivity. It supports 2.5- and 3.5-inch SATA drives, up to 80TB total, and eight modes including RAID 0, 1, 3, 5, and 10, plus Clone, Large, and Normal.

Best For: Users who need configurable RAID or drive-cloning modes in a four-bay DAS enclosure connected to a compatible computer.

Pros:

• Offers eight storage modes, including RAID 0, 1, 3, 5, and 10.
• Supports four 2.5- or 3.5-inch drives and up to 80TB total capacity.
• Provides USB-A/C 3.0 and eSATA connectivity with speeds up to 5Gbps.
• Uses an aluminum enclosure with cooling fans and a 12V power adapter.

Cons:

• It is a DAS product, not a NAS, and hot swapping is not supported.
• Multiple bays over eSATA require a computer port with RAID functionality; otherwise, only one bay may be accessible.
• Changing RAID modes can cause data loss and requires a specific power-cycle and reset procedure.

This model suits buyers who want hardware-based storage modes without building a complete NAS server. Its RAID flexibility is useful, but the lack of hot swapping and the setup cautions make it better for deliberate, locally attached storage than frequent drive changes.

How We Picked the Best Nas Enclosure with Four Bays

We selected products that provide four drive bays or a closely related four-plus-one layout, then compared their intended use, connectivity, expansion potential, drive compatibility, cooling, and installation approach. The list includes complete NAS systems, diskless NAS units, direct-attached storage, RAID enclosures, and a DIY case because these categories solve different storage problems.

We also considered whether each design supports 2.5-inch and 3.5-inch SATA drives, hot swapping, hardware RAID, network services, rack installation, or high-speed USB-C. Confirm the exact drive, RAID, operating-system, and capacity limits before buying, since specifications can vary by configuration and firmware.

Quick Comparison

• Best for a full home or office cloud: Choose a network-attached NAS such as the QNAP, UGREEN, or ASUSTOR options.
• Best for simple desktop expansion: A USB-C DAS or RAID enclosure is easier to connect to one computer and generally requires less setup.
• Best for rack installations: The short-depth 1U QNAP is designed for compatible network cabinets and server environments.
• Best for customization: A DIY NAS case gives experienced builders control over the motherboard, processor, operating system, and power supply.

Key Buying Factors for a Nas Enclosure with Four Bays

NAS or DAS?

A Nas Enclosure with Four Bays connects to your network and can serve multiple users, manage backups, run applications, and provide remote access. A DAS connects directly to a computer over USB and is usually simpler, quieter to configure, and more affordable, but it does not independently provide the same network services.

Drive and RAID Support

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 three or more drives for a balance of capacity and redundancy. RAID is not a substitute for an external backup, especially for irreplaceable files.

Connectivity and Performance

Gigabit Ethernet can be sufficient for general backups, while 2.5GbE, 5GbE, or 10GbE is more useful for large media projects and multiple users. USB 3.0 is adequate for many storage tasks; USB 3.2 10Gbps can reduce transfer times when the host computer and drives support it.

Cooling, Noise, and Installation

Four active drives generate heat, so look for a controllable fan, ventilation, and accessible drive bays. Tool-free trays and hot-swap support make maintenance easier, while rackmount models require suitable cabinet depth and airflow. Remember to budget for drives if the enclosure is sold diskless.

Who Should Buy Which Nas Enclosure with Four Bays?

Choose a complete NAS if several people need shared folders, automated backups, media services, or remote access. Pick a USB-C RAID enclosure if one workstation needs dependable multi-drive storage without managing a separate network appliance. A rackmount NAS suits offices with existing server racks, and a DIY case is best for technically confident buyers who want maximum platform flexibility. For straightforward local storage on a modest budget, prioritize a well-cooled DAS with the ports your computer already supports.