10 Best NAS Enclosures With Four Bays in 2026 for Home, Business, and Backup

A four-bay enclosure gives you room to combine multiple drives for larger 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 enclosure for creative and business workflows.

We compared 10 four-bay options across performance, expansion, RAID support, connectivity, management features, and ease of use so you can choose a setup that fits your data, budget, and technical experience.

Best 10 Nas Enclosure with Four Bays Picks for 2026

Best All-Around Choice – Synology DS423

If you want a dependable nas enclosure with four bays for home or small-business file storage, the Synology DS423 focuses on secure sharing, backups, and straightforward management. It is diskless, so you will need to add compatible drives separately.

Best For: Families, home offices, and small teams that prioritize private cloud storage, backups, and easy file sharing.

Pros:

• Supports private file sharing, team folders, and permission controls.
• Offers snapshots, versioned files, and multi-destination backups for stronger data protection.
• Includes surveillance tools for up to 30 IP cameras, with camera licenses purchased separately.
• Backed by a 2-year warranty and ongoing software updates.

Cons:

• Drives are not included.
• Additional camera licenses are required for surveillance use.

The DS423 is a practical choice when software-supported backups and collaboration matter more than headline hardware specifications. Its compact tabletop design also suits home and office environments.

Best Performance Value – UGREEN DXP4800 Plus

The UGREEN DXP4800 Plus is a feature-rich nas enclosure with four bays for families, creators, and small teams. Its Intel 5-core processor, 8GB of DDR5 memory, 10GbE connectivity, and virtualization support make it suited to demanding storage and collaboration tasks.

Best For: Users who want fast network transfers, centralized backups, Docker or virtual machine support, and cross-platform access.

Pros:

• Provides 10GbE and 10Gbps USB connectivity for high-speed transfers.
• Supports up to 144TB with compatible drives and offers multiple RAID options.
• Includes 8GB DDR5 RAM, a 128GB SSD, 4K HDMI, and an Intel 5-core CPU.
• Offers private-cloud encryption and AI-powered photo organization.

Cons:

• Hard drives are not included.
• It uses wired Ethernet rather than Wi-Fi.
• Actual speeds depend on the network, drives, processor, and file sizes.

Choose this model if you need more performance and flexibility than a basic file server provides. It is especially appealing for users planning Docker, virtual machines, or fast multi-device workflows.

Best Direct-Attached Option – QNAP TR-004

The QNAP TR-004 is a different kind of nas enclosure with four bays: it is a USB-C direct-attached storage unit rather than a standalone network NAS. It connects to Windows, macOS, or Linux computers and provides hardware RAID for local storage or NAS expansion.

Best For: Buyers who need expandable USB storage, a local RAID enclosure, or a backup target for a compatible QNAP NAS.

Pros:

• Supports RAID 0, 1, 5, JBOD, and individual-disk configurations.
• Connects through USB Type-C and includes a Type-C-to-Type-A cable.
• Uses four 3.5-inch SATA bays with lockable drive trays.
• Can serve as external storage or expand a compatible QNAP NAS.

Cons:

• It is direct-attached storage, not a standalone network NAS.
• Drives are not included.
• NAS applications cannot be installed on the enclosure, and compatibility limitations apply to some QNAP models.

The TR-004 makes sense when you want simple USB-connected capacity and hardware RAID rather than remote NAS services. Verify QNAP compatibility before using it as a NAS expansion unit.

Best for Power Users – UGREEN DXP4800 Pro

For demanding workloads, the UGREEN DXP4800 Pro is a high-performance nas enclosure with four bays built around an Intel Core i3-1315U, expandable DDR5 memory, and dual high-speed networking. It combines four drive bays with two M.2 PCIe 4.0 slots for cache or additional storage.

Best For: IT professionals, developers, video editors, and power users running virtual machines, Docker containers, or fast collaborative workloads.

Pros:

• Uses a 6-core, 8-thread Intel processor with up to 4.5GHz turbo speed.
• Includes 8GB DDR5 RAM expandable to 96GB and dual 10GbE/2.5GbE networking.
• Supports Docker, virtual machines, RAID 0/1/5/10, and on-device AI photo organization.
• Offers two M.2 PCIe 4.0 slots plus tool-free drive trays and multi-zone cooling.

Cons:

• Hard drives are not included.
• Its advanced hardware may be more than basic file-sharing users need.
• Advertised capacity depends on the installed drive configuration.

The DXP4800 Pro is the strongest fit here for users building a flexible home lab or small-business platform. Its expandable memory, fast networking, and virtualization features provide room for demanding workloads.

Best DAS Alternative – TerraMaster D4-320

If you need a nas enclosure with four bays but do not require networking, the TerraMaster D4-320 is a fast direct-attached storage alternative. Its USB 3.2 Gen 2 connection supports up to 10Gbps, while four independent drive bays provide substantial local storage expansion.

Best For: Users who want a quiet, plug-and-play four-drive enclosure connected directly to a Mac, Windows, or Linux computer.

Pros:

• USB 3.2 Gen 2 Type-C connectivity with up to 10Gbps transfer rates.
• Supports four 3.5-inch or 2.5-inch SATA drives, with up to 120TB total capacity.
• Tool-free trays, hot swapping, and temperature-controlled cooling fan.

Cons:

• This is a DAS enclosure, not a network-attached storage device.
• It does not provide RAID functionality; the four disks operate independently.

The D4-320 is a practical choice for direct storage expansion and fast local file transfers. Choose it over a true NAS only if network access and built-in RAID are not priorities.

Best True NAS – QNAP TS-464-8G-US

For shoppers specifically seeking a nas enclosure with four bays, the QNAP TS-464-8G-US is the most complete network-storage option here. It combines four SATA drive bays with a quad-core Intel processor, 8GB of DDR4 memory, and dual 2.5GbE ports for network file sharing.

Best For: Families, home users, and small teams that need centralized network storage for photos, videos, music, and large files.

Pros:

• Four-bay desktop NAS design with hot-swappable drive support.
• Dual 2.5GbE ports accelerate file sharing and large transfers.
• Two M.2 PCIe Gen3x2 slots support cache acceleration or SSD storage pools.
• 8GB DDR4 RAM and a quad-core Intel processor support everyday NAS workloads.

Cons:

• Network performance depends on compatible 2.5GbE networking equipment.
• Unlike the external enclosures listed here, it is a dedicated NAS system rather than a simple USB enclosure.

The TS-464-8G-US is the strongest fit when remote or shared access matters. Its networking, memory, and expansion options make it more versatile than a basic direct-attached four-bay enclosure.

Best Multimedia Enclosure – WAVLINK RapidFire H4

The WAVLINK RapidFire H4 is a flexible choice for shoppers comparing a nas enclosure with four bays and a USB-connected storage dock. It offers four SATA bays, 10Gbps USB-C, an extra USB-C port, and HDMI output up to 4K at 60Hz when the host supports video output.

Best For: Desktop users who want expandable local storage alongside peripheral connectivity and a high-resolution display option.

Pros:

• Four bays support both 3.5-inch and 2.5-inch SATA HDDs and SSDs.
• USB 3.2 Type-C delivers transfer rates up to 10Gbps.
• HDMI supports up to 4K at 60Hz with a compatible host USB-C video connection.
• Aluminum construction, dual temperature-controlled fans, and independent bay power switches.

Cons:

• It is a USB enclosure, not a true network-attached storage system.
• 2.5-inch drives require separate 2.5-to-3.5-inch mounting brackets.
• HDMI output requires host USB-C video support and a USB-C-to-C cable.

The RapidFire H4 stands out when storage expansion and desktop connectivity are equally important. Its display and peripheral features add flexibility, but users seeking network sharing should choose a dedicated NAS instead.

Best Beginner NAS – UGREEN NAS DH4300 Plus

For shoppers seeking a nas enclosure with four bays for private home storage, the UGREEN NAS DH4300 Plus combines beginner-friendly setup with remote file access, automatic backups, and support for Docker. It includes 8GB LPDDR4X RAM, a 2.5GbE port, and 4K HDMI output, but storage disks are not included.

Best For: Families, home users, and remote workers building a private cloud and organizing large photo libraries.

Pros:

• AI-powered photo albums support recognition, semantic search, and duplicate-photo removal.
• Works across Windows, macOS, Android, iOS, web browsers, and smart TVs.
• Offers 2.5GbE networking, 8GB RAM, Docker support, and 4K HDMI output.
• Supports up to 128TB of storage and local data control without recurring cloud fees.

Cons:

• Storage disks must be purchased separately.
• Supports Docker but not virtual machines.
• Its broad feature set may be more than needed for basic file storage.

The DH4300 Plus is a strong fit when ease of use, photo management, and private remote access matter more than advanced virtualization. Its hardware also leaves room for growing media and backup collections.

Best RAID Expansion Enclosure – ORICO 4-Bay RAID Enclosure

The ORICO 9848RU3 is a practical nas enclosure with four bays for users who need expandable direct-attached storage rather than a full network NAS. It supports four 3.5-inch SATA drives, eight RAID modes, USB 3.0 connectivity, and up to 88TB of total capacity.

Best For: Desktop users managing large projects, video files, backups, or multi-drive storage through Windows, macOS, or Linux.

Pros:

• Supports RAID 0, 1, 3, 5, 10, JBOD, CLONE, and CLEAR configurations.
• Accepts four 3.5-inch drives up to 22TB each, for a stated maximum of 88TB.
• USB 3.0 and SATA 6Gbps support can reach up to 235MB/s according to the supplied specifications.
• Aluminum construction, an 80mm cooling fan, front and rear vents, and a 150W power supply support sustained use.

Cons:

• This is a direct-attached enclosure, not a network NAS with built-in remote access.
• It supports 3.5-inch SATA disks rather than the smaller 2.5-inch form factor.
• Drives are not listed as included in the supplied package contents.

Choose the ORICO when flexible RAID options and high-capacity desktop expansion are the priority. Its USB connection keeps installation straightforward, while the cooling design helps support multi-drive operation.

Best DAS Compatibility – CENMATE 4-Bay RAID Enclosure

The CENMATE 4-Bay RAID enclosure is a nas enclosure with four bays only in the broad storage-enclosure sense; the manufacturer explicitly identifies it as DAS, not NAS. It supports both 2.5- and 3.5-inch SATA HDDs and SSDs, USB A/C 3.0, eSATA, eight RAID modes, and up to 80TB.

Best For: Users who want a flexible, locally connected RAID enclosure for Windows, Mac, or Linux systems.

Pros:

• Supports both 2.5-inch and 3.5-inch SATA HDDs and SSDs.
• Offers RAID 0, 1, 3, 5, 10, CLONE, LARGE, and NORMAL modes.
• Includes USB A/C 3.0 and eSATA cables for flexible connections.
• Aluminum construction, dual fans, and a 12V power adapter support multi-drive operation.

Cons:

• It is a DAS enclosure, not a network-attached NAS.
• Hot-swapping is not supported.
• The fans are rated around 40–50 decibels, which may be noticeable in quiet spaces.

The CENMATE is worth considering if drive-size flexibility and multiple RAID choices matter more than network access. Check your computer’s eSATA RAID support before relying on that connection for all four bays.

How We Picked the Best Nas Enclosure with Four Bays

We focused on how each enclosure works in real home, creator, and small-business environments. The selection includes full NAS systems with network services, direct-attached storage enclosures for simpler computer-based storage, and flexible RAID boxes for backups or media libraries.

Our comparison emphasizes drive compatibility, RAID options, network or USB performance, cooling, operating-system support, expansion potential, and setup requirements. Diskless models also require separate hard drives or SSDs, so buyers should include drive cost and intended workload in the total budget.

Quick Comparison

• Best for a complete NAS experience: Synology, QNAP, and UGREEN NAS models offer network file sharing, user management, backups, and additional applications.
• Best for straightforward external storage: QNAP, TERRAMASTER, WAVLINK, ORICO, and CENMATE models connect directly to a computer without requiring a full NAS operating system.
• Best for demanding users: Look for faster networking, stronger processors, more memory, container or virtualization support, and flexible storage management.
• Best for beginners: Prioritize simple installation, clear software, automatic backups, and dependable cooling over maximum expansion features.

Key Buying Factors for a Nas Enclosure with Four Bays

NAS or DAS?

A NAS connects to your network and can serve multiple computers, phones, users, and applications simultaneously. A DAS usually connects directly over USB or eSATA and is often simpler, less expensive, and faster for a single workstation. Choose NAS for shared access and remote services; choose DAS for local backups, editing, or expanded desktop storage.

Drive and RAID Support

Check whether the enclosure accepts 3.5-inch hard drives, 2.5-inch drives, SATA SSDs, or a combination. RAID 1 protects against a single drive failure, while RAID 5 can provide a balance of capacity and redundancy with four drives. RAID is not a substitute for an independent backup, particularly for accidental deletion, theft, or ransomware.

Connectivity and Performance

Gigabit Ethernet is adequate for basic backups and document sharing, while 2.5GbE or faster networking can significantly improve large file transfers when the rest of your network supports it. USB 3.x and USB-C matter most for DAS use, but advertised link speeds are theoretical and depend on the drives, cables, host computer, and workload.

Software, Cooling, and Expansion

Review the management software, mobile access, backup tools, surveillance support, and update policy before buying. A quiet, temperature-controlled fan can help protect drives during sustained transfers. Also confirm maximum supported capacity and whether the enclosure can be expanded later.

Who Should Buy Which Nas Enclosure with Four Bays?

Home users and remote workers should choose an easy-to-manage NAS or a simple USB enclosure based on whether they need network-wide access. Photographers, video editors, and creators should favor faster networking or USB-C, strong cooling, and enough capacity for large project files. Small teams will benefit from user permissions, scheduled backups, snapshots, and reliable remote access. IT professionals and power users should look for higher performance, expandable applications, virtualization or container support, and detailed storage controls.

Before purchasing, verify drive compatibility, included cables, network requirements, warranty coverage, and whether disks are included. A carefully matched four-bay enclosure can provide a practical foundation for resilient storage without forcing you into a single upgrade path.