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

A four-bay enclosure gives you room to combine capacity, redundancy, and future expansion without committing to a much larger rackmount system. The best choice depends on whether you need a complete network-attached server, a simple USB storage device, or a flexible DIY chassis.

Our roundup covers creator-focused NAS systems, diskless network appliances, direct-attached RAID enclosures, NVMe storage, and build-your-own options. Use the guide below to match performance, connectivity, drive support, and management features to your workflow.

Best 10 Nas Enclosure with Four Bays Picks for 2026

Best Performance NAS – UGREEN DXP4800 GT

The UGREEN DXP4800 GT is a performance-focused nas enclosure with four bays for creators, offices, and demanding home labs. Its Ryzen processor, expandable memory, dual 10GbE networking, SSD support, and broad software features make it suited to fast transfers, media work, backups, and self-hosted services.

Best For: Creators, technical users, and small teams that need fast networking and expandable workloads.

Pros:

• Ryzen R2514 processor, 8GB RAM expandable to 64GB, and support for Docker and virtual machines.
• Dual 10GbE ports, M.2 SSD support, 4K HDMI, USB ports, and a built-in SD card slot.
• Supports surveillance workflows, local privacy features, and up to 144TB of combined capacity.

Cons:

• Drives are not included.
• Some advanced networking benefits require compatible equipment.
• Its extensive feature set may be more than casual users need.

Choose the DXP4800 GT when transfer speed, application flexibility, and expansion matter more than keeping the setup minimal. It is a strong fit for a high-performance private storage hub.

Best NVMe Expansion – TERRAMASTER D4 SSD

The TERRAMASTER D4 SSD is a compact nas enclosure with four bays designed for four M.2 NVMe drives rather than traditional hard disks. With USB-C connectivity, up to 40Gbps bandwidth, active cooling, and tool-free drive access, it is a fast direct-attached option for editing and large file transfers.

Best For: Video editors and users who want portable, high-speed NVMe storage expansion.

Pros:

• Supports four M.2 NVMe 2280 SSDs with up to 32TB total capacity.
• 40Gbps USB-C connectivity and claimed speeds up to 3,224MB/s with four SSDs.
• Tool-free installation, hot-swapping, temperature-controlled cooling, and wide device compatibility.

Cons:

• No built-in RAID; drives operate individually unless software RAID is used.
• NVMe SSDs are not included.
• Its capacity is lower than some four-bay HDD enclosures.

This enclosure is best viewed as high-speed external storage, not a full standalone NAS. It makes sense when NVMe performance and a compact footprint are more important than hardware RAID or network-native access.

Best Beginner NAS – Yxk Zero1 Pro

The Yxk Zero1 Pro is a beginner-friendly nas enclosure with four bays for family backups, home media, and small-office file sharing. Its Intel N100 platform, 8GB of RAM, dual 2.5GbE ports, RAID support, and guided setup provide a practical starting point for a private cloud.

Best For: Families and first-time NAS buyers who want shared storage, photo organization, and home-server flexibility.

Pros:

• Guided mobile setup and remote access without subscription-based storage tiers.
• Four SATA bays support RAID 0, 1, or 5, with up to 144TB raw combined capacity.
• Intel N100, dual 2.5GbE, 4K HDMI, Docker support, and two M.2 NVMe slots.

Cons:

• Drives are sold separately.
• Remote access and transfer performance depend on the network and supported software.
• Manual installation of alternative operating systems may require additional technical work.

The Zero1 Pro balances accessible setup with useful room to grow. It is a sensible choice for household backups and media projects, while its x86 platform leaves options open for more advanced users.

Best DAS Enclosure – SABRENT DS-SC4B

The SABRENT DS-SC4B is a straightforward nas enclosure with four bays for direct-attached storage over USB-C. It accepts four 3.5-inch SATA drives, offers trayless hot-swapping and per-bay controls, and suits users who want multi-drive access without a networked NAS operating system.

Best For: Desktop users who need simple, high-capacity JBOD storage for Windows, macOS, or Linux.

Pros:

• Four independent drive connections for 3.5-inch SATA HDDs or SSDs.
• 10Gbps USB-C, trayless hot-swap access, individual power switches, and activity LEDs.
• Aluminum-and-metal housing with a 92mm fan and 100–240V power adapter.

Cons:

• It is JBOD direct-attached storage, not hardware RAID.
• Drives are not included.
• It requires a host computer and USB connection rather than operating as a standalone NAS.

The DS-SC4B is a good fit when simple drive expansion is the priority. Choose it over a true NAS when you prefer local USB access and can manage protection or pooling through the host system.

Performance Pick – TerraMaster F4-424 Pro

If you need a nas enclosure with four bays for demanding home-lab or small-business workloads, the TerraMaster F4-424 Pro stands out for its Core i3-N305 processor, 32GB of DDR5 memory, and dual 2.5GbE ports. It is a diskless NAS enclosure with M.2 NVMe slots for caching and support for several RAID configurations.

Best For: Small and medium-sized businesses, multi-user file access, databases, and high-load applications.

Pros:

• Powerful 8-core CPU and 32GB DDR5 memory for demanding applications.
• Dual 2.5GbE ports support link aggregation and high-concurrency transfers.
• Two M.2 NVMe slots, broad RAID support, and tool-free drive trays.
• Multiple backup applications and added sound-absorbing measures.

Cons:

• Memory is non-ECC and non-upgradable.
• Drives are not included.
• Its performance-focused hardware may be more than basic storage users need.

The F4-424 Pro is the strongest option here when application performance and network throughput matter more than keeping the system simple. Its fixed 32GB memory and diskless configuration should be considered before purchase.

Versatile Direct-Attached Storage – WAVLINK Quad-Bay Enclosure

For buyers seeking a nas enclosure with four bays that connects directly to a computer, the WAVLINK enclosure supports both 3.5-inch and 2.5-inch SATA drives. Its USB-C 3.2 connection, HDMI output, aluminum shell, and temperature-controlled fans make it a flexible desktop storage hub rather than a networked NAS.

Best For: Desktop users who want expandable direct-attached storage, fast USB-C transfers, and added display connectivity.

Pros:

• Four SATA bays support up to four 32TB drives, according to the supplied specifications.
• USB 3.2 Type-C offers transfer rates up to 10Gbps.
• Includes HDMI output up to 4K at 60Hz when the host supports video output.
• Independent bay power switches, hot-swappable design, and automatic fan control.

Cons:

• It is direct-attached storage, not a standalone network NAS.
• 2.5-inch drives require separate mounting brackets.
• HDMI requires a compatible host USB-C video connection and USB-C-to-C cable.

This WAVLINK model is a practical choice when you want four-bay expansion without managing a network operating system. Choose it for computer-connected storage and media connectivity, not NAS applications or remote network access.

RAID Expansion Pick – QNAP TR-004

The QNAP TR-004 is a straightforward nas enclosure with four bays for direct-attached storage or QNAP NAS capacity expansion. It connects over USB Type-C, supports hardware RAID 0, 1, 5, JBOD, and individual disks, and includes lockable drive bays. It ships diskless with four 3.5-inch SATA bays.

Best For: Users who need external RAID storage for Windows, macOS, or Linux, or a backup and expansion enclosure for a compatible QNAP NAS.

Pros:

• Hardware RAID supports RAID 0, 1, 5, JBOD, and individual disks.
• Works as external storage with Windows, macOS, and Linux.
• Lockable drive bays and included USB Type-C-to-Type-A cable.
• Can expand compatible QNAP NAS storage or serve as a NAS backup device.

Cons:

• It is a USB direct-attached storage device rather than a standalone NAS.
• Compatibility limitations apply to certain older QNAP NAS models.
• NAS applications cannot be installed on the TR-004, and drives cannot be freely migrated between unrelated devices.

The TR-004 is a sensible, focused enclosure for hardware RAID and USB-connected storage. Verify QNAP compatibility and understand its drive-migration limitations before using it as part of a NAS expansion plan.

Flexible RAID Storage – MAIWO 4-Bay RAID Enclosure

If you need a nas enclosure with four bays for large 3.5-inch SATA drives, the MAIWO 4 Bay RAID Enclosure offers flexible storage configurations in a desktop DAS design. It supports up to four drives, USB-C connectivity up to 5Gbps, and a stated maximum capacity of 96TB.

Best For: Professionals, businesses, and power users who need configurable RAID storage for backups, media libraries, surveillance systems, or workstation use.

Pros:

• Supports eight modes, including RAID 0, 1/10, 3, 5, Clone, Large/JBOD, and Normal.
• Holds up to four 24TB 3.5-inch SATA drives for a stated 96TB maximum capacity.
• Includes USB-A to USB-C and USB-C to USB-C cables, plus LED drive-status indicators.
• Two switch-controlled cooling fans help manage drive temperatures.

Cons:

• Designed for 3.5-inch SATA hard drives rather than a mix of drive sizes.
• RAID enclosure operation depends on selecting and managing the desired RAID mode.
• The supplied warranty terms place some return-shipping and packaging responsibilities on the customer.

The MAIWO stands out when RAID flexibility and high-capacity 3.5-inch storage matter most. Its aluminum casing, included cables, and active cooling make it a practical option for a multi-drive desktop setup.

DIY NAS Build – KCMconmey 4+1 Bay NAS Case

For builders who want a nas enclosure with four bays and room for a custom system, the KCMconmey 4+1 Bay DIY NAS Case provides a compact chassis for a Mini ITX motherboard. It combines four 2.5- or 3.5-inch drive trays with one additional internal 2.5-inch bay.

Best For: DIY NAS and private-cloud projects using a Mini ITX motherboard, Flex or 1U power supply, and optional single-slot PCIe expansion card.

Pros:

• Supports four 2.5- or 3.5-inch drive trays plus one internal 2.5-inch bay.
• Compatible with Mini ITX motherboards measuring 6.7 by 6.7 inches.
• Supports 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 DIY case, so the motherboard, drives, power supply, and other components are not listed as included.
• Component compatibility is limited to the specified Mini ITX, Flex/1U PSU, and single-slot PCIe formats.
• The enclosure has a maximum stated weight capacity of 14.3 pounds.

Unlike a ready-to-use external RAID enclosure, this KCMconmey case is a foundation for a customized NAS build. Its extra internal 2.5-inch bay and PCIe support add flexibility, provided your chosen components fit the compact layout.

Versatile External RAID – CENMATE Aluminum 4-Bay RAID Enclosure

The CENMATE is a nas enclosure with four bays aimed at external storage rather than a complete network-attached system. Its aluminum chassis accepts 2.5- and 3.5-inch SATA HDDs or SSDs, connects through USB 3.0 or eSATA, and supports up to 80TB across four drives.

Best For: Users who want a multi-drive external DAS for Windows, Mac, or Linux systems and need multiple RAID modes in a compact enclosure.

Pros:

• Supports four 2.5- or 3.5-inch SATA HDDs or SSDs, with a stated capacity up to 80TB.
• Offers RAID 0, 1, 3, 5, 10, Clone, Large, and Normal modes.
• Includes USB-A/C 3.0 and eSATA cables and supports transfer speeds up to 5Gbps.
• Aluminum construction and two built-in fans help with heat management.

Cons:

• It is explicitly a DAS, not a NAS, so network-attached functionality is not included.
• Hot-swapping is not supported.
• Fan noise is stated at approximately 40–50 decibels, and eSATA multi-bay access requires computer-side RAID support.

CENMATE is a useful choice for direct-attached, mixed-size SATA storage with broad RAID options. Buyers should account for its manual RAID-mode switching procedure, lack of hot swap, and stated fan noise before choosing it for a quiet workspace.

How We Picked the Best Nas Enclosure with Four Bays

We selected products across the main categories buyers compare: full NAS appliances, USB or eSATA direct-attached storage, RAID enclosures, NVMe systems, and DIY cases. We considered drive compatibility, connection speed, processor and memory specifications, RAID support, cooling, expandability, installation requirements, and the practical difference between network storage and storage connected directly to one computer.

Because these products serve different purposes, the “best” option is not necessarily the fastest or most expensive. A simple DAS can be a better fit for local backups, while a true NAS is more suitable for shared files, remote access, media services, and multiple users.

Quick Comparison

• Best for a complete NAS experience: Choose a system with its own processor, memory, operating system, Ethernet, and app ecosystem.
• Best for local storage expansion: USB-C DAS models are usually simpler to configure and work well with a desktop or laptop.
• Best for high-speed solid-state storage: NVMe enclosures can deliver strong throughput, but drive temperature and host compatibility matter.
• Best for customization: DIY cases let you choose the motherboard, operating system, processor, and storage controller.
• Best for hardware RAID simplicity: A dedicated RAID enclosure can provide straightforward storage modes without managing a full NAS platform.

Key Buying Factors for a Nas Enclosure with Four Bays

NAS or DAS Connection

A NAS connects to your network through Ethernet and can serve several devices independently. A DAS connects directly through USB or eSATA and is generally simpler, but it depends on the attached computer for access and management. Confirm whether the product includes a NAS operating system or is diskless hardware only.

Drive Type and Capacity

Check whether the bays accept 3.5-inch hard drives, 2.5-inch SATA SSDs, M.2 NVMe drives, or a combination. Verify the stated maximum capacity, but remember that usable RAID capacity is lower than the total installed capacity.

RAID and Data Protection

RAID 1 protects against a single drive failure but sacrifices half of the raw capacity. RAID 5 can provide a balance of capacity and redundancy when supported, while RAID 0 improves aggregate performance without fault tolerance. RAID is not a backup, so keep a separate copy of important files.

Networking, Ports, and Performance

For a network appliance, compare 1GbE, 2.5GbE, and faster Ethernet options. For a DAS, inspect USB generation, connector type, and whether your computer supports the advertised speed. CPU, memory, cooling, and software optimization also affect real-world transfers and multitasking.

Who Should Buy Which Nas Enclosure with Four Bays?

Choose a full NAS if you want shared folders, automated backups, user accounts, media services, or remote access. Choose a USB or eSATA enclosure if you mainly need large local storage, simple backups, or a drive dock for one workstation. Choose an NVMe enclosure for compact, quiet, high-speed solid-state storage, provided your host supports the required interface. Choose a DIY case if you value control over components and are comfortable configuring hardware and software yourself.

Before buying, confirm included accessories, diskless status, operating-system support, RAID migration options, fan noise, and warranty coverage. Those details often matter more than peak interface speed when a four-bay system will run continuously.