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

A four-bay storage enclosure gives you more room to balance capacity, redundancy, performance, and future upgrades than a typical two-bay system. The right choice depends on whether you need a full network-attached server, a simple USB storage box, or a flexible RAID enclosure.

We compare 10 four-bay options across smart NAS platforms, direct-attached storage, hardware RAID, connectivity, expansion potential, and ease of use so you can choose the best fit for your data and workflow.

Best 10 Nas Enclosure with Four Bays Picks for 2026

High-Speed Private Cloud – UGREEN DXP4800 Plus

The UGREEN DXP4800 Plus is a capable nas enclosure with four bays for families, creators, and small teams that need centralized storage, automated backups, and fast file transfers. Its 10GbE and 2.5GbE networking, 8GB DDR5 memory, Docker and virtual-machine support, and 4K HDMI output make it more versatile than a basic file server. Drives are not included.

Best For: Users who want a fast private cloud with media, collaboration, and self-hosting features.

Pros:

• 10GbE networking and 10Gbps USB support fast transfers.
• Supports RAID, remote access, automated backups, Docker, and virtual machines.
• AI-powered photo organization can recognize content and remove duplicates.
• Up to 144TB capacity with compatible third-party drives.

Cons:

• Hard drives or SSDs must be purchased separately.
• Actual speeds depend on the network, drives, processor, and file sizes.
• Wired Ethernet is required; Wi-Fi is not supported.

The DXP4800 Plus is a strong all-around choice when speed and flexible applications matter. Its extensive feature set may be more than needed for simple backups, but it gives growing households and small teams room to expand.

Reliable Business Storage – Synology DS925+

The Synology DS925+ is a practical nas enclosure with four bays for users who want dependable file management, backups, photo organization, virtualization, and surveillance tools in one system. It is sold diskless, supports drives on Synology’s official compatibility list, and provides dual 2.5GbE ports for fast, redundant networking.

Best For: Homes and small offices that value Synology’s integrated storage and data-protection software.

Pros:

• Supports sequential read/write throughput of up to 522/565 MB/s.
• Dual 2.5GbE ports provide faster transfers and network redundancy.
• Built-in tools cover files, photos, data protection, virtualization, and surveillance.
• Includes a three-year limited hardware warranty.

Cons:

• Drives are not included.
• Compatible drives should be selected from the official list.
• It lacks the faster 10GbE connectivity offered by some competing four-bay models.

The DS925+ is best suited to buyers who prefer a polished, software-focused NAS experience rather than maximum raw connectivity. Its dual 2.5GbE setup and broad built-in applications make it a sensible small-office option.

Creator and Office Powerhouse – UGREEN DXP4800 GT

The UGREEN DXP4800 GT is a high-performance nas enclosure with four bays designed for creators, technical users, and office teams. Its Ryzen processor, expandable memory, dual 10GbE ports, SSD expansion, SD card slot, and 4K HDMI make it suitable for demanding media, backup, self-hosting, and surveillance workflows. Storage drives are sold separately.

Best For: Creators and advanced users handling large media files, multi-user workloads, or local surveillance.

Pros:

• Four-core, eight-thread Ryzen processor with 8GB RAM expandable to 64GB.
• Dual 10GbE ports can provide high aggregate bandwidth with compatible equipment.
• Supports Docker, virtual machines, Plex, Emby, Jellyfin, and other self-hosted services.
• Built-in SD backup, surveillance tools, 4K HDMI, and multiple USB ports.

Cons:

• Hard drives and SSDs are not included.
• Full networking performance requires compatible 10GbE equipment.
• The broad feature set may be excessive for basic file storage.

The DXP4800 GT stands out when a four-bay NAS must also serve as a media workstation, application host, and camera-recording hub. It costs complexity in exchange for unusually strong expansion and connectivity.

Simple RAID Expansion – QNAP TR-004

The QNAP TR-004 is a straightforward nas enclosure with four bays, but it is a direct-attached storage device rather than a standalone network NAS. It connects over USB Type-C to Windows, macOS, or Linux computers and supports hardware RAID 0, 1, 5, JBOD, and individual-disk modes. It can also expand or back up a compatible QNAP NAS.

Best For: Users who need affordable local RAID storage or extra capacity for a computer or compatible QNAP NAS.

Pros:

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

Cons:

• It is not a standalone NAS and does not run NAS applications.
• Storage pools or volumes cannot be combined with the connected NAS.
• Compatibility and drive-migration limitations apply with certain QNAP systems.

The TR-004 is a good fit when you want simple, hardware-managed RAID without paying for a full network operating system. Choose a true NAS instead if you need remote access, apps, or centralized network services without a host computer.

Best Overall – Asustor Drivestor 4 Pro Gen2

The Asustor Drivestor 4 Pro Gen2 is a capable nas enclosure with four bays for home storage, backups, media streaming, and private-cloud access. Its 2.5GbE connection, RAID support, and tool-free bays make it a flexible choice for households and small offices.

Best For: Home users and small offices that want flexible RAID storage and faster-than-Gigabit networking.

Pros:

• 2.5GbE connectivity can improve file transfers and backups.
• Supports RAID 0, 1, 5, 6, and JBOD configurations.
• Quad-core processor and 2GB DDR4 memory support multitasking.
• Tool-free bays simplify drive installation and replacement.

Cons:

• Storage drives are not specified as included in the supplied notes.
• Its 1.7GHz Realtek processor is aimed at home and small-office workloads rather than demanding server tasks.

With RAID flexibility and 2.5GbE networking, this Asustor is a well-rounded four-bay NAS for buyers building a private home cloud or backup system.

Best DAS Alternative – TerraMaster D4-320

The TerraMaster D4-320 is a four-bay drive enclosure, but it is a DAS rather than a NAS. It connects directly to a computer over USB 3.2 Gen2, making it useful when you want high-speed local storage without network-based NAS features.

Best For: Users who need direct-attached, multi-drive storage for Windows, Mac, or Linux computers.

Pros:

• USB 3.2 Gen2 Type-C supports data rates up to 10Gbps.
• Supports four individual disks and capacities up to 30TB per drive, according to the supplied notes.
• Hot-swappable, tool-free trays simplify drive management.
• Temperature-controlled cooling and sound-dampening measures help reduce noise.

Cons:

• It is not a NAS and does not provide network-based remote access or private-cloud features.
• No RAID function is included.
• It is diskless, so drives must be purchased separately.

This enclosure is a strong fit for direct USB storage and fast local transfers, but shoppers specifically seeking a nas enclosure with four bays should choose a true network-attached model instead.

Best for Beginners – UGREEN NAS DH4300 Plus

The UGREEN NAS DH4300 Plus is a beginner-oriented nas enclosure with four bays for private storage, media, backups, and remote access. Its 8GB LPDDR4X RAM, 2.5GbE port, guided setup, and photo-management tools make it approachable for home users and remote workers.

Best For: Beginners and families who want private cloud storage with automatic photo backup and cross-platform access.

Pros:

• 8GB LPDDR4X RAM and a 2.5GbE port support responsive multitasking and transfers.
• AI-powered photo albums offer recognition, semantic search, and duplicate removal.
• Supports access from Windows, macOS, Android, iOS, web browsers, and smart TVs.
• Supports Docker and provides 4K HDMI video output.

Cons:

• Storage disks are not included.
• It supports Docker but not virtual machines.
• Some advanced photo features may be more than basic file-storage users need.

For households moving away from recurring cloud fees, the DH4300 Plus combines beginner-friendly setup with substantial memory, remote access, and automated photo organization.

Flexible Direct-Attached Storage – WAVLINK 4-Bay USB-C Enclosure

WAVLINK 4-Bay Hard Drive Enclosure for 3.5" and 2.5'' SATA HDD/SSD Featuring 10Gbps USB-C 3.2, Max 128TB Capacity, Built-in Temp-Controlled Cooling Fans, 4K HDMI Stunning Video Output, Aluminum Shell

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If you need a nas enclosure with four bays for fast local storage expansion, the WAVLINK offers four SATA 6Gbps bays for 3.5-inch or 2.5-inch drives. Its USB-C 3.2 connection reaches up to 10Gbps, while HDMI and an extra USB-C port add workstation flexibility.

Best For: Users who want a versatile four-drive desktop enclosure for high-speed storage, media projects, or game libraries.

Pros:

• Supports four 3.5-inch or 2.5-inch SATA HDDs or SSDs, with capacity up to 128TB.
• USB-C 3.2 provides data transfer speeds up to 10Gbps.
• Temperature-controlled fans, an aluminum shell, and independent bay power switches support convenient operation.
• HDMI supports up to 4K at 60Hz when the host USB-C port supports video output.

Cons:

• 2.5-inch drives require separate mounting brackets.
• HDMI video output depends on a compatible host USB-C port and USB-C-to-C connection.
• This is a direct-attached enclosure rather than a standalone network NAS.

The WAVLINK is a strong choice when speed, drive-format flexibility, and added display connectivity matter more than built-in network services. It is best suited to a computer-based storage setup.

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Networked Multimedia Storage – TERRAMASTER F4-425 4-Bay NAS

TERRAMASTER F4-425 4-Bay NAS Intel x86 Quad-Core CPU 4GB RAM (Diskless) | 2.5GbE LAN, Network Attached Storage Multimedia Server for Home Users (Diskless)

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For shoppers seeking a nas enclosure with four bays and full network functionality, the TERRAMASTER F4-425 combines an Intel x86 quad-core processor, 4GB of RAM, and 2.5GbE networking. It is designed for centralized files, media streaming, backups, and multi-user access.

Best For: Homes and small teams that need a quiet, diskless NAS for media serving, photo organization, synchronization, and shared storage.

Pros:

• Intel x86 quad-core processing and 4GB RAM support multitasking and 4K transcoding.
• 2.5GbE networking enables faster transfers and concurrent user access.
• Supports Plex, Emby, Jellyfin, DLNA, mobile backups, and AI-assisted photo organization.
• Tool-free push-lock trays, TRAID/TRAID+, and support for up to 120TB add convenience and flexibility.

Cons:

• Drives are not included, so the system requires a separate disk investment.
• Plastic construction may feel less premium than an aluminum enclosure.
• Its advanced services may be more than needed for simple local USB storage.

The F4-425 is the most complete network storage option in this group. Its quiet operation, mobile management, and broad media and synchronization features make it a practical home NAS platform once drives are installed.

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RAID-Focused Expansion – ORICO 4-Bay RAID Enclosure

ORICO 4 Bay Raid Hard Drive Enclosure Support 8 RAID Modes for 3.5inch HDD Max up to 88TB for External Direct Attached Storage, Efficient Expansion Backup(Alluminum Alloy)-9848RU3

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The ORICO 9848RU3 is a practical nas enclosure with four bays for users who want configurable RAID protection in a direct-attached setup. It supports eight modes, including RAID 0, 1, 3, 5, 10, JBOD, CLONE, and CLEAR, with USB 3.0 connectivity for computer-based backups and expansion.

Best For: Users who prioritize flexible RAID configurations, large-capacity local backups, and compatibility with Windows, macOS, and Linux.

Pros:

• Eight RAID modes accommodate performance, redundancy, cloning, and independent-drive setups.
• Supports four 3.5-inch SATA drives up to 22TB each, for a listed maximum of 88TB.
• Built-in 150W power supply supports multi-drive operation.
• Aluminum construction, an 80mm cooling fan, vents, and safety locks support sustained use.

Cons:

• USB 3.0 is rated up to 5Gbps, with listed transfer performance of up to 235MB/s.
• Supports 3.5-inch drives only, unlike enclosures that also accept 2.5-inch drives.
• This is a direct-attached RAID enclosure, not a standalone network NAS.

The ORICO stands out for RAID flexibility and high local capacity. Choose it when configurable disk layouts and backup control are more important than network-native access or newer USB-C speeds.

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How We Picked the Best Nas Enclosure with Four Bays

We evaluated each model according to its storage role rather than treating every four-bay enclosure as interchangeable. Network-attached storage (NAS) models were considered for their operating systems, remote access, backup tools, application support, processor performance, and memory. Direct-attached storage (DAS) models were assessed for USB connectivity, hardware RAID options, host compatibility, transfer speeds, and setup simplicity.

We also looked at drive flexibility, diskless design, supported RAID levels, cooling, noise considerations, upgrade potential, and suitability for homes, creators, remote workers, and small teams. Because drive capacity and performance depend heavily on the disks installed, the enclosure itself remains the focus.

Quick Comparison

• Full-featured NAS: Synology, UGREEN, ASUSTOR, and TerraMaster NAS models are designed to connect to your network and provide centralized files, backups, applications, and remote access.
• Simple USB storage: QNAP, TerraMaster D4-series, WAVLINK, and ORICO options are better suited to computers that need local expansion without a complete NAS operating system.
• Creator and office workloads: Prioritize faster networking, stronger CPUs, adequate memory, and reliable backup software when handling large media libraries or shared files.
• Budget-conscious storage: A DAS can cost less and be easier to configure, especially when network access and app support are not required.

Key Buying Factors for a Nas Enclosure with Four Bays

NAS or DAS?

A true NAS operates independently on your network, allowing multiple users and devices to access files. It is the better choice for centralized backups, media services, surveillance, private-cloud features, and remote access. A DAS connects directly to one host computer over USB or another interface, making it simpler and often faster for a single workstation, but less convenient for household or team sharing.

RAID and Drive Planning

Four bays provide useful flexibility. RAID 5 can combine capacity with protection against one drive failure, while RAID 6 adds protection against two failures at the cost of usable space. RAID 10 favors performance and redundancy but uses roughly half the raw capacity. Avoid treating RAID as a backup; keep a separate copy of important files.

Connectivity, Performance, and Compatibility

Check whether the enclosure offers 1GbE, 2.5GbE, 5GbE, or faster networking, and match that capability to your router, switch, and computer. For DAS products, verify USB-C standards and included cables. Confirm support for your preferred 3.5-inch hard drives or 2.5-inch SSDs, maximum capacity, hot swapping, and the operating systems you use.

Noise, Cooling, and Software

Fans, drive vibration, and sustained workloads affect comfort and reliability. NAS software can be a major differentiator, so review its backup, synchronization, snapshot, container, media, and security features before buying.

Who Should Buy Which Nas Enclosure with Four Bays?

Choose a full NAS if several people need shared storage, automated backups, remote access, or always-on services. Choose a DAS if you mainly need extra capacity for one computer, straightforward RAID, or a large local media archive. Choose a performance-focused NAS for creators and small teams moving large files, and choose an easier entry-level model for home users and remote workers who value guided setup over advanced customization.