Searching for a 4 bay NAS enclosure in 2026? The best options balance storage capacity, performance, and ease of setup, but tradeoffs exist. The Synology DiskStation DS423 stands out as the overall best for its user-friendly interface and reliable software. For higher performance, the Terramaster F4-425 Plus offers robust hardware, while the QNAP TR-004 provides flexible direct-attached storage. Keep in mind, choosing between NAS and DAS, hardware specs, and expandability can be tricky. Continue reading for a detailed breakdown of each option.

Key Takeaways

  • The top-ranked picks balance performance, ease of use, and value, making them suitable for different user needs.
  • Hardware specifications like CPU power and RAM significantly influence NAS capabilities, especially for media or backup tasks.
  • Many enclosures support hot-swapping and tool-free drives, but not all include RAID or network features, which are key for data protection.
  • Direct-attached options like the QNAP TR-004 are simpler but lack network features, making them better for local storage only.
  • Price varies widely based on hardware, features, and brand reputation, so prioritize features that match your storage or media needs.

Our Top 4 Bay NAS Enclosure Picks

UGREEN NAS DH4300 Plus 4-Bay Desktop NAS with 128TB Support, AI Photo Album, 8GB RAM, 2.5GbE, 4K HDMI, DisklessUGREEN NAS DH4300 Plus 4-Bay Desktop NAS with 128TB Support, AI Photo Album, 8GB RAM, 2.5GbE, 4K HDMI, DisklessBest Overall for Home Media and Private StorageCapacity: 128TBRAM: 8GB LPDDR4XNetwork: 2.5GbEVIEW LATEST PRICESee Our Full Breakdown
WAVLINK 4-Bay Hard Drive Enclosure for 3.5″ and 2.5″ SATA HDD/SSD with 10Gbps USB-C, 4K HDMI Output, Aluminum ShellWAVLINK 4-Bay Hard Drive Enclosure for 3.5Best for Professional Use with Fast Data Transfer and High CapacitySupported Drive Types: 3.5″ and 2.5″ SATA HDD/SSDMaximum Capacity: 88TBTransfer Speed: up to 10GbpsVIEW LATEST PRICESee Our Full Breakdown
TERRAMASTER D4 SSD NVMe Enclosure – 4 Bay, 40Gbps, USB Type-C, Supports 4xM.2 NVMe 2280 SSDs, Compatible with USB 4/3.2/3.1/3.0, Thunderbolt 5/4/3, DisklessTERRAMASTER D4 SSD NVMe Enclosure - 4 Bay, 40Gbps, USB Type-C, Supports 4xM.2 NVMe 2280 SSDs, Compatible with USB 4/3.2/3.1/3.0, Thunderbolt 5/4/3, DisklessBest for High-Speed Data Transfer and Demanding WorkflowsStorage Capacity: 32TBConnectivity: USB Type CMax Transfer Speed: 40GbpsVIEW LATEST PRICESee Our Full Breakdown
TerraMaster D4-320 External Hard Drive Enclosure – 4 Bay USB 3.2 Gen2, Type-C, Hot Swappable, Plug and Play, DisklessTerraMaster D4-320 External Hard Drive Enclosure - 4 Bay USB 3.2 Gen2, Type-C, Hot Swappable, Plug and Play, DisklessBest for Easy High-Speed External Storage SetupHardware Interface: SATA 6.0 Gb/s, USB 3.2 Gen 2Supported Devices: 4 SATA drives or SSDsMaximum Drive Capacity: 30TB per driveVIEW LATEST PRICESee Our Full Breakdown
UGREEN NAS DXP4800 Plus 4-Bay Desktop NAS with Intel Pentium Gold 8505, 8GB DDR5 RAM, 128GB SSD, 10GbE & 2.5GbE, M.2 NVMe Slots, 4K HDMI, DisklessUGREEN NAS DXP4800 Plus 4-Bay Desktop NAS with Intel Pentium Gold 8505, 8GB DDR5 RAM, 128GB SSD, 10GbE & 2.5GbE, M.2 NVMe Slots, 4K HDMI, DisklessBest for Small Offices and Power Users Seeking PerformanceProcessor: Intel Pentium Gold 8505RAM: 8GB DDR5Storage: Built-in 128GB SSDVIEW LATEST PRICESee Our Full Breakdown
UGREEN NAS DXP4800 Pro 4-Bay Desktop NAS with Intel Core i3-1315U, 8GB DDR5, 128GB SSD, 10GbE & 2.5GbE, M.2 NVMe Slots, 4K HDMI, DisklessUGREEN NAS DXP4800 Pro 4-Bay Desktop NAS with Intel Core i3-1315U, 8GB DDR5, 128GB SSD, 10GbE & 2.5GbE, M.2 NVMe Slots, 4K HDMI, DisklessBest for Power Users and Small BusinessesProcessor: Intel Core i3-1315U 6-CoreRAM: 8GB DDR5 (expandable to 96GB)Storage Capacity: Supports up to 144TB (4x HDD + 2x M.2 SSD)VIEW LATEST PRICESee Our Full Breakdown
Synology DiskStation DS423 4-Bay Diskless NASSynology DiskStation DS423 4-Bay Diskless NASBest for Home and Small Office Data ManagementProduct Type: System CabinetModel: DS423Number of Bays: 4VIEW LATEST PRICESee Our Full Breakdown
CENMATE Aluminum 4 Bay Hard Drive Enclosure with Cooling Fan for 2.5“/3.5″ SATA HDD/SSD with USB A/C 3.0, Support Hot Swappable, Tool-Free HDD Enclosure, DAS(NO RAID/NAS)CENMATE Aluminum 4 Bay Hard Drive Enclosure with Cooling Fan for 2.5“/3.5Best for External Storage and Data TransferHardware Interface: USB 3.0Supported Devices: Desktop, LaptopStorage Capacity: Up to 80TBVIEW LATEST PRICESee Our Full Breakdown
TERRAMASTER F4 SSD NAS Storage – 4-Bay All SSD Network Attached StorageTERRAMASTER F4 SSD NAS Storage - 4-Bay All SSD Network Attached StorageBest for High-Speed SSD Storage and Small BusinessProcessor: Quad-CoreMemory: 8GB DDR5Storage Bays: 4 M.2 NVMe SSDsVIEW LATEST PRICESee Our Full Breakdown
TERRAMASTER F4-425 Plus NAS Storage – 4-Bay Intel N150 Quad-Core, 16GB DDR5, Dual 5GbE, M.2 Slots, DisklessTERRAMASTER F4-425 Plus NAS Storage - 4-Bay Intel N150 Quad-Core, 16GB DDR5, Dual 5GbE, M.2 Slots, DisklessBest for High-Capacity and Versatile StorageVIEW LATEST PRICESee Our Full Breakdown
Sabrent USB 3.0 4-Bay SATA SSD and HDD Docking Station with Cooling Fan (DS-4SSD)Sabrent USB 3.0 4-Bay SATA SSD and HDD Docking Station with Cooling Fan (DS-4SSD)Best for Flexible External Drive ExpansionMaximum Drives: 4Drive Capacity: Up to 16TB per driveDrive Size Compatibility: 2.5-inch SATA SSD/HDDVIEW LATEST PRICESee Our Full Breakdown
Synology DiskStation DS925+ (Diskless) 4-Bay NASSynology DiskStation DS925+ (Diskless) 4-Bay NASBest for Scalable Network Storage and Data ManagementProduct Type: NASNumber of Bays: 4Maximum Supported Drives: 9 with expansionVIEW LATEST PRICESee Our Full Breakdown
QNAP TR-004 4-Bay USB Type-C Direct Attached Storage (DAS) with Hardware RAID (Diskless)QNAP TR-004 4-Bay USB Type-C Direct Attached Storage (DAS) with Hardware RAID (Diskless)Best for External RAID Storage and Data RedundancyModel: TR-004Number of Bays: 4Drive Interface: SATAVIEW LATEST PRICESee Our Full Breakdown

More Details on Our Top Picks

  1. UGREEN NAS DH4300 Plus 4-Bay Desktop NAS with 128TB Support, AI Photo Album, 8GB RAM, 2.5GbE, 4K HDMI, Diskless

    UGREEN NAS DH4300 Plus 4-Bay Desktop NAS with 128TB Support, AI Photo Album, 8GB RAM, 2.5GbE, 4K HDMI, Diskless

    Best Overall for Home Media and Private Storage

    View Latest Price

    This entry-level NAS from UGREEN stands out for its straightforward setup and generous 128TB capacity, making it a strong choice for users prioritizing large storage and media streaming. Compared with the TerraMaster D4-320, it offers more advanced AI photo management and a more modern interface, but it lacks RAID support and Wi-Fi connectivity, which could be limitations for some users. Its 8GB RAM and 2.5GbE support ensure decent performance for home use, though it doesn’t support virtual machines or high-end workflows. The HDMI output allows direct media playback, adding convenience. However, its wired-only connection and entry-level feature set mean it’s less suited for demanding business environments or those needing RAID flexibility.

    Pros:
    • Large 128TB storage capacity for extensive media and data needs
    • User-friendly setup with remote access from multiple devices
    • AI photo album with recognition and duplicate removal
    • Supports 4K HDMI output for media playback
    Cons:
    • No Wi-Fi support; wired Ethernet only
    • Limited to entry-level features without RAID or virtualization

    Best for: Home users seeking large storage, media playback, and easy remote access without complex setup.

    Not ideal for: Small offices or power users requiring RAID, virtualization, or Wi-Fi connectivity.

    • Capacity:128TB
    • RAM:8GB LPDDR4X
    • Network:2.5GbE
    • Video Output:4K HDMI
    • Supported OS:iOS, Android, Windows, macOS
    • Form Factor:Desktop

    Bottom line: This NAS is ideal for home users who prioritize large storage, media features, and simple operation over advanced enterprise capabilities.

  2. WAVLINK 4-Bay Hard Drive Enclosure for 3.5

    Best for Professional Use with Fast Data Transfer and High Capacity

    View Latest Price

    This enclosure from WAVLINK excels in flexibility, supporting both 3.5″ and 2.5″ drives with a maximum of 88TB, making it suitable for users needing high-capacity, portable storage. Unlike the UGREEN NAS DH4300 Plus, it doesn’t provide network access but offers blazing-fast 10Gbps transfer speeds and hot-swappable bays, ideal for quick, on-the-fly data management. The inclusion of 4K HDMI output adds versatility for direct media display, and built-in cooling fans help maintain drive health during intensive workloads. The setup can be complex, especially due to the need for mounting brackets for 2.5″ drives, and HDMI output relies on host support, limiting plug-and-play simplicity. Still, it serves well as a desktop or portable media solution rather than a full NAS.

    Pros:
    • Supports both 3.5″ and 2.5″ SATA drives with up to 88TB
    • Ultra-fast 10Gbps data transfer via USB-C
    • Includes 4K HDMI output for media display
    • Built-in cooling fans ensure stable operation
    Cons:
    • Requires additional mounting brackets for 2.5″ drives
    • HDMI output depends on host support and setup complexity

    Best for: Power users or professionals needing fast, high-capacity external storage with media output capabilities.

    Not ideal for: Home users seeking network storage or those needing RAID configurations for redundancy.

    • Supported Drive Types:3.5″ and 2.5″ SATA HDD/SSD
    • Maximum Capacity:88TB
    • Transfer Speed:up to 10Gbps
    • Display Resolution:4K@60Hz
    • Build Material:Aluminum
    • Drive Bays:4

    Bottom line: This enclosure is best suited for professionals or power users who need quick access to large external drives with high-speed transfers and media output, rather than traditional NAS features.

  3. TERRAMASTER D4 SSD NVMe Enclosure – 4 Bay, 40Gbps, USB Type-C, Supports 4xM.2 NVMe 2280 SSDs, Compatible with USB 4/3.2/3.1/3.0, Thunderbolt 5/4/3, Diskless

    TERRAMASTER D4 SSD NVMe Enclosure - 4 Bay, 40Gbps, USB Type-C, Supports 4xM.2 NVMe 2280 SSDs, Compatible with USB 4/3.2/3.1/3.0, Thunderbolt 5/4/3, Diskless

    Best for High-Speed Data Transfer and Demanding Workflows

    View Latest Price

    The TERRAMASTER D4 SSD NVMe enclosure offers unmatched speeds up to 40Gbps, supporting four M.2 NVMe SSDs for users who need rapid data access and transfer, especially for video editing or large file handling. It outperforms traditional NAS devices like the UGREEN NAS DH4300 Plus in raw speed, but it lacks RAID support and isn’t designed for network sharing; instead, it’s a portable solution optimized for direct connection to high-performance workstations. Its compact size and advanced cooling system make it suitable for demanding tasks, but the cost rises quickly with multiple SSDs, and it requires external power. This makes it less ideal for those needing a complete network storage system, but perfect for speed-critical workflows.

    Pros:
    • Blazing transfer speeds up to 40Gbps
    • Supports four NVMe SSDs for high capacity and speed
    • Compact, portable design with effective cooling
    • Broad compatibility with Thunderbolt and USB 3.x
    Cons:
    • No built-in RAID or network sharing options
    • Requires external power supply
    • Expensive for multiple SSDs and high-end interfaces

    Best for: Creative professionals and power users needing ultra-fast direct-connected storage for intensive tasks.

    Not ideal for: Users seeking network-attached storage or RAID redundancy for data safety.

    • Storage Capacity:32TB
    • Connectivity:USB Type C
    • Max Transfer Speed:40Gbps
    • Supported Drives:4 x NVMe M.2 SSDs
    • Form Factor:2280
    • Compatibility:Windows, Mac, Linux, Android

    Bottom line: Ideal for speed-intensive workflows, this enclosure excels in direct data transfer, not as a traditional NAS or RAID array.

  4. TerraMaster D4-320 External Hard Drive Enclosure – 4 Bay USB 3.2 Gen2, Type-C, Hot Swappable, Plug and Play, Diskless

    TerraMaster D4-320 External Hard Drive Enclosure - 4 Bay USB 3.2 Gen2, Type-C, Hot Swappable, Plug and Play, Diskless

    Best for Easy High-Speed External Storage Setup

    View Latest Price

    The TerraMaster D4-320 offers a straightforward way to expand external storage with four hot-swappable bays supporting SATA drives up to 120TB total. Unlike network-based options such as the UGREEN NAS DH4300 Plus, this device focuses on simplicity and speed, providing USB 3.2 Gen 2 connectivity for transfer rates up to 10Gbps. Its plug-and-play design makes it accessible for users who want quick, reliable expansion without complex configuration. The plastic enclosure keeps costs down but may be less durable over time compared to metal options. Not supporting RAID limits its use for redundancy, but for quick external storage, it’s a solid choice.

    Pros:
    • High-speed data transfer up to 10Gbps
    • Hot-swappable drive bays for quick changes
    • Simple plug-and-play operation
    • Supports up to 120TB total capacity
    Cons:
    • No RAID support for redundancy
    • Plastic enclosure may be less durable
    • Limited to individual disks, not a network solution

    Best for: Users needing fast, easy, external storage expansion without the complexity of NAS or RAID setup.

    Not ideal for: People seeking networked or redundant storage solutions—this is purely direct-attached.

    • Hardware Interface:SATA 6.0 Gb/s, USB 3.2 Gen 2
    • Supported Devices:4 SATA drives or SSDs
    • Maximum Drive Capacity:30TB per drive
    • Supported OS:Windows, Mac, Linux
    • Drive Form Factor:3.5 Inches
    • Dimensions:8.74″L x 7.05″W x 6.06″H

    Bottom line: This enclosure provides a fast, hassle-free way to expand external storage, ideal for users who prioritize speed and simplicity over redundancy.

  5. UGREEN NAS DXP4800 Plus 4-Bay Desktop NAS with Intel Pentium Gold 8505, 8GB DDR5 RAM, 128GB SSD, 10GbE & 2.5GbE, M.2 NVMe Slots, 4K HDMI, Diskless

    UGREEN NAS DXP4800 Plus 4-Bay Desktop NAS with Intel Pentium Gold 8505, 8GB DDR5 RAM, 128GB SSD, 10GbE & 2.5GbE, M.2 NVMe Slots, 4K HDMI, Diskless

    Best for Small Offices and Power Users Seeking Performance

    View Latest Price

    The UGREEN NAS DXP4800 Plus combines robust hardware with versatile features, including a quad-core Intel Pentium Gold 8505 processor, 8GB DDR5 RAM, and 128GB SSD. Unlike the basic UGREEN NAS DH4300 Plus, it offers extensive performance suitable for small business environments or demanding home setups, with support for large capacities up to 144TB through multiple RAID configurations. Its 10GbE and 2.5GbE ports ensure rapid data transfer, and M.2 NVMe slots add expandability. The device’s metal enclosure and 4K HDMI output make it a capable multimedia and data server, yet its more complex setup and higher price point may deter casual users. Hard drives are not included, requiring additional investment.

    Pros:
    • Powerful Intel Pentium Gold processor for smooth multitasking
    • Supports up to 144TB with RAID options
    • Fast 10GbE and 2.5GbE network ports for rapid data transfer
    • Includes M.2 NVMe slots and 4K HDMI output
    Cons:
    • Hard drives must be purchased separately
    • More complex setup and configuration required
    • Higher cost than entry-level options

    Best for: Small office users or tech-savvy home users needing high performance, extensive capacity, and advanced features.

    Not ideal for: Casual users or those seeking plug-and-play simplicity without RAID or high-end hardware.

    • Processor:Intel Pentium Gold 8505
    • RAM:8GB DDR5
    • Storage:Built-in 128GB SSD
    • Network Ports:10GbE & 2.5GbE
    • Maximum Storage Capacity:144TB
    • M.2 NVMe Slots:2

    Bottom line: This NAS is best suited for small businesses or advanced home users who need high performance, expandability, and robust hardware features.

  6. UGREEN NAS DXP4800 Pro 4-Bay Desktop NAS with Intel Core i3-1315U, 8GB DDR5, 128GB SSD, 10GbE & 2.5GbE, M.2 NVMe Slots, 4K HDMI, Diskless

    UGREEN NAS DXP4800 Pro 4-Bay Desktop NAS with Intel Core i3-1315U, 8GB DDR5, 128GB SSD, 10GbE & 2.5GbE, M.2 NVMe Slots, 4K HDMI, Diskless

    Best for Power Users and Small Businesses

    View Latest Price

    The UGREEN NAS DXP4800 Pro stands out for its high-performance Intel Core i3 processor, making it suitable for demanding workflows like virtualization, unlike the Synology DS423, which is more focused on simple storage and backup. Its support for dual M.2 NVMe SSDs and large capacity expansion offers flexibility that Terramaster F4-425 Plus lacks, though its complex setup can challenge beginners. It’s ideal for those needing enterprise-grade security and AI capabilities, but the higher price reflects these advanced features. Compared to the Synology DS423, it provides more raw power and expandability, at the expense of ease of use and cost.

    Pros:
    • Powerful Intel Core i3 processor suitable for demanding workflows
    • Supports virtualization, Docker, and AI features for advanced projects
    • Flexible storage with dual M.2 NVMe slots and high capacity support
    • Enterprise-grade security and data protection
    Cons:
    • Diskless setup requires purchasing HDDs or SSDs separately
    • Setup complexity may overwhelm beginners
    • Higher price point due to professional-grade features

    Best for: Small businesses or tech-savvy power users needing high performance and virtualization support

    Not ideal for: Home users seeking simple storage or those new to NAS setup

    • Processor:Intel Core i3-1315U 6-Core
    • RAM:8GB DDR5 (expandable to 96GB)
    • Storage Capacity:Supports up to 144TB (4x HDD + 2x M.2 SSD)
    • Network Ports:1x 10GbE, 1x 2.5GbE
    • M.2 Slots:2x NVMe
    • Built-in Storage:128GB SSD
    • Form Factor:Desktop
    • Material:Aluminum
    • Warranty:2 Years

    Bottom line: This NAS is best for experienced users needing robust performance and expandability for business or intensive tasks.

  7. Synology DiskStation DS423 4-Bay Diskless NAS

    Synology DiskStation DS423 4-Bay Diskless NAS

    Best for Home and Small Office Data Management

    View Latest Price

    The Synology DS423 offers a reliable, user-friendly platform with flexible 4-bay storage, making it ideal for backups and file sharing, especially compared to the TERRAMASTER F4-425 Plus which is geared toward more demanding tasks. Its durable metal construction and 2-year warranty provide peace of mind, but it requires users to purchase drives separately and may need more technical know-how for advanced features. Unlike the UGREEN DXP4800, which supports virtualization and AI, the DS423 is more suited for straightforward storage and backup needs. Its simplicity makes it perfect for less technical users who prioritize security and ease of use.

    Pros:
    • Flexible 4-bay storage for data consolidation
    • Supports secure file sharing and backup
    • Built-in surveillance tools for up to 30 cameras
    • Durable metal construction with a 2-year warranty
    Cons:
    • Requires separate purchase of drives and camera licenses
    • No pre-installed drives, setup needed
    • Some features may require technical expertise

    Best for: Home users or small offices needing secure, easy-to-manage storage

    Not ideal for: Power users requiring virtualization or high-performance tasks

    • Product Type:System Cabinet
    • Model:DS423
    • Number of Bays:4
    • Storage Type:Diskless
    • Dimensions:9 x 6.6 x 7.24 inches
    • Weight:2210 grams
    • Material:Metal
    • Warranty:2 years
    • Compatible Devices:Server, Desktop, Laptop

    Bottom line: This NAS is perfect for users seeking reliable, easy-to-manage storage with security and surveillance features.

  8. CENMATE Aluminum 4 Bay Hard Drive Enclosure with Cooling Fan for 2.5“/3.5″ SATA HDD/SSD with USB A/C 3.0, Support Hot Swappable, Tool-Free HDD Enclosure, DAS(NO RAID/NAS)

    CENMATE Aluminum 4 Bay Hard Drive Enclosure with Cooling Fan for 2.5“/3.5

    Best for External Storage and Data Transfer

    View Latest Price

    The CENMATE Aluminum 4 Bay Hard Drive Enclosure excels as a fast, reliable external DAS device, especially for those who need quick data transfers and hot-swappable drives, unlike traditional NAS units like the Terramaster F4-SSD. Its aluminum body and built-in cooling fan help manage heat during intensive operations, though the fan noise may bother sensitive users. This enclosure supports up to 80TB total capacity and transfers data at up to 5Gbps, making it ideal for quick backups and external storage, but it doesn’t offer RAID or network sharing, limiting its use for multi-user environments. It is best suited for individual users or small teams needing portable, high-speed external drives.

    Pros:
    • Supports hot-swappable drives for easy access
    • Excellent heat management with aluminum construction and cooling fan
    • Fast data transfer speeds up to 5Gbps
    • Tool-free, easy to install drives
    Cons:
    • No RAID support or network sharing capabilities
    • Fan noise around 40-50 decibels could be disruptive
    • Limited to external direct connection, not a NAS

    Best for: Individuals or small teams needing portable, high-speed external storage

    Not ideal for: Users seeking networked storage or RAID redundancy

    • Hardware Interface:USB 3.0
    • Supported Devices:Desktop, Laptop
    • Storage Capacity:Up to 80TB
    • Form Factor:4 Bay
    • Material:Aluminum
    • Cooling:Built-in Fan

    Bottom line: This external drive enclosure is ideal for quick, high-capacity data transfers and portability, but not for networked storage needs.

  9. TERRAMASTER F4 SSD NAS Storage – 4-Bay All SSD Network Attached Storage

    TERRAMASTER F4 SSD NAS Storage - 4-Bay All SSD Network Attached Storage

    Best for High-Speed SSD Storage and Small Business

    View Latest Price

    The TERRAMASTER F4 SSD NAS delivers exceptional speed and performance with four M.2 NVMe slots and a quad-core processor, surpassing traditional HDD-based NAS like the Synology DS423. Its compact design and active cooling make it suitable for small offices or advanced home use, though it is limited to SSDs, which can be costly for larger capacities. Unlike the UGREEN DXP4800 or Terramaster F4-425 Plus, which support larger capacities or more versatile configurations, this model prioritizes raw speed and quiet operation, ideal for high-speed data access but at a higher cost for storage expansion. It’s perfect for users who need rapid access to high-performance storage without HDDs.

    Pros:
    • Supports four NVMe SSDs for maximum speed
    • Compact and portable with active cooling
    • Ideal for high-speed data access and editing
    • No spinning disks, resulting in silent operation
    Cons:
    • Limited to SSDs, requiring costly upgrades for larger capacity
    • No traditional HDD support, reducing overall capacity options
    • Setup can be complex for those unfamiliar with NVMe configurations

    Best for: Small business users or professionals requiring high-speed SSD storage

    Not ideal for: Users needing large HDD capacity or budget-friendly storage

    • Processor:Quad-Core
    • Memory:8GB DDR5
    • Storage Bays:4 M.2 NVMe SSDs
    • Maximum SSD Capacity:8TB per SSD, 32TB total
    • Network:5GbE Ethernet
    • Cooling:Active cooling with silent fans
    • Dimensions:5.5 x 5.4 x 2.4 inches
    • Enclosure Material:Plastic
    • Warranty:Support details available

    Bottom line: This SSD NAS is best for high-speed, small-scale storage needs where speed outweighs capacity cost.

  10. TERRAMASTER F4-425 Plus NAS Storage – 4-Bay Intel N150 Quad-Core, 16GB DDR5, Dual 5GbE, M.2 Slots, Diskless

    TERRAMASTER F4-425 Plus NAS Storage - 4-Bay Intel N150 Quad-Core, 16GB DDR5, Dual 5GbE, M.2 Slots, Diskless

    Best for High-Capacity and Versatile Storage

    View Latest Price

    The TERRAMASTER F4-425 Plus offers a compelling blend of power and expandability, with a quad-core Intel N150 CPU and 16GB DDR5 RAM, making it more suitable for demanding multitasking than the Synology DS423. Its triple M.2 slots and support for up to 144TB total capacity make it a versatile choice for creative professionals and small businesses, especially compared to the UGREEN DXP4800 which targets virtualization. Its dual 5GbE ports support link aggregation, enhancing network throughput. However, it’s diskless upon purchase, requiring drives, and may be overkill for basic home storage. This unit excels where large capacity and performance are priorities, at a higher cost and complexity.

    Pros:
    • Quad-core CPU and 16GB DDR5 RAM for demanding multitasking
    • Supports up to 144TB with multiple drives and M.2 SSDs
    • Dual 5GbE ports for network performance and link aggregation
    • Durable aluminum chassis with hot-swappable drives
    Cons:
    • Requires initial drive purchase, no drives included
    • Overpowered for basic storage needs
    • Higher price point reflecting advanced features

    Best for: Small businesses or power users needing large capacity and multitasking performance

    Not ideal for: Entry-level home users or those seeking plug-and-play simplicity

      Bottom line: This NAS is best suited for users needing large capacity and high multitasking performance, with extra investment in drives and setup complexity.

    • Sabrent USB 3.0 4-Bay SATA SSD and HDD Docking Station with Cooling Fan (DS-4SSD)

      Sabrent USB 3.0 4-Bay SATA SSD and HDD Docking Station with Cooling Fan (DS-4SSD)

      Best for Flexible External Drive Expansion

      View Latest Price

      This docking station stands out for its simplicity and direct connection to your PC via USB 3.0, making it an excellent choice for those who need quick access to multiple drives without the complexity of a full NAS. Unlike the Synology DS925+ or QNAP TR-004, it does not support network sharing or RAID configurations, focusing solely on external drive management. Its support for drives up to 16TB and tool-free installation make it highly accessible, but it’s limited to 2.5-inch SATA drives and lacks RAID support, meaning data redundancy is not built-in. The built-in cooling fan helps maintain drive health during intensive use, though it doesn’t support 3.5-inch drives or multi-user access. If your needs are primarily for external storage with easy swapping, this model offers a straightforward, affordable solution with reliable performance.

      Pros:
      • Supports high-capacity drives up to 16TB each
      • Fast USB 3.0 transfer speeds up to 5Gbps
      • Tool-free drive swapping simplifies maintenance
      • Effective cooling fan for 24/7 operation
      Cons:
      • Limited to 2.5-inch SATA drives, excluding 3.5-inch options
      • No RAID support for redundancy or performance improvements
      • Requires USB 3.0 port for optimal speeds

      Best for: Users who need a portable, high-capacity external drive station for occasional or continuous use, such as content creators or IT professionals managing backups.

      Not ideal for: Those seeking a centralized network storage or RAID redundancy—this is purely a direct-attached external solution without network capabilities.

      • Maximum Drives:4
      • Drive Capacity:Up to 16TB per drive
      • Drive Size Compatibility:2.5-inch SATA SSD/HDD
      • Transfer Speed:Up to 5Gbps
      • Cooling:Built-in whisper-quiet fan
      • Compatibility:Windows, macOS, Linux
      • Interface:USB 3.0

      Bottom line: This dock makes sense for users needing quick, flexible external storage with reliable cooling, but it isn’t suited for network-based or redundant storage setups.

    • Synology DiskStation DS925+ (Diskless) 4-Bay NAS

      Synology DiskStation DS925+ (Diskless) 4-Bay NAS

      Best for Scalable Network Storage and Data Management

      View Latest Price

      The Synology DS925+ is an ideal choice for users who need a flexible, expandable NAS that supports multiple drives and advanced data management. Compared to the QNAP TR-004, which is purely external storage, the DS925+ offers network access, RAID options, and the ability to expand storage up to nine drives with additional units—making it suitable for growing businesses or tech-savvy households. Its dual 2.5GbE ports provide fast network transfer speeds, while M.2 NVMe slots enhance performance through caching. However, this versatility comes with a higher price tag and more complex setup, which might overwhelm beginners. The need for additional drives to reach full capacity means initial investment is higher, but the benefits in data sharing, backup, and surveillance make this a compelling choice for those prioritizing robust, scalable storage.

      Pros:
      • Supports up to 9 drives with expansion units
      • Fast network transfer with dual 2.5GbE ports
      • Includes M.2 NVMe slots for caching speed boosts
      • Runs Synology DiskStation Manager for comprehensive data features
      Cons:
      • Requires additional drives for maximum capacity
      • Higher initial cost and complexity for setup
      • May be too advanced for casual or non-technical users

      Best for: Small to medium-sized businesses or advanced home users seeking expandable, network-connected storage with versatile management features.

      Not ideal for: Users who prefer plug-and-play external storage solutions or have budget constraints—this requires setup and additional drives for full capacity.

      • Product Type:NAS
      • Number of Bays:4
      • Maximum Supported Drives:9 with expansion
      • Network Ports:2 x 2.5GbE
      • Supported Drives:HDDs or SSDs (diskless)
      • Dimensions:8.78 x 7.83 x 6.54 inches
      • Weight:2260 grams

      Bottom line: Perfect for those who need a scalable, network-enabled NAS with extensive data management options, despite the higher complexity and cost.

    • QNAP TR-004 4-Bay USB Type-C Direct Attached Storage (DAS) with Hardware RAID (Diskless)

      QNAP TR-004 4-Bay USB Type-C Direct Attached Storage (DAS) with Hardware RAID (Diskless)

      Best for External RAID Storage and Data Redundancy

      View Latest Price

      The QNAP TR-004 serves users who need a robust external storage device with hardware RAID options, distinguishing itself from NAS models by focusing solely on direct-attached storage. Its support for RAID 0, 1, 5, JBOD, and individual disks offers flexibility for performance tuning and redundancy, making it ideal for backup or expanding existing NAS setups. Unlike the Synology DS925+, which is a network device, the TR-004 is purely external, limiting its use to direct connection via USB Type-C. While it’s compatible with multiple operating systems, it can’t be integrated into a NAS system or run data management software natively, which could be a drawback for those needing more than just external storage. Its compact design and RAID versatility make it a practical, cost-effective upgrade for external storage needs.

      Pros:
      • Supports multiple RAID levels for redundancy and performance
      • Compatible across Windows, macOS, and Linux
      • Easy to expand storage capacity via USB-C connection
      • Diskless design allows customization of drives
      Cons:
      • Cannot be used as a volume within a NAS environment
      • Limited to external storage use only, no native NAS features
      • Requires compatible RAID setup for redundancy

      Best for: Power users requiring external RAID solutions for backup, media libraries, or expanding existing NAS capacity via USB, especially where network sharing isn’t needed.

      Not ideal for: People looking for a standalone NAS or those wanting integrated data management features—this device functions only as external storage.

      • Model:TR-004
      • Number of Bays:4
      • Drive Interface:SATA
      • Supported RAID Levels:0, 1, 5, JBOD, individual
      • Connectivity:USB Type-C
      • Drive Size:3.5-inch SATA
      • Weight:4.1 pounds

      Bottom line: This device makes sense for users who need flexible external RAID storage, but it isn’t suitable for those seeking integrated NAS functionality.

    4 bay NAS enclosure

    How We Picked

    To compile this list, I focused on products that offer reliable 4-bay configurations suitable for a range of users—from beginners to advanced. Key criteria included hardware build quality, processor and memory specs for multitasking, connectivity options like Ethernet or USB, and expandability features such as M.2 slots or RAID support. I also considered user reviews and brand reputation to ensure durability and software stability. The ranking reflects a balance of performance, ease of setup, and value, with top picks excelling in at least one of these areas while maintaining broad appeal.

    Factors to Consider When Choosing 4 Bay NAS Enclosure

    Choosing the right 4 bay NAS enclosure involves more than just raw specs. It’s essential to align your storage solution with your specific needs, whether for media streaming, backups, or professional workflows. Understanding key factors will help you avoid common pitfalls, such as overpaying for unnecessary features or selecting hardware incompatible with your network environment. Here are the main considerations to guide your decision.

    Performance and Hardware Specs

    Higher-performance NAS enclosures typically feature faster processors, more RAM, and multiple network ports, which are crucial for demanding tasks like 4K streaming or large backups. However, these come at a higher cost and may be more complex to manage. For simple file sharing or backup needs, lower-spec models often suffice. Always match the hardware to your expected workload to avoid bottlenecks or overspending.

    Connectivity and Network Features

    Look for enclosures with gigabit or multi-gigabit Ethernet ports for fast network access. Some models include link aggregation or dual ports, which can improve throughput for multiple users. USB connectivity, especially USB 3.0 or USB-C, is important if you plan to connect directly to a PC or use as external storage. Consider whether your network infrastructure can support higher speeds to maximize the enclosure’s potential.

    Expandability and Future-Proofing

    Features like M.2 slots for cache drives or SSDs can boost performance, especially for intensive workloads. RAID support provides data redundancy, protecting against drive failures. Think about your future storage needs—if you plan to expand or upgrade drives, pick a model that offers easy drive replacement and configurable RAID options. Overpaying for features you won’t use is a common mistake, so focus on what truly adds value for your setup.

    Ease of Use and Software Ecosystem

    User-friendly interfaces and robust software support are often overlooked but can make or break your experience. Brands like Synology are known for intuitive OS and regular updates, making setup and management straightforward. On the other hand, more technical users might prefer open-source or customizable firmware. Balance ease of use with your comfort level and the importance of ongoing support.

    Price and Overall Value

    Prices across the spectrum reflect hardware quality, features, and brand reputation. While it might be tempting to go for the cheapest option, this can result in limited performance or reliability issues. Conversely, premium models often offer enhanced features that are unnecessary for light users. Identify your core needs, then select a model offering the best value—features you need without paying for extras you won’t use.

    Frequently Asked Questions

    Can I use a 4 bay NAS enclosure for both backups and media streaming?

    Absolutely. A 4 bay NAS offers ample storage and often supports RAID configurations for redundancy, making it reliable for backups. Many models also feature media server capabilities, allowing smooth streaming of 4K videos and music to multiple devices. Ensure the NAS has sufficient processing power and network connectivity to handle simultaneous streams or backup tasks efficiently.

    Is it better to buy a NAS with a built-in operating system or a diskless enclosure?

    Choosing between a NAS with pre-installed OS and a diskless model depends on your technical comfort and customization needs. Pre-configured NAS devices with proprietary OS, like Synology or QNAP, tend to be easier to set up and manage, ideal for most users. Diskless enclosures provide flexibility to choose your drives and software but require more technical knowledge. Assess your comfort level before making a decision.

    How important is hardware RAID support in a 4 bay NAS?

    Hardware RAID support is a key feature for data protection, especially if you’re storing valuable or critical files. It allows you to configure redundancy to prevent data loss if a drive fails. While some cheaper models rely on software RAID, hardware RAID offers better performance and reliability. Consider your risk tolerance and whether you prefer ease of management or maximum speed.

    Should I prioritize multi-gigabit Ethernet ports or USB-C connectivity?

    It depends on your intended use. Multi-gigabit Ethernet ports are essential if you want fast network access, especially for media streaming or multiple users accessing large files. USB-C ports are advantageous for direct connection to a PC or external drives, providing flexibility. For most home users, a gigabit or better Ethernet port is more impactful, but professionals might benefit from both.

    Is it worth paying more for models with M.2 slots or SSD caching?

    If your workload involves frequent access to large files or media editing, investing in M.2 slots or SSD caching can significantly improve responsiveness. These features reduce latency and boost transfer speeds, making the system feel snappier. However, for simple backups or storage, they may be unnecessary, and spending extra might not justify the performance gains. Assess your workflow to decide.

    Conclusion

    For most home users and small offices, the Synology DiskStation DS423 offers the perfect balance of ease of use, reliability, and features, making it the best overall choice. Those prioritizing higher performance or expandability might lean toward the Terramaster F4-425 Plus, which excels in hardware specs. Budget-conscious buyers should consider the QNAP TR-004 for straightforward, direct-attached storage. Beginners will appreciate the simplicity of Synology, while professionals needing advanced features should look at models with more robust hardware and expandability options. Match your specific needs with the right model to get the best value and performance.

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