When searching for the best NAS 4 bay in 2026, your priorities likely include performance, ease of use, expandability, and value. The Synology DiskStation DS925+ stands out as the best overall choice thanks to its balanced features and strong software ecosystem. For those seeking high-speed networking, the UGREEN DXP4800 Plus offers impressive 10GbE support, while budget-conscious buyers might prefer the BUFFALO TeraStation Essentials 2025 with included drives. Each option faces tradeoffs—whether in price, complexity, or expandability—that influence which is right for you. Continue reading for a detailed breakdown of these options and how they compare.
Key Takeaways
- Performance and expandability vary widely; high-end models like the UGREEN DXP4800 Plus excel in speed, while more affordable options prioritize simplicity.
- Build quality and software support are key differentiators, with brands like Synology offering reliable, user-friendly interfaces.
- Included drives or empty enclosures impact overall value—some come with pre-installed drives, others require separate purchase.
- Network connectivity options, such as 2.5GbE vs. 10GbE, significantly affect data transfer speeds and future-proofing.
- Size, design, and cooling features influence installation flexibility and noise levels, especially in home environments.
More Details on Our Top Picks
TERRAMASTER F4-425 Plus NAS Storage – 4-Bay, Intel N150 Quad-Core, 16GB DDR5, Dual 5GbE LAN, M.2 Slots, Diskless
The TERRAMASTER F4-425 Plus stands out as the best choice for users who need serious performance and expandability. Its powerful Intel N150 quad-core processor combined with 16GB DDR5 RAM makes it well-suited for demanding tasks like media editing or small business hosting, outperforming models like the Synology DS925+ in raw power. The triple M.2 slots and high-capacity support up to 144TB provide remarkable flexibility, though the diskless setup means extra cost for drives. Its durable aluminum chassis and hot-swappable drives make maintenance straightforward, but the complexity of its features might overwhelm casual users. Compared with less robust options, this NAS offers a true high-performance experience—ideal for tech-savvy users who prioritize speed and flexibility over simplicity.
Pros:- Strong quad-core CPU handles demanding workloads
- Supports dual 5GbE LAN with link aggregation for fast network transfer
- Flexible storage with three M.2 slots and high capacity up to 144TB
- Durable aluminum chassis with hot-swappable drives
Cons:- Requires purchase of drives separately, increasing initial cost
- Complex setup and management for casual users
Best for: Power users and small businesses needing high performance and extensive storage options
Not ideal for: Beginners or home users seeking plug-and-play simplicity without advanced features
- Product Type:System Cabinet
- CPU:Intel N150 Quad-Core up to 3.6GHz
- Memory:16GB DDR5
- Number of Bays:4
- Maximum Storage Capacity:144TB
- Network Interfaces:2 x 5GbE LAN ports
- M.2 Slots:3
- Drive Mounting:Hot-swappable, Direct Data Drive Mounting
Bottom line: This NAS is best suited for experienced users who need high performance and maximum flexibility.
UGREEN NAS DXP2800 2-Bay Desktop All-Round NAS for Small Teams with Intel N100, 8GB DDR5, 2.5GbE, M.2 NVMe, 4K HDMI, Diskless
The UGREEN NAS DXP2800 offers a balanced combination of power and simplicity, making it ideal for small teams or tech enthusiasts who value ease of use. Its Intel N100 processor and 8GB DDR5 RAM support multiple applications simultaneously, outperforming less capable dual-bay options like the UGREEN NASync DH4300 Plus in processing speed. While it supports up to 76TB of storage and includes features like 4K HDMI output and AI photo management, it requires users to purchase drives separately, which could be a drawback for some. Its straightforward setup and cross-device compatibility make it more accessible than more complex high-end NAS systems, though the two-bay limit may restrict growth for larger data needs.
Pros:- Strong Intel N100 processor for multitasking
- Supports up to 76TB of storage
- User-friendly setup with cross-platform access
- Includes 4K HDMI output and AI photo features
Cons:- No drives included, additional cost for storage
- Limited to 2 drive bays, restricting expansion
Best for: Small teams or enthusiasts wanting easy-to-use, reliable storage with multimedia support
Not ideal for: Large enterprises or users needing extensive scalability beyond 2 bays
- Processor:Intel N100 Quad-core
- RAM:8GB DDR5
- Network:2.5GbE
- Storage Slots:2 x M.2 NVMe
- Max Storage Capacity:76TB
- Video Output:4K HDMI
Bottom line: This NAS is a solid choice for small teams seeking reliable, multimedia-capable storage with straightforward management.
UGREEN NASync DH4300 Plus 4-Bay Desktop NAS, Support Capacity 128TB, 8GB RAM, 2.5GbE, 4K HDMI, Diskless
The UGREEN NASync DH4300 Plus delivers a straightforward, entry-level 4-bay NAS suitable for home use and small media libraries. Its support for up to 128TB makes it appealing for users needing large storage without complexity, especially compared to more advanced models like the TERRAMASTER F4-425 Plus. The inclusion of features such as 4K HDMI and AI photo recognition enhance its multimedia appeal, but the device remains limited in virtual machine or advanced application support. Disks are not included, which could increase initial costs. Its simple setup and focus on privacy and backup make it a good option for those prioritizing ease of use over high-end features.
Pros:- Supports extensive storage up to 128TB
- Easy setup with multimedia features
- AI photo recognition and private encryption
- Supports remote access
Cons:- Disks not included, additional purchase needed
- Limited to entry-level features, no virtual machine support
Best for: Home users or small media libraries seeking simple, large-capacity storage
Not ideal for: Power users needing virtualization or extensive business features
- Support Capacity:128TB
- RAM:8GB LPDDR4X
- Network:2.5GbE
- Video Output:4K HDMI
- Processor:High-performance processor
Bottom line: This NAS makes sense for home users wanting large storage with simple management and multimedia support.
UGREEN NASync 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
The UGREEN NASync DXP4800 Plus is tailored for small office environments that require robust performance and fast data transfer. Its Intel Pentium Gold 8505 processor with 10GbE and 2.5GbE ports surpasses many competitors like the TERRAMASTER F4-425 Plus in network speed, making it ideal for collaborative workflows. Its support for up to 144TB and features such as Docker and virtual machine support add versatility, though it requires users to purchase compatible drives separately. The inclusion of a 128GB SSD accelerates system responsiveness, but setup complexity and drive compatibility may challenge less experienced users. This NAS caters to small teams needing enterprise-level performance in a compact form.
Pros:- High-performance Intel Pentium Gold processor
- Fast 10GbE and 2.5GbE network ports for quick transfers
- Supports virtualization and Docker containers
- Large capacity up to 144TB
Cons:- Drives not included, increasing initial expense
- Setup may be complex for some users
Best for: Small offices or workgroups needing high-speed networking and virtualization capabilities
Not ideal for: Home users or those without technical experience managing advanced features
- Processor:Intel Pentium Gold 8505 5-Core
- RAM:8GB DDR5
- Storage:128GB SSD (diskless)
- Network Ports:1 x 10GbE, 1 x 2.5GbE
- Maximum Storage Capacity:144TB
- Video Output:4K HDMI
Bottom line: This NAS is designed for small office teams seeking high-speed networking and virtualization in a compact device.
Synology DiskStation DS925+ (Diskless) 4-Bay NAS
The Synology DS925+ offers exceptional scalability and software ecosystem, making it ideal for users planning future expansion. Its dual 2.5GbE ports and support for up to 9 drives with expansion units outshine many competitors like the TERRAMASTER F4-425 Plus in flexibility. The device supports M.2 NVMe caching, boosting performance for data-heavy operations, and runs Synology’s DiskStation Manager, renowned for its user-friendly interface and extensive app library. Nevertheless, its setup can be daunting for less technical users, and the initial cost is higher, especially considering the need for additional drives. This device fits best with users who want long-term growth and a rich software environment.
Pros:- Supports expansion up to 9 drives
- Dual 2.5GbE ports for fast networking
- M.2 NVMe caching improves performance
- Rich software ecosystem with flexible data management
Cons:- Requires technical setup and configuration
- Additional drives are needed for full capacity, increasing cost
Best for: Businesses or advanced home users needing scalable storage and robust software tools
Not ideal for: Casual or novice users seeking straightforward, out-of-the-box solutions
- Drive Bays:4 (diskless)
- Maximum Supported Drives:9 with expansion
- Network Ports:2 x 2.5GbE
- Supported Protocols:Data sharing, backup, surveillance
- Processor:Intel-based
- Memory:Supports caching with M.2 NVMe
Bottom line: This NAS is perfect for users who prioritize scalability and software features over plug-and-play simplicity.
BUFFALO TeraStation Essentials 2025 4-Bay Desktop NAS 16TB with Hard Drives Included
The BUFFALO TeraStation Essentials 2025 stands out for its ease of setup, especially with pre-installed drives and straightforward RAID options, making it accessible for users new to NAS management. Compared to the TERRAMASTER D4-320, it offers built-in redundancy and enterprise-grade security, but its 16TB capacity limits flexibility unless additional drives are added. Its high-speed 2.5GbE port and 256-bit encryption deliver a secure, reliable experience for small business environments. However, the fixed 16TB capacity and the need for some technical knowledge to reconfigure RAID may deter more advanced users or those with larger storage needs. This pick makes the most sense for small to medium-sized businesses seeking a ready-to-go, secure, and scalable network storage solution with professional features.
Pros:- Pre-installed drives simplify setup and reduce initial configuration time
- High-speed data transfer with native 2.5GbE port
- Strong security features including 256-bit encryption
Cons:- Limited to 16TB capacity unless additional drives are purchased
- RAID reconfiguration can be complex for some users
- Designed primarily for small to medium business use, not scalable for large enterprise needs
Best for: Small to medium business users needing a ready-to-deploy, secure NAS with built-in drives
Not ideal for: Home users or large enterprises requiring larger capacities or customizable hardware
- Capacity:16TB (4x4TB hard drives)
- RAID:Pre-configured RAID 5, configurable to RAID 6 or RAID 0
- Network Interface:2.5GbE port
- Encryption:256-bit drive encryption
- Warranty:3 years
- Made in:Japan
Bottom line: This NAS is best for small to medium businesses seeking a secure, easy-to-use network storage solution with professional features.
TERRAMASTER D4-320 External Hard Drive Enclosure – 4 Bay USB 3.2 Gen2, Type-C, Hot Swappable, Plug and Play, Diskless
The TERRAMASTER D4-320 excels for users needing flexible, high-performance external storage with quick access to multiple drives. Its USB 3.2 Gen2 interface supports transfer speeds up to 10Gbps, making it ideal for fast backups or large file transfers. Unlike the Buffalo TeraStation, it is diskless, requiring users to supply their own drives, which offers customization but adds complexity. The hot-swappable bays and efficient cooling system enable easy maintenance and reliability. However, the lack of RAID support means no built-in redundancy, making it less suited for critical data storage. This enclosure is perfect for professionals and prosumers who want fast, versatile external storage without the need for network access or RAID features.
Pros:- Supports data transfer speeds up to 10Gbps
- Hot swappable and tool-free drive installation
- Compatible with multiple operating systems
Cons:- No RAID support, so no redundancy built-in
- Requires separate hard drives for storage capacity
- Limited to external DAS, not a network device
Best for: Power users needing high-speed external storage with easy drive swapping
Not ideal for: Users seeking a network-attached solution or built-in redundancy
- Number of Bays:4
- Interface:USB 3.2 Gen2, Type-C
- Data Transfer Speed:Up to 10Gbps
- Supported Drive Types:3.5-inch SATA HDD, 2.5-inch SATA HDD, 2.5-inch SATA SSD
- Maximum Drive Capacity:30TB per drive
- Cooling:Temperature-controlled fan
Bottom line: This enclosure is best for users who need fast, flexible external storage with easy drive access and no redundancy requirements.
AOOSTAR WTR PRO AMD Ryzen 7 5825U Mini NAS PC, No RAM/SSD, 4K HDMI, Dual M.2 NVMe, 4 Bay Storage
The AOOSTAR WTR PRO offers impressive performance thanks to its AMD Ryzen 7 5825U processor, making it suitable for multitasking, media editing, and light server duties. Unlike traditional NAS units like the BUFFALO TeraStation, it’s a mini PC with expandable RAM and storage, providing versatility for advanced users who want more control. It supports up to 4K displays simultaneously and has dual M.2 slots for fast NVMe SSDs, ideal for caching or high-speed storage. However, the absence of pre-installed RAM or SSD means additional purchases and setup complexity. Its power-efficient design and quiet operation make it suitable for small offices or media centers, but users unfamiliar with hardware upgrades may find it daunting. This device suits tech-savvy users who want a compact, high-performance multi-purpose system.
Pros:- Powerful AMD Ryzen 7 processor enables excellent multitasking
- Supports up to 4K displays for multimedia productivity
- Expandable RAM and storage for future upgrades
Cons:- No RAM or SSD included, requiring additional investment
- Setup can be complex for users unfamiliar with hardware upgrades
- Limited to 15W-25W power, which might restrict high-performance tasks
Best for: Tech-savvy professionals needing a versatile, high-performance mini PC for NAS, media, and multitasking
Not ideal for: Less experienced users or those seeking an out-of-the-box, plug-and-play NAS solution
- Processor:AMD Ryzen 7 5825U
- Graphics:Integrated Radeon Vega
- Memory:Supports up to 64GB DDR4
- Storage:4 bays, expandable with 2 M.2 NVMe slots
- Video Output:Supports up to 3 x 4K displays
- Power Consumption:15W – 25W
Bottom line: This mini PC is ideal for advanced users who want a compact, flexible, and powerful system for NAS and multimedia tasks.
QNAP TR-004 4-Bay USB Type-C Direct Attached Storage (DAS) with Hardware RAID (Diskless)
The QNAP TR-004 stands out for its support of multiple hardware RAID configurations, making it a flexible choice for users needing data protection without dedicated NAS software. Unlike the Synology DS425+, it doesn’t include built-in management features or network connectivity, so it’s best suited for those who want a simple, direct-attached solution. The lockable drive bays add an extra layer of security, especially for sensitive data. However, it’s limited to external storage and cannot function as a standalone NAS or be integrated into a network easily, which could be a drawback for users seeking a comprehensive network solution. This device makes the most sense for those who need a portable, reliable RAID array to expand storage on multiple systems without the complexity of a full NAS.
Pros:- Supports multiple RAID configurations for versatile data protection
- Compatible with Windows, macOS, and Linux, offering broad flexibility
- Lockable drive bays enhance physical security
Cons:- Limited to external storage, no network features or NAS functions
- Cannot be integrated into a network or used as a NAS
Best for: Tech-savvy users requiring portable, hardware RAID external storage compatible with multiple OS
Not ideal for: Home users wanting a standalone network NAS or those seeking integrated data management features
- Number of Bays:4
- Interface:USB Type-C
- Supported Systems:Windows, macOS, Linux
- Drive Compatibility:3.5-inch SATA 3Gb/s
- RAID Support:RAID 0, 1, 5, JBOD, individual disks
- Drive Bays Lockable:Yes
Bottom line: Ideal for users who need portable, hardware RAID storage without the complexities of network-based systems.
TERRAMASTER F4-425 4-Bay NAS Storage Diskless
The TERRAMASTER F4-425 offers a compelling balance of power and ease of use, thanks to its Intel x86 quad-core processor and 4GB RAM, which outperform many competitors like the Synology DS425+ in processing speed for multitasking and media transcoding. Its 2.5GbE LAN port delivers faster network speeds, ideal for streaming high-resolution media or large backups. While it’s more powerful than the QNAP TR-004 external device, it’s a dedicated NAS, meaning it requires network setup and management, which could be complex for some users. The quiet operation and tool-free HDD installation make it very user-friendly for home environments. The main tradeoff is that it’s a diskless system, so users must invest separately in drives, adding to overall cost.
Pros:- Powerful quad-core processor with 4GB RAM handles multitasking and 4K media transcoding
- Supports up to 120TB storage with flexible RAID options
- Quiet operation at 21dB suitable for living spaces
Cons:- Requires separate purchase of HDDs, increasing total cost
- Limited to 4 bays, less expandable than larger systems
Best for: Home users or small offices needing powerful multimedia and backup capabilities with easy setup
Not ideal for: Users seeking simple external storage or without the budget for additional drives
- Processor:Intel x86 quad-core
- RAM:4GB
- Storage Capacity:Up to 120TB
- Network:2.5GbE LAN
- HDD Bays:4
- Noise Level:21dB
Bottom line: Best suited for home users who want a powerful, quiet NAS with high-speed network transfer and media capabilities.
Synology 4-Bay DiskStation DS425+ (Diskless)
The Synology DS425+ excels in high-speed data transfer, supporting up to 80 TB with 278/281 MB/s sequential read/write speeds that surpass many competitors like the TERRAMASTER F4-425 in raw performance. Its comprehensive software ecosystem offers advanced data management, security, and surveillance options, making it suitable for users who prioritize robust management features over raw speed or power. Unlike the QNAP TR-004, which is an external RAID array, the DS425+ is a full NAS solution that integrates seamlessly into a network, ideal for small businesses or tech-savvy home users. The main limitation is that drives are sold separately, and initial setup may be complex for beginners. It’s perfect for those who want reliable, scalable storage with built-in management tools.
Pros:- High data transfer speeds for efficient file handling
- Supports large storage capacity up to 80 TB
- Includes advanced data security and management features
Cons:- Requires separate purchase of drives, increasing initial costs
- Setup can be complex for users unfamiliar with NAS systems
Best for: Small businesses or advanced home users needing fast, secure, and scalable data management
Not ideal for: Beginners or users seeking plug-and-play external storage solutions
- Drive Bays:4
- Maximum Storage Capacity:80 TB
- Sequential Read/Write Throughput:278/281 MB/s
- Warranty:3-year
Bottom line: Ideal for users demanding high-speed, secure, and scalable network storage with advanced management options.
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)
The Aluminum 4 Bay Hard Drive Enclosure offers a straightforward, high-speed external storage solution for individuals or businesses that prefer a DIY approach. Its aluminum body and integrated cooling fan help mitigate heat, making it a solid choice over basic plastic enclosures like the QNAP TR-004. The support for hot-swappable drives and USB 3.0 with 5Gbps transfer speeds makes it suitable for quick data swaps and fast backups. However, it lacks RAID or NAS features, limiting its use to basic external storage, unlike the Synology DS425+ or TERRAMASTER F4-425. The fan noise, around 40-50 decibels, could be intrusive if quiet operation is a priority. It’s best for those who want a high-performance, tool-free external enclosure without additional management features.
Pros:- High-speed USB 3.0 with 5Gbps transfer rate
- Effective heat dissipation with aluminum body and cooling fan
- Hot-swappable drives and tool-free installation
Cons:- No RAID or NAS functionality, purely external storage
- Fan noise can be noticeable, around 40-50dB
Best for: Power users or small businesses needing fast, reliable external storage with heat management
Not ideal for: Users seeking integrated NAS or RAID capabilities or noise-sensitive environments
Bottom line: Best for DIY enthusiasts or small businesses seeking reliable, high-speed external storage with thermal management.
How We Picked
Our evaluation focused on essential factors that matter most to buyers: performance, expandability, ease of use, build quality, and value. We prioritized models with a good balance of hardware specs and user-friendly software, considering both novice and advanced users. Diskless units were included to assess upgrade flexibility, while pre-loaded options helped identify cost-effective solutions. We compared network speeds, RAM capacity, expandability options, and overall durability to determine the most well-rounded choices. The ranking reflects a combination of these criteria, emphasizing real-world usability and long-term value.
Factors to Consider When Choosing Best Nas 4 Bay
Choosing the best NAS 4 bay requires understanding your specific needs and weighing several key factors. Beyond raw hardware specs, consider how expandable the system is, the quality of its software ecosystem, and its ease of setup. Clarifying your primary use—whether for media streaming, backup, or business—will influence which features matter most. Being aware of common pitfalls, like overestimating storage needs or ignoring network requirements, can help you make a more informed purchase. Here are the main considerations to guide your decision.Performance and Speed
Performance is vital if you plan to stream 4K media, run virtual machines, or handle large data transfers. Look for models with multi-core processors, ample RAM, and network interfaces supporting at least 1GbE, with 2.5GbE or 10GbE options offering future-proofing. Keep in mind that higher raw specs often come with increased costs. Avoid models with underpowered hardware if speed and multitasking are priorities, but remember that higher performance typically means a higher price.
Expandability and Storage Capacity
Most 4-bay NAS units support RAID configurations, but check the maximum supported capacity and whether the bays are hot-swappable for easier upgrades. Consider if you want pre-installed drives or an empty enclosure. Some models include SSD slots for cache acceleration, which can boost performance for demanding tasks. Avoid choosing a system with limited upgrade options if you anticipate growing storage needs or want to customize your setup over time.
Software Ecosystem and Usability
The quality of the software interface can make or break your experience. Brands like Synology and QNAP are known for intuitive, feature-rich OSes that simplify management and app integration. For beginners, user-friendly dashboards and extensive support resources are essential, while power users might value advanced features like container support or virtualization. Beware of models with overly complex interfaces or limited app ecosystems if ease of use is a priority.
Network Connectivity
Fast transfer speeds depend on the network interfaces available. While 1GbE ports are standard, upgrading to 2.5GbE or 10GbE can significantly reduce backup and access times—especially important for media professionals or large-scale backups. Consider your current network infrastructure and future plans to choose a NAS with appropriate port options. Remember, investing in faster network hardware can be more cost-effective than upgrading the NAS later.
Price and Total Cost of Ownership
Initial purchase price is just one part of the total cost. Pre-installed drives add convenience but increase upfront costs, while diskless units require additional investment. Also, consider energy consumption, noise levels, and maintenance costs over time. Cheaper models may save money initially but lack robustness or expandability, leading to higher costs later. Balance your budget with your long-term storage and performance needs to get the best value.
Frequently Asked Questions
Is it better to buy a NAS with pre-installed drives or a diskless model?
Choosing between pre-installed drives and a diskless NAS depends on your budget and familiarity with hardware setup. Pre-installed drives simplify the purchase process and reduce setup time but often come at a premium. Diskless models offer greater flexibility, allowing you to select drives based on your performance needs and budget, but they require additional effort to install and configure. Consider your comfort with hardware assembly and whether you want to customize your storage from the start.
How important is network speed in choosing a NAS?
Network speed directly impacts how quickly you can access, transfer, and back up data. For streaming high-resolution media or working with large files, faster interfaces like 2.5GbE or 10GbE make a noticeable difference. If your current network hardware supports these speeds, investing in a NAS with compatible ports future-proofs your setup. Otherwise, sticking with 1GbE may suffice for lighter tasks, but it could bottleneck performance as your needs grow.
Should I prioritize a more powerful CPU or more RAM?
Both CPU and RAM influence NAS performance, but their importance varies based on usage. A more powerful processor benefits multitasking and resource-intensive applications like virtualization or media encoding. Ample RAM helps with caching and handling multiple users simultaneously. For most home users, a balance of decent CPU and sufficient RAM (8GB or more) is enough, but power users should look for higher specs to avoid bottlenecks.
Are network ports like 10GbE necessary for home use?
For typical home backups and streaming, 1GbE ports are usually sufficient. However, if you have large media libraries or frequently transfer large files, upgrading to 10GbE can dramatically reduce transfer times. The main consideration is whether your current network infrastructure can support these speeds; otherwise, investing in faster ports might be unnecessary until you upgrade your entire network setup.
What should I consider if I want a NAS for media streaming?
For media streaming, prioritize models with fast network interfaces, ample RAM for caching, and media server compatibility. Hardware acceleration features can help with transcoding 4K content smoothly. Quiet operation and good cooling are also important to avoid disturbances. Avoid models with limited processing power or slow network ports, as they can cause buffering or slow access to your media library.
Conclusion
For general users seeking a reliable and easy-to-manage system, the Synology DiskStation DS925+ offers a superb balance of performance, usability, and software support, making it the best overall choice. Budget-conscious buyers or small offices might prefer the BUFFALO TeraStation Essentials 2025 with included drives for value. Power users or media professionals who need high-speed data transfer should consider the UGREEN DXP4800 Plus with 10GbE support. Beginners or those with simple backup needs will find the diskless options straightforward, while enterprise-focused buyers should look at models with expandability and higher resilience. Tailor your choice to your specific use case for the best long-term investment.
