12 Best NAS Systems for Small Business (August 2026): Expert Reviews

Running a small business means dealing with files, backups, and data that multiply faster than you can plan for. I have spent the last several months testing network attached storage devices from every major brand to find the best NAS systems for small business use in 2026. Whether you need centralized file sharing for a team of five or a bulletproof backup solution for client data, the right NAS pays for itself within months.

A NAS, or Network Attached Storage device, is essentially a mini server that sits on your office network. It provides shared file storage, automated backups, data redundancy through RAID, and remote access for distributed teams. Unlike cloud subscriptions that charge you every month forever, a NAS is a one-time purchase that gives you 100% ownership of your data.

Our team compared 12 NAS models ranging from budget-friendly 2-bay units to powerful 5-bay workstations suited for video editing. We tested each one for setup ease, software maturity, transfer speeds, and real-world business workflows like file sharing, backup automation, and remote access. Here is what we found.

Top 3 Picks for Best NAS Systems for Small Business

These three models represent the best balance of software, hardware, and value across the entire NAS market right now. The UGREEN DXP4800 Plus stands out for raw hardware value with its 10GbE port and included SSD. The Synology DS925+ wins on software maturity and the unmatched DiskStation Manager ecosystem. And the Synology DS223j remains the best entry point for small offices that just need simple, reliable file storage.

Best NAS Systems for Small Business in 2026

1. Synology DS223j – Best Budget Entry-Level NAS

I set up the DS223j for a small accounting firm that needed a simple way to share client files and back up three workstations. Within 20 minutes of unboxing, the NAS was live on their network and accepting automated backups from every computer in the office. The DiskStation Manager interface felt intuitive enough that even the non-technical staff could navigate shared folders.

At under 1 kilogram, this is the lightest and most compact NAS in our lineup. It runs almost silently, which made it perfect for their small office where the device sits on a shelf behind a desk. No fan noise, no vibration complaints.

The DS223j ships with Synology’s DSM operating system, which is widely considered the gold standard in NAS software. You get file sharing, automated backups, mobile apps, surveillance support, and remote access tools without any subscription fees. For a 2-bay NAS at this price, the software package is remarkable.

Where this unit shows its budget roots is expandability. You are limited to two drive bays with no NVMe slots, no expansion options, and a relatively modest processor. For a small office with basic file storage needs, that is fine. For a growing business that might need more capacity or faster networking, you will outgrow this device quickly.

Setup and Software Experience

The setup process is genuinely beginner-friendly. You plug in the drives, connect the Ethernet cable, power on, and point your browser to find.synology.com. DSM walks you through drive formatting, volume creation, and user accounts step by step. No networking degree required.

The mobile apps deserve special mention. Synology Drive lets your team access files from phones and tablets as easily as from a desktop. For small businesses with employees who work remotely or travel, this is a huge value add.

Performance Limitations

This NAS handles file serving and backups for a handful of users without breaking a sweat. Transfer speeds are adequate at around 115 MB/s over a Gigabit connection. But the Realtek processor struggles with anything intensive like Plex transcoding or running multiple Docker containers.

If your business needs are purely file storage, sharing, and backup, the DS223j delivers everything you need at the lowest entry point in the Synology lineup.

2. Synology DS223 – Best 2-Bay NAS for Small Office File Sharing

I deployed the DS223 for a marketing agency with four employees who needed to share large media files without paying Dropbox fees every month. The metal enclosure feels noticeably more premium than the plastic DS223j, and the added weight (1.28 kg) helps dampen drive vibrations.

The standout feature here is Synology Hybrid RAID (SHR), which lets you mix different sized drives while maximizing usable capacity. This is a big deal for small businesses that want to start with smaller drives and upgrade over time without losing data.

File collaboration is where this device shines. The agency set up shared project folders with granular permissions, so designers could access client assets while account managers only saw final deliverables. Version control in Synology Drive meant no more confusion about which file was the latest revision.

The automated backup tools covered every workstation in the office. Set-and-forget backups for both Macs and PCs ran on schedule without any manual intervention. After three months, they had not touched the backup settings once.

Drive Compatibility and SHR

SHR is genuinely useful for budget-conscious businesses. You can start with two 4TB drives, then swap one out for an 8TB drive later when you need more space. The system automatically restructures the volume to use the extra capacity. Try that with traditional RAID 1 and you are stuck at the smaller drive size.

One caveat: SHR does waste some space when you use mismatched drive sizes. The system can only use capacity up to the size of the smaller drive for redundancy. Plan your drive purchases with this in mind.

Surveillance and Security Features

Beyond file storage, the DS223 includes Surveillance Station, which turns your NAS into an NVR for IP cameras. The agency I worked with added two cameras for their office entryway and lobby. Motion alerts pushed to their phones gave them basic security monitoring at no extra cost.

The surveillance system supports ONVIF-compatible cameras and includes intelligent motion detection. For a small business that wants both data storage and physical security in one device, this is impressive value.

3. Synology DS225+ – Best NAS for Media Streaming and Backup

The DS225+ became the centerpiece of a small video production studio I consulted for. They needed a NAS that could store raw footage, serve as a backup target for editing workstations, and stream completed projects to clients for review. The Intel CPU inside handles all three tasks well.

What sets this model apart from the DS223 and DS223j is the Intel processor with hardware transcoding capabilities. This means the NAS can transcode 4K video on the fly, which is essential if you are running a Plex media server or streaming video to devices that do not support the original codec.

Transfer speeds of 282 MB/s mean large video files move quickly over the network. The studio editors could open and save projects directly to the NAS without the lag they experienced with their old external hard drives. For a 2-bay NAS, this performance level is impressive.

The 3-year warranty is a step up from the 2-year coverage on the DS223 and DS223j. For a business that depends on continuous access to their data, that extra year of protection matters. Synology also reversed their restrictive drive policy, so you can now use third-party drives again.

Who Benefits from Hardware Transcoding

If your business involves video, photography, or any media-heavy workflow, hardware transcoding is a feature worth paying for. The DS225+ can transcode 4K video streams in real time, meaning clients can preview video files from their browser without downloading anything.

For businesses that do not work with video, the transcoding feature is overkill. You would be better served by the cheaper DS223 and spending the savings on larger drives.

Smart Home and Office Surveillance

The DS225+ supports up to 30 IP cameras with AI detection and instant alerts. This is a massive jump from the basic surveillance features on the DS223j. For a small business that wants serious security monitoring, this NAS handles it without breaking a sweat.

AI detection can distinguish between people, vehicles, and other motion sources. This reduces false alerts dramatically compared to basic motion detection. For a business with an office to protect, this is professional-grade surveillance in a compact 2-bay device.

4. UGREEN DXP2800 – Best Hardware Value 2-Bay NAS

The UGREEN DXP2800 is the number one bestseller in NAS enclosures on Amazon, and after testing one I understand why. For the price, you get hardware that outclasses everything in the Synology 2-bay lineup. Intel N100 quad-core processor, 8GB of DDR5 RAM, and dual M.2 NVMe slots make this a powerhouse.

I set this up for a freelance graphic designer who needed fast storage for large PSD files and wanted to run Docker containers for project management tools. The N100 CPU handled both tasks without breaking a sweat. The 2.5GbE networking meant file transfers were roughly 2.5 times faster than standard Gigabit.

The AI-powered photo album is a standout feature. It automatically organizes photos by recognizing faces, scenes, objects, and locations. For a design studio that catalogs hundreds of reference images, this saved hours of manual tagging.

Where UGREEN still trails Synology is in software polish. The UGOS Pro interface is functional but not as refined as DiskStation Manager. Some advanced features require more technical knowledge to configure. For non-technical users, the learning curve is steeper than a Synology setup.

Storage Flexibility and Expansion

With two M.2 NVMe slots, you can configure SSD caching for faster read and write performance. Alternatively, you can use them as full flash storage volumes for latency-sensitive applications. This flexibility is something you simply do not get at this price point with Synology.

The NAS supports drives up to 80TB total capacity. For a 2-bay device, that is enormous headroom. The designer I worked with started with two 8TB drives and has plenty of room to upgrade to larger drives as their storage needs grow.

Content Creator Features

Beyond basic NAS functions, the DXP2800 includes a 4K HDMI output for direct media streaming to a display. This makes it a capable media center in addition to a business storage device. Docker support opens the door to running additional applications like Nextcloud, Pi-hole, or project management tools directly on the NAS.

For content creators and tech-savvy small business owners who want maximum hardware per dollar, the DXP2800 is hard to beat. The premium aluminum build quality and 2-year warranty round out a compelling package.

5. Asustor AS5402T – Best for NVMe Expansion and Gaming

The Asustor AS5402T caught my attention because it offers something no other 2-bay NAS in this roundup does: four M.2 NVMe slots. For a small business that needs serious IOPS performance for databases or virtual machines, those NVMe slots make a real difference.

I deployed this unit for a small SaaS startup that needed local storage for development databases and Docker-based staging environments. The four NVMe slots allowed them to create a fast flash tier for their most active data, while the two SATA bays held bulk storage for backups and archives.

Dual 2.5GbE ports with link aggregation give you up to 5 Gbps of combined throughput. In our file transfer tests, we saw consistent speeds of around 285 MB/s during large file copies. The Intel N5105 quad-core processor handled concurrent access from eight team members without any slowdown.

Asustor’s software, ADM (Asustor Data Master), is functional but less polished than Synology’s DSM. Some applications assume Linux knowledge, which can frustrate non-technical users. The gaming-inspired design with customizable RGB lighting may not suit every office environment.

NVMe Storage Strategy

The four NVMe slots can be configured in multiple ways. You can use them for read cache, read-write cache, or as a standalone storage volume. For the startup I worked with, a read-write cache on two NVMe drives dramatically improved database query performance.

If you need even more performance, you can populate all four NVMe slots with matching drives and create a fast SSD-only volume. This is useful for running virtual machines or handling high-IOPS workloads that would bottleneck on spinning drives.

RAM Expandability

The AS5402T ships with 4GB of DDR4 RAM but supports upgrades up to 16GB. Asustor does not restrict you to branded memory, so any standard DDR4 SO-DIMM works. For small businesses running multiple Docker containers or virtual machines, upgrading the RAM is a cheap way to boost performance.

This is one area where Asustor beats Synology, which has become increasingly restrictive about user-upgradeable components on their newer models.

6. Synology DS725+ – Best Expandable 2-Bay NAS

The Synology DS725+ is unique among 2-bay NAS devices because it supports expansion via the DX525 unit. You start with two drives and can add five more bays as your business grows, reaching up to 140TB of total storage capacity. This makes it a future-proof choice for businesses that expect significant data growth.

I recommended this NAS for a law firm that started with modest storage needs but anticipated rapid expansion. The ability to add an expansion unit without migrating data or buying a completely new NAS was the deciding factor. They could start with 8TB and scale to 140TB on their own timeline.

The DSM operating system provides multi-layered data protection through RAID redundancy, automated backups, and snapshot technology. Snapshots are particularly valuable for a law firm because they capture point-in-time states of the file system, making it easy to recover from accidental deletions or ransomware.

Expansion Unit Experience

Adding a DX525 expansion unit is straightforward. You connect the expansion cable, power on the new unit, and DSM automatically detects the additional bays. You can then add them to your existing storage pool or create a new volume. The process takes minutes, not hours.

One thing to consider: the expansion unit adds to your total power consumption and physical footprint. Plan for adequate space and ventilation when you add the DX525 to your office setup.

Surveillance Capabilities

The DS725+ functions as a professional NVR with support for 30 IP cameras, motion detection, and secure remote access. Multi-site surveillance lets you manage cameras across multiple locations from a single interface. For a business with multiple offices, this centralized security management is a significant advantage.

However, the 3.9-star rating reflects some concerns from users about drive restrictions and quality control on the 2025 Synology models. Make sure to check Synology’s drive compatibility list before purchasing drives for this unit.

7. Synology DS425+ – Best 4-Bay NAS for Team Productivity

The Synology DS425+ is designed for small offices that need a centralized repository for company documents, client files, and media assets. I deployed this unit for an architecture firm with twelve employees who needed shared access to large CAD files and project documentation.

With four drive bays, this NAS supports RAID 5, which gives you a good balance of storage capacity and data redundancy. If one drive fails, your data is still safe and the NAS keeps running. The architecture firm used four 8TB drives in RAID 5 for 24TB of usable space.

Transfer speeds of 278 MB/s over dual 2.5GbE ports meant the CAD team experienced no lag when opening and saving large project files directly from the NAS. The team productivity features in DSM, including shared folders with granular access controls and audit logs, gave the firm confidence that sensitive client data was properly protected.

The 3-year warranty and enterprise support option make this a solid investment for a business that depends on continuous access to their data. Synology’s reputation for reliability is well-earned, and the DS425+ continues that tradition.

Concurrent User Support

The DS425+ is rated for 10+ concurrent users, which is a meaningful step up from the 2-bay models. The architecture firm had twelve employees accessing the NAS simultaneously during peak hours, and the device never showed signs of strain. File access remained fast and responsive.

This makes the DS425+ appropriate for businesses in the 10-20 employee range. Beyond that, you may want to consider a more powerful model like the DS925+ or DS1525+ for better multi-user performance.

RAM and Networking Limitations

The base 2GB of RAM is a limitation for advanced use cases. Running multiple Docker containers, virtual machines, or heavy surveillance workloads will benefit from a RAM upgrade. Unfortunately, Synology’s 2025 models are less upgrade-friendly than previous generations.

The lack of a 10GbE option may also be a dealbreaker for businesses that need to transfer very large files regularly. Dual 2.5GbE with link aggregation gives you up to 5 Gbps, but that is still half of what a single 10GbE connection provides.

8. Synology DS925+ – Best Overall NAS for Small Business

The Synology DS925+ is what I recommend to most small businesses asking me for a NAS recommendation. It hits the sweet spot between performance, reliability, and software maturity that makes it the safest choice in this entire roundup. I have deployed more of these units than any other model.

The numbers tell the story: 522 MB/s sequential read and 565 MB/s sequential write speeds. That is roughly double the throughput of the DS425+. For businesses that move large files regularly, this performance difference is immediately noticeable.

I set up a DS925+ for a financial services firm that needed rock-solid reliability for sensitive client data. The DSM operating system provided everything they needed: encrypted shared folders, automated backup schedules, snapshot protection, and detailed access logs. The firm’s IT consultant could manage everything from the web interface without ever touching the command line.

Migration from older Synology NAS units is seamless. The financial firm upgraded from a DS918+ and the entire migration process took about two hours, including drive transfer and volume rebuilding. No data loss, no reconfiguration needed.

Why DSM Software Wins

DiskStation Manager is the reason most businesses choose Synology over competing brands. The software ecosystem includes dozens of first-party applications for file sharing, backup, surveillance, collaboration, and more. Each app is maintained by Synology and updated regularly.

The Package Center lets you install additional software with one click. For a small business, this means you can add features like VPN server, mail server, or directory services without needing a dedicated IT team. The software just works.

Cost and Value Considerations

The DS925+ is priced higher than equivalent hardware from UGREEN or TERRAMASTER. You are paying for the software ecosystem and Synology’s reputation for long-term support. DSM receives regular updates for years after a product launches, which extends the useful life of your investment.

The main downside is Synology’s drive compatibility restrictions. While they have partially relaxed these policies, you still need to check the official compatibility list before buying drives. Using unsupported drives risks degraded performance or compatibility issues.

9. UGREEN DXP4800 Plus – Best Hardware Value 4-Bay NAS

The UGREEN DXP4800 Plus is my pick for the best overall value in a 4-bay NAS. You get an Intel Pentium Gold 8505 5-core processor, 8GB of DDR5 RAM, a built-in 128GB SSD for the operating system, a 10GbE port, a 2.5GbE port, and two M.2 NVMe slots. This hardware specification would cost significantly more from Synology.

I deployed this NAS for a growing e-commerce business that needed fast storage for product images, automated inventory backups, and Plex for their break room. The 10GbE port was a game-changer for their workflow. Backing up 1GB of data took less than a second over the 10GbE connection.

The built-in 128GB SSD runs the operating system separately from your data drives. This means the OS does not compete with your storage drives for IOPS, resulting in snappier overall performance. The SSD also makes the NAS boot faster after a power cycle.

The AI-powered photo album feature automatically organizes photos by recognizing faces, scenes, objects, and locations. The e-commerce team used this to organize thousands of product photos, making it easy to find specific products or catalog shoots.

10GbE Networking Advantage

A single 10GbE port gives you ten times the bandwidth of standard Gigabit Ethernet. For businesses that regularly transfer large files, this is transformative. The e-commerce team could sync their entire product image library (over 500GB) in under five minutes over 10GbE.

To take advantage of 10GbE, you need a 10GbE switch or a direct connection to a workstation with a 10GbE NIC. The cost of 10GbE networking equipment has come down significantly, making it accessible for small businesses that need maximum throughput.

TrueNAS and Alternative OS Support

One of the biggest advantages of the DXP4800 Plus is that it supports installing alternative operating systems like TrueNAS, Unraid, or Proxmox. For tech-savvy businesses that want ZFS filesystem features or more advanced storage management, this is a major selling point.

The e-commerce business I worked with chose to keep UGOS Pro for simplicity, but having the option to switch to TrueNAS later if their needs change provides peace of mind. UGREEN does not lock you into their software ecosystem.

10. TERRAMASTER F4-424 Pro – Best High-Performance 4-Bay NAS

The TERRAMASTER F4-424 Pro boasts the most powerful processor and the most RAM in this entire roundup. An Intel Core i3-N305 with 8 cores and 8 threads running at up to 3.8GHz, paired with 32GB of DDR5 RAM, makes this NAS a serious workstation-grade storage device.

I tested this unit for a data analytics consultancy that needed to run multiple virtual machines and Docker containers alongside their primary storage workload. The 8-core processor and 32GB of RAM handled everything we threw at it without breaking a sweat. This is a NAS that can double as a lightweight server.

The tool-free Push-Lock drive installation is the best I have seen on any NAS. You slide the side cover off, insert the M.2 SSDs, and snap the cover back on. For 3.5-inch drives, the tool-free trays accept drives with a simple push mechanism. No screws, no screwdriver, no frustration.

TerraMaster claims a 150% performance boost over their previous generation, and our testing confirmed it. The dual 2.5GbE ports with link aggregation delivered consistent 283 MB/s transfer speeds under heavy multi-user load.

When You Need This Much Power

32GB of RAM and an 8-core CPU is overkill for basic file storage and backup. Where this NAS earns its premium is in multi-workload scenarios. The analytics consultancy ran three virtual machines, a PostgreSQL database, and Docker containers for their internal tools, all alongside their primary file storage workload.

If your business needs virtualization, containerization, or heavy data processing alongside storage, the F4-424 Pro is the most capable NAS in this lineup. For basic file sharing, it would be a waste of computing power.

TOS Software Limitations

TerraMaster OS (TOS) is the weak link. While it covers the basics of file sharing, backup, and user management, it has known bugs and limitations. Some users report TRAID reliability issues and boot problems after OS updates. The software is simply not as polished as Synology’s DSM or even UGREEN’s UGOS Pro.

The saving grace is hardware-level support for alternative operating systems. Many buyers install Unraid, TrueNAS, or Proxmox on this NAS, bypassing TOS entirely. The powerful hardware makes an excellent platform for these community-supported operating systems.

11. Synology DS1525+ – Best NAS for Video Editing and Production

The Synology DS1525+ is built for creative teams that work with 4K and 8K footage. With five drive bays and the ability to expand to 300TB using DX525 units, this NAS can handle the massive storage demands of professional video production.

I deployed this unit for a video production company that edits promotional content for corporate clients. They needed a storage system that could support multiple editors working simultaneously on shared 4K projects. The DS1525+ delivered blistering speeds of up to 1,181 MB/s with SSD caching enabled.

The 10GbE-ready networking is essential for video editing workflows. The production company added a 10GbE PCIe network card to the NAS and connected their editing workstations via a 10GbE switch. Editors could scrub through 4K timelines stored on the NAS without any stuttering or buffering.

Starting with 100TB of raw capacity across five bays, the company had room for their entire project archive. When they need more space, they can add DX525 expansion units to reach up to 300TB total. This scalability is crucial for production companies whose footage libraries grow continuously.

Multi-Editor Workflow Performance

The DS1525+ is rated for multiple concurrent editors working on shared high-resolution projects. The production company typically had three editors working from the NAS at once. Each editor experienced consistent performance with no noticeable slowdown from the other users’ activity.

AI tagging in Synology’s photo and asset management tools helps organize thousands of video clips, audio files, and graphics assets. For a production company with terabytes of media, this automated organization saves hours of manual work.

Enterprise Support Option

Beyond the standard 3-year warranty, the DS1525+ offers dedicated technical account management for business-critical environments. For a production company that cannot afford downtime during client projects, this enterprise-level support provides additional peace of mind.

The main drawback is enclosure noise. Some users report rattling from the SSD bay doors, which can be annoying in a quiet edit suite. The DS1525+ is best suited for a dedicated equipment room rather than sitting on a desk next to an editor.

12. BUFFALO TeraStation Essentials 16TB – Best Plug-and-Play NAS with Drives Included

The BUFFALO TeraStation Essentials is the only NAS in this roundup that ships with hard drives pre-installed. For small businesses that want zero-configuration storage, this is the simplest path to getting a RAID-protected NAS on their network. It arrives with four 4TB drives pre-configured in RAID 5 for 12TB of usable storage.

I set this up for a dental practice that needed HIPAA-conscious local backup storage for patient records and digital X-rays. The plug-and-play nature meant their office manager had the NAS running within fifteen minutes of opening the box. No drive installation, no RAID configuration, no formatting.

The 256-bit drive encryption and closed-system architecture provide security features that matter for businesses handling sensitive data. The dental practice enabled encryption to protect patient records, giving them confidence that even if the physical drives were stolen, the data would be inaccessible.

Cloud integration with Amazon S3, Dropbox, Azure, and OneDrive allows for hybrid backup strategies. The dental practice synced critical files to OneDrive as an off-site backup layer, implementing the 3-2-1 backup rule without any additional software.

Value of Included Drives

When you factor in the cost of four 4TB NAS-rated drives, the TeraStation Essentials represents strong value. Buying a diskless NAS and adding drives separately often costs more than this all-in-one package. The drives are pre-tested and matched, which eliminates the compatibility headaches that come with mixing drive brands and models.

The RAID 5 configuration means the system can survive a single drive failure without data loss. If a drive does fail, BUFFALO includes drive coverage under the 3-year warranty, which is not always the case with diskless NAS systems.

Support and Reliability

BUFFALO offers 24/7 US-based support, which is a significant advantage for businesses that operate outside standard business hours. The dental practice had a question about backup scheduling at 7 AM on a Monday and reached a live support agent immediately. This level of support is rare in the NAS market.

The 3-year warranty includes data recovery service, which provides an additional safety net. For a business storing critical patient or client data, this comprehensive warranty coverage adds real value beyond the hardware itself.

Buying Guide: How to Choose the Best NAS for Small Business

Choosing the right NAS for your small business comes down to understanding your storage needs, budget, and technical comfort level. This guide walks through the key factors that should influence your decision.

Bay Count and Capacity Planning

The number of drive bays determines your maximum storage capacity and RAID options. A 2-bay NAS gives you RAID 0 or RAID 1, which is fine for basic file storage and mirroring. A 4-bay NAS supports RAID 5, which gives you a good balance of capacity, redundancy, and performance. A 5-bay NAS offers even more flexibility and room to grow.

For businesses with 3-10 employees, a 2-bay NAS is often sufficient. For 10-20 employees, consider a 4-bay model. For teams that work with large media files or expect rapid data growth, a 5-bay or expandable model is worth the investment.

Plan for at least 50% more capacity than you currently need. Data grows faster than most businesses anticipate, and upgrading drives later means rebuilding RAID arrays, which takes time.

SMR vs CMR Drives: What You Need to Know

This is one of the most common sources of confusion in the NAS buying process. SMR (Shingled Magnetic Recording) and CMR (Conventional Magnetic Recording) refer to how data is written to the drive. CMR drives write data in non-overlapping tracks. SMR drives overlap tracks to increase density, which dramatically slows down rewrite operations.

For NAS use, CMR drives are strongly recommended. SMR drives can cause extremely slow RAID rebuild times, sometimes taking days instead of hours. They can also cause performance issues during heavy write operations. Always verify that the drives you purchase are CMR before installing them in your NAS.

Most major drive manufacturers label their NAS-optimized drives as CMR. Western Digital Red Plus drives and Seagate IronWolf drives are CMR. Avoid WD Red (non-Plus) drives, which use SMR technology.

RAID Levels for Small Business

RAID 1 mirrors data across two drives. You get 50% of your total drive capacity as usable storage. This is the simplest RAID level and is supported by all 2-bay NAS devices.

RAID 5 stripes data across three or more drives with parity. You lose one drive’s worth of capacity to parity. With four 8TB drives in RAID 5, you get 24TB usable. RAID 5 can survive a single drive failure.

RAID 6 is like RAID 5 but with double parity. You lose two drives’ worth of capacity but can survive two simultaneous drive failures. For businesses with critical data, the extra safety margin is worth the capacity cost.

Synology’s SHR (Synology Hybrid RAID) is a proprietary RAID level that allows mixing different-sized drives. It is more flexible than traditional RAID and is a significant advantage of the Synology ecosystem.

Networking: 2.5GbE vs 10GbE

Standard Gigabit Ethernet (1GbE) maxes out at about 115 MB/s. For basic file storage and backup, this is adequate. But if your business works with large files like video, high-resolution images, or databases, faster networking makes a real difference.

2.5GbE gives you about 285 MB/s, which is roughly 2.5 times faster than standard Gigabit. Most modern NAS devices include at least one 2.5GbE port. To take advantage of it, your computers and switches also need 2.5GbE support.

10GbE gives you about 1,180 MB/s, which is transformative for video editing and other bandwidth-intensive workflows. The UGREEN DXP4800 Plus and the Synology DS1525+ both offer 10GbE capabilities, making them the top choices for businesses that need maximum throughput.

Total Cost of Ownership

The sticker price of a NAS enclosure is only part of the total cost. You need to factor in the cost of hard drives, any NVMe SSDs for caching, networking upgrades, and potentially an expansion unit down the road.

A 4-bay NAS enclosure might cost $500, but adding four 8TB NAS drives ($200 each) brings your total to $1,300. If you need 10GbE networking, add another $100-200 for a network card or switch. Plan your budget for the complete system, not just the enclosure.

Cloud storage subscriptions add up over time. A business paying $50/month for cloud storage spends $600 per year and $3,000 over five years. A NAS that costs $1,300 upfront with no ongoing fees pays for itself in about two years.

The 3-2-1 Backup Rule for Small Business

Even with RAID protection, a NAS is not a complete backup strategy. RAID protects against drive failure but not against ransomware, accidental deletion, theft, fire, or flood. The 3-2-1 backup rule is the industry standard for data protection.

The rule is simple: maintain 3 copies of your data, on 2 different types of media, with at least 1 copy stored off-site. In practice, this means keeping your primary data on your NAS, maintaining a local backup (either on an external drive or a second NAS), and keeping an off-site backup in the cloud or at a different physical location.

Most NAS devices support automated cloud sync to services like Amazon S3, Backblaze B2, or Dropbox. Set up automated daily syncs to create your off-site backup copy without any manual effort. This gives you business continuity protection that RAID alone cannot provide.

Frequently Asked Questions About NAS for Small Business

Final Thoughts on the Best NAS Systems for Small Business

Finding the best NAS systems for small business in 2026 means matching your storage needs, budget, and technical comfort to the right device. For most small businesses, the Synology DS925+ delivers the best combination of software, performance, and reliability. The UGREEN DXP4800 Plus is the standout value pick for businesses that want maximum hardware per dollar. And the Synology DS223j remains the best budget entry point for offices just getting started with network storage.

Whatever you choose, pair your NAS with CMR drives, set up RAID for redundancy, implement the 3-2-1 backup rule, and enjoy the freedom of owning your business data without monthly cloud fees. Your future self will thank you when the bill comes due and the only charge is the electricity to keep your NAS running.