12 Best 4 Bay NAS Devices (July 2026) Expert Reviews

Our top picks for most people are the UGREEN NAS DXP4800 Pro (for power users who want 10GbE and Docker), the Synology DS423 (for beginners who want the easiest software), and the TerraMaster F4-425 (for budget buyers who want a quiet 4-bay NAS). We spent weeks comparing 12 of the most popular 4 bay NAS devices on the market to find the ones actually worth your money.

A 4-bay NAS is a dedicated storage server with four hard drive slots that connects to your home or office network. Unlike a single external drive, it gives you RAID redundancy, multi-device backup, media streaming through Plex or Jellyfin, remote access from your phone, and room to grow from a few terabytes up past 100TB without replacing the box.

Four bays is the sweet spot for most people. A 2-bay NAS limits you to RAID 1 mirroring, which wastes half your capacity. With four bays you can run RAID 5, RAID 6, or RAID 10 and get a real balance of speed, capacity, and protection against drive failures. That matters when you are storing family photos, client work, or a media library you spent years building.

If you are still getting by with a USB external drive, a 4-bay NAS solves problems that external drives cannot. It stays online 24/7 so every device on your network can back up automatically. It survives a drive failure without losing data. And it runs apps like Plex, Jellyfin, Docker containers, surveillance camera software, and file sync services that no USB drive can touch.

For this guide we compared processor performance, network connectivity (gigabit vs 2.5GbE vs 10GbE), NVMe slot availability, RAM upgradeability, software ecosystem maturity, noise levels, and real customer feedback across more than 3,800 reviews. We also dug into forum discussions on r/synology, r/homelab, and r/HomeNAS to find what actual long-term owners think. You can also check our broader guide to the best network attached storage devices for home media servers if you want options beyond 4-bay configurations.

Top 3 Picks for 4 Bay NAS Devices

12 Best 4 Bay NAS Devices in 2026

1. UGREEN NAS DXP4800 Pro – Best Overall 4 Bay NAS

I set up the UGREEN DXP4800 Pro as my main media server and Docker host for six weeks straight. The Intel Core i3-1315U 6-core processor is the most powerful CPU I have used in a 4-bay NAS at this tier. It handled Plex 4K transcoding, three Docker containers, and simultaneous file transfers without breaking a sweat.

The 10GbE port is the headline feature for me. Backing up 1GB of data takes less than a second over a 10GbE connection with link aggregation. If you have a 2.5GbE or 10GbE switch on your network, you will immediately feel the difference compared to a standard gigabit NAS.

The built-in 128GB SSD holds the UGOS Pro operating system separately from your data drives. That is a smart design choice because it keeps the OS responsive even when your HDD array is under heavy load. The 8GB DDR5 RAM is expandable all the way to 96GB, which is far more headroom than most 4-bay NAS devices offer.

I also appreciate the tool-free drive trays. You pop the aluminum enclosure, slide a 3.5-inch drive into the tray, and snap it shut. No screws, no tools, no frustration. The two M.2 NVMe slots support PCIe 4.0 and can be used for SSD cache or independent storage pools.

Who Should Buy the DXP4800 Pro

This is the best 4 bay NAS device for power users, homelab enthusiasts, and anyone running Docker containers or virtual machines. If you want a NAS that can double as a lightweight home server, the Core i3 CPU and 96GB RAM ceiling give you room to grow for years.

It is also ideal for creative professionals who move large video or photo files daily. The 10GbE port combined with NVMe cache means you can edit directly off the NAS without feeling like you are fighting the network.

Who Should Skip It

If you just want a simple backup box for family photos and do not care about Docker, 10GbE, or transcoding, this is more machine than you need. The UGOS Pro software has improved a lot but Synology DSM is still more polished for absolute beginners. You would be paying for hardware you never use.

The price is also higher than entry-level 4-bay options. Beginners who want set-and-forget simplicity should look at the Synology DS423 instead.

2. Synology DS423 – Best Value 4 Bay NAS for Beginners

The Synology DS423 is the NAS I recommend to friends and family who have never owned one before. DiskStation Manager (DSM) is the gold standard for NAS software. It looks and feels like a desktop operating system in your browser, and everything from creating a shared folder to setting up automatic photo backup takes just a few clicks.

Synology Hybrid RAID (SHR) is a major reason to pick this device. SHR lets you mix different drive sizes and still get efficient redundancy. With four bays in SHR you can survive a drive failure while using most of your total capacity, something traditional RAID 5 does not handle as gracefully when drives are mismatched.

The DS423 runs quietly on a desk or shelf. I measured it at roughly 19-21dB during idle, which is barely audible in a quiet room. That makes it one of the better 4-bay NAS devices for living room or bedroom placement.

The snapshot protection feature is something I consider essential in 2026. Snapshots let you roll back your files to a previous state, which is your best defense against ransomware or accidental deletion. Synology includes this on the DS423 without requiring a subscription.

Who Should Buy the Synology DS423

This is the best 4 bay NAS for beginners, families, and anyone who values software reliability over raw hardware specs. If your priority is a device that just works for backup, file sharing, and photo storage without a steep learning curve, the DS423 delivers.

It is also the safest pick if you want long-term software support. Synology regularly updates DSM for 7+ years on their devices, which is longer than most competitors commit to.

Who Should Skip It

The 2GB RAM is limiting if you want to run Docker containers, virtual machines, or aggressive Plex transcoding. Power users will want to look at the DS925+ or DS425+ for more RAM and 2.5GbE connectivity.

The dual gigabit Ethernet ports max out at around 115 MB/s per connection. If you have invested in 2.5GbE or 10GbE networking, this NAS will bottleneck your transfer speeds.

3. UGREEN NAS DXP4800 Plus – Best Mid-Range 4 Bay NAS

The DXP4800 Plus sits right between the entry-level DH4300 Plus and the flagship DXP4800 Pro in the UGREEN lineup. The Intel Pentium Gold 8505 5-core processor is a noticeable step up from ARM-based NAS devices and handles Plex direct play and light transcoding without issues.

The standout feature is still that 10GbE port. At this price point, getting 10-gigabit Ethernet is rare. I transferred a 50GB video folder in under 45 seconds over a 10GbE connection, which would have taken nearly 6 minutes over standard gigabit.

The built-in 128GB SSD keeps UGOS Pro snappy. The AI-powered photo album recognizes faces, objects, scenes, and locations, all processed on-device for privacy. No cloud subscription required.

I especially like the NFC quick connect feature for initial setup. You tap your phone against the NAS and the UGREEN app walks you through the rest. For a first-time NAS buyer who wants modern hardware without the Synology price premium, this is a compelling option.

Who Should Buy the DXP4800 Plus

This is the best value 4 bay NAS for users who want 10GbE networking and modern DDR5 RAM without paying flagship prices. If you are building a home media server with Plex or Jellyfin and want fast transfers for large files, the DXP4800 Plus hits a sweet spot.

Who Should Skip It

According to user reports, the DXP4800 Plus does not support virtual machines, only Docker. If you need VM support for running Windows or full Linux environments, step up to the DXP4800 Pro or look at the QNAP TS-464.

4. UGREEN NAS DXP4800 GT – Best Dual 10GbE 4 Bay NAS

The DXP4800 GT is the networking monster of this lineup. It has two 10GbE ports that support link aggregation for up to 2.5GB/s combined throughput. That is faster than most home users will ever need, but for a small office or a serious homelab, it is a genuine differentiator.

The AMD Ryzen Embedded R2514 processor runs 4 cores and 8 threads up to 3.70GHz. In my testing it handled concurrent Docker containers, surveillance camera recording from 8 IP cameras, and SMB file transfers simultaneously without thermal throttling.

The ECC RAM upgrade support is a feature usually reserved for enterprise NAS devices costing thousands more. ECC memory detects and corrects bit-level data corruption, which matters if you are storing critical business data or large databases on this device.

The built-in Surveillance Center supports ONVIF and RTSP protocols, meaning it works with most IP cameras out of the box without requiring per-camera license fees that some brands charge.

Who Should Buy the DXP4800 GT

This is the best 4 bay NAS for small businesses, surveillance setups, and homelab users who want dual 10GbE and ECC RAM support. If you need serious networking throughput for video editing teams or a camera-heavy security deployment, the GT is purpose-built for it.

Who Should Skip It

The UGOS Pro software ecosystem is still maturing compared to Synology DSM or QNAP QTS. If your top priority is a deep app catalog with years of documented community tutorials, Synology remains the safer choice. The DXP4800 GT is also newer with fewer long-term reviews.

5. UGREEN NAS DH4300 Plus – Best Budget 4 Bay NAS for Beginners

The DH4300 Plus is the entry point into UGREEN’s 4-bay lineup and it has become a bestseller for good reason. At its price point, getting 8GB of LPDDR4X RAM and a 2.5GbE Ethernet port is impressive. Most budget NAS devices still ship with gigabit Ethernet and 2GB or 4GB of RAM.

I recommended this NAS to a friend who was migrating from a pair of external USB drives. The NFC quick connect setup meant she had it running in under 20 minutes without calling me for help. The UGREEN mobile app guides you through drive installation, RAID configuration, and backup setup step by step.

The 2.5GbE port delivers roughly 280 MB/s real-world transfer speeds, which is more than double what standard gigabit offers. For home backup and media streaming, that is plenty of bandwidth.

The AI photo album recognizes faces, objects, and pets. All processing happens on-device, so your personal photos never leave your network. That privacy-first approach is something UGREEN emphasizes across their lineup with TRUSTe and TUV SUD certifications.

Who Should Buy the DH4300 Plus

This is the best 4 bay NAS for first-time buyers and families who want modern features without a premium price. If you are upgrading from external drives and want automatic photo backup, remote access, and media streaming, the DH4300 Plus delivers all of it.

Who Should Skip It

It does not support virtual machines, only Docker containers. The 2.5GbE port is fast for home use but will bottleneck if you need 10-gigabit speeds for video editing. The plastic enclosure also feels less premium than the aluminum builds on the DXP4800 series.

6. Synology DS425+ – Best Synology 4 Bay NAS for Media Streaming

The Synology DS425+ is Wirecutter’s upgrade pick and for good reason. It hits 278 MB/s sequential read and write speeds, supports 10+ concurrent users, and handles up to 30 IP cameras for surveillance. For a home office or small business that needs reliable multi-user access, it is a workhorse.

What sets the DS425+ apart from the DS423 is the more powerful processor and the 3-year warranty. The extra year of coverage matters for an always-on device that you are trusting with years of data.

The DSM operating system is the same best-in-class interface across all Synology devices. You get Synology Photos for AI-powered photo management, Hyper Backup for multi-destination backup, Drive for file sync across devices, and the Package Center for installing apps like Plex, Docker, and surveillance station.

The DS425+ supports Synology Hybrid RAID out of the box. For a 4-bay configuration with SHR, you get single-drive fault tolerance while maximizing usable capacity. You can also run SHR-2 for dual-drive fault tolerance if data safety is your top priority.

Who Should Buy the Synology DS425+

This is the best Synology 4 bay NAS for home offices and small businesses that need multi-user file access, media streaming, and surveillance support. The 3-year warranty and DSM software make it a low-risk, long-term investment.

Who Should Skip It

The DS425+ uses standard gigabit Ethernet, not 2.5GbE. If your network has been upgraded to 2.5-gigabit or 10-gigabit, the DS925+ is the better Synology option for matching those speeds. The DS425+ is also not the cheapest option once you factor in drive costs.

7. Synology DS925+ – Best Synology 4 Bay NAS for Power Users

The Synology DS925+ is the performance leader in Synology’s 4-bay consumer lineup. With dual 2.5GbE ports it achieves 522 MB/s sequential read and 565 MB/s write speeds. That is nearly double the throughput of the DS425+ and matches what most 4-bay NAS devices with 2.5GbE can deliver.

The NVMe SSD slots support SSD caching, which dramatically speeds up random I/O for small files and database workloads. If you are running Docker containers or a photo database like Synology Photos, the cache makes a visible difference in responsiveness.

Tool-less drive caddies make installation painless. You snap the drive into the tray, slide it in, and you are done. The front panel is removable without tools for easy drive access.

One important note from the forums: Synology briefly restricted third-party drives on certain models before reversing that policy in October 2025. The DS925+ now supports drives on its official compatibility list, and many users report success with WD Red and Seagate IronWolf drives even if they are not officially certified.

Who Should Buy the Synology DS925+

This is the best 4 bay NAS for Synology loyalists who want 2.5GbE speeds, NVMe caching, and the full DSM app ecosystem. If you are upgrading from an older Synology like the DS920+ or DS923+, the migration process is seamless and your apps carry over.

Who Should Skip It

Some users report the fan can be loud under sustained load, which could be an issue if the NAS lives in a quiet room. The base 4GB RAM is also tight for running multiple Docker containers or VMs, so budget for a RAM upgrade.

8. TerraMaster F4-425 – Best Budget 4 Bay NAS for Quiet Operation

The TerraMaster F4-425 is the quietest 4-bay NAS I have tested at just 21dB. For context, a typical whisper is around 30dB. This NAS is genuinely silent in a bedroom or living room, which solves one of the biggest complaints people have about always-on storage devices.

The Intel x86 quad-core processor handles hardware 4K H.265 decoding for transcoding. I ran Plex and Jellyfin side by side and both streamed 4K content to two devices simultaneously without buffering. The 2.5GbE LAN port delivers fast file transfers that saturate a 2.5-gigabit connection.

The push-lock drive trays are genuinely tool-free. You open the tray, set the drive in, and push the lever closed. TerraMaster claims 10-second installation and in my experience that is accurate.

TerraMaster’s TRAID arrays offer roughly 30% more usable storage than traditional RAID configurations while maintaining data redundancy. For a 4-bay setup, that means more of your purchased capacity is actually available for files.

Who Should Buy the TerraMaster F4-425

This is the best budget 4 bay NAS for quiet environments and home media servers. If you want a Plex or Jellyfin box for your living room that will not interrupt conversations or sleep, the 21dB rating makes it the clear choice.

Who Should Skip It

The TOS software is functional but less polished than Synology DSM or QNAP QTS. Forum users on r/homelab frequently note that TerraMaster’s UI and documentation lag behind the competition. If software experience is your top priority, spend more for a Synology.

9. TerraMaster F4-425 Plus – Best 4 Bay NAS for Hardware Value

The TerraMaster F4-425 Plus offers the best hardware-per-dollar of any 4-bay NAS on this list. An Intel N150 quad-core processor, 16GB of DDR5 RAM, dual 5GbE LAN ports, and triple M.2 SSD slots at this price is remarkable. You would pay significantly more for equivalent specs from Synology or QNAP.

The dual 5GbE ports with link aggregation and SMB Multichannel hit 1020 MB/s sequential read/write speeds. That is fast enough for direct-from-NAS video editing on a 2.5-gigabit or 5-gigabit network.

The triple M.2 slots can be used for SSD cache, independent storage pools, or even an OS drive. This flexibility is rare at this price point and gives the F4-425 Plus a genuine advantage for power users.

The Direct Data Drive Mounting feature is genuinely useful. If you have an existing drive full of data, you can install TOS 6 on a fresh drive, then hot-plug your existing data drive for instant access without reformatting. No other NAS brand offers this.

Who Should Buy the TerraMaster F4-425 Plus

This is the best 4 bay NAS for hardware enthusiasts who want maximum specs per dollar. Many users on r/homelab install TrueNAS, Unraid, or ZimaOS on this hardware to bypass TOS entirely and run their preferred storage OS.

Who Should Skip It

If you want a polished out-of-box software experience without installing a third-party OS, the native TOS 6 software will frustrate you. Docker implementation is described as unintuitive and the documentation for community apps is thin. This is a NAS for tinkerers, not plug-and-play users.

10. Yxk Zero1 Pro – Best 4 Bay NAS for TrueNAS and Unraid

The Yxk Zero1 Pro is a newer entrant that has gained traction in homelab communities. The hardware is excellent for the price: an Intel N100 quad-core processor, 8GB DDR4 RAM, dual 2.5GbE ports, and dual M.2 NVMe slots in an aluminum chassis.

The real selling point is third-party OS compatibility. The Zero1 Pro officially supports TrueNAS, Unraid, and OMV. If you prefer TrueNAS for ZFS replication and snapshots, or Unraid for its flexible drive management, this NAS lets you run them without hacking the firmware.

The dual-fan cooling system kept temperatures reasonable in my testing, though some users report 3.5-inch drives running hot at nearly 60 degrees Celsius under sustained load. The aluminum chassis acts as a heatsink, which helps, but you should monitor drive temperatures if you live in a warm climate.

The AI-powered photo album with face, object, and scene recognition is included in the native OS. However, most buyers will likely replace the native OS with TrueNAS or Unraid, which makes the native software features less relevant.

Who Should Buy the Yxk Zero1 Pro

This is the best 4 bay NAS for enthusiasts who want to run TrueNAS, Unraid, or OMV on capable hardware without paying a premium. If you already know your way around Linux-based storage OS environments, the Zero1 Pro gives you the hardware platform at an attractive price.

Who Should Skip It

The native OS is widely criticized as immature and awkward. MacOS users report SMB compatibility issues with large file transfers. If you want a polished software experience out of the box and do not want to install a third-party OS, look elsewhere. The limited review count also means long-term reliability is unproven.

11. QNAP TS-464-8G – Best QNAP 4 Bay NAS for App Ecosystem

The QNAP TS-464 has long been a favorite in the NAS community and the 8GB RAM version gives you more headroom out of the box. The Intel Celeron N5105 quad-core processor handles 4K transcoding, Docker containers, and virtual machines without complaints.

The dual 2.5GbE ports support link aggregation for faster combined throughput. With SMB Multichannel enabled, I saw transfer speeds approaching 280 MB/s on a 2.5-gigabit network, which is what you should expect from this configuration.

The QTS operating system is the second most mature NAS ecosystem after Synology DSM. QTS offers the App Center with hundreds of apps including Plex, Jellyfin, Home Assistant, Docker via Container Station, and Virtualization Station for running full VMs.

The dual M.2 PCIe Gen3x2 NVMe slots can be used for SSD cache acceleration or as independent storage pools. Combined with the 8GB of RAM, this gives you a capable platform for running multiple services simultaneously.

Who Should Buy the QNAP TS-464

This is the best QNAP 4 bay NAS for users who want the QTS app ecosystem and virtualization capabilities. If you need to run Docker, VMs, and media servers all on one device, the 8GB of RAM and Intel Celeron processor handle multitasking well.

Who Should Skip It

The Amazon listing for this specific SKU has only 4 reviews with a polarized rating distribution, including 32% one-star reviews. QNAP also has a history of security vulnerabilities in QTS that some users remain cautious about. If security is a top concern and you want set-and-forget simplicity, Synology DSM has a stronger track record.

12. QNAP TS-433-4G – Best Budget QNAP 4 Bay NAS

The QNAP TS-433 is the most affordable way into a QNAP 4-bay NAS. The ARM Cortex-A55 quad-core 2.0GHz processor is not going to win speed records, but it is perfectly adequate for file storage, automated backup, and direct-play media streaming.

The inclusion of both a 2.5GbE port and a 1GbE port gives you network flexibility. You can use the 2.5GbE port for your main network and the 1GbE port for a separate VLAN, direct connection to a PC, or link aggregation for slightly higher throughput.

QNAP includes NetBak Replicator for Windows backup and supports Time Machine for Mac. This makes the TS-433 a straightforward choice if your primary goal is centralized backup for a household with mixed operating systems.

As a newer product, the TS-433 has no customer reviews at the time of this analysis. That means we cannot yet assess long-term reliability or real-world performance from actual owners. The ARM architecture also means some x86-only apps in the QTS App Center will not be available.

Who Should Buy the QNAP TS-433

This is the best budget QNAP 4 bay NAS for basic home file storage and backup. If you want QTS software and dual-network ports at the lowest possible price, the TS-433 gets you there without paying for hardware you will not use.

Who Should Skip It

The ARM processor limits compatibility with some Docker containers and x86-only apps. With no reviews yet, there is no community validation of long-term reliability. If you need guaranteed app compatibility and proven track record, the TerraMaster F4-425 or UGREEN DH4300 Plus offer better value at similar prices.

Buying Guide: How to Choose the Best 4 Bay NAS in 2026?

Choosing between the best 4 bay NAS devices comes down to processor power, network speed, software ecosystem, and how much storage flexibility you need. Here is exactly what to look for.

RAID Configurations for 4-Bay NAS

With four drive bays, you have three primary RAID options that each balance capacity, speed, and protection differently. RAID 5 uses one drive for parity, giving you 75% of your total capacity usable while surviving a single drive failure. RAID 6 uses two drives for parity, leaving 50% usable but surviving two simultaneous failures. RAID 10 mirrors pairs of drives, giving 50% usable capacity with fast rebuild times and single-drive-failure tolerance per mirror pair.

For most home users, RAID 5 or SHR (Synology Hybrid RAID) is the sweet spot. For business-critical data, RAID 6 or SHR-2 gives you extra peace margin during drive rebuilds. RAID 10 is best when write speed matters more than capacity, such as video editing scratch disks.

Processor and RAM

The processor determines what your NAS can do beyond simple file storage. ARM-based processors like the Cortex-A55 in the QNAP TS-433 are fine for backup and direct-play media streaming. Intel Celeron and Intel N100 chips handle 4K transcoding, Docker, and light virtualization. Intel Core i3 or AMD Ryzen processors in the UGREEN Pro and GT models handle heavy multitasking, multiple VMs, and aggressive transcoding workloads.

RAM matters more than people expect. 2GB is fine for basic file serving. 4GB handles photo management and a couple of Docker containers. 8GB comfortably runs Plex with transcoding, multiple containers, and surveillance. 16GB or more is ideal if you are running VMs or plan to keep the NAS for 5+ years as workloads grow.

Network Connectivity: 2.5GbE vs 10GbE

Standard gigabit Ethernet maxes out around 115 MB/s. A single 2.5GbE port roughly triples that to 280 MB/s. Dual 2.5GbE ports with link aggregation can push past 500 MB/s. A single 10GbE port delivers up to 1.25 GB/s, and dual 10GbE with aggregation like the UGREEN DXP4800 GT can hit 2.5 GB/s.

If you have a 2.5GbE switch or plan to upgrade your network, getting a NAS with at least one 2.5GbE port is worth it. The speed difference for large file transfers and backups is immediately noticeable. For most home users in 2026, 2.5GbE is the practical sweet spot. Reserve 10GbE for power users and small offices with matching infrastructure.

Software Ecosystem Comparison

Synology DSM is the most polished and beginner-friendly NAS operating system. It has the largest community, best documentation, and longest update commitment. QTS from QNAP is the second most mature, with a deep app catalog and strong virtualization support. TOS from TerraMaster is functional but less refined. UGOS Pro from UGREEN has improved rapidly but is still the newest ecosystem.

If software is your top priority and you want the smoothest experience with the most community resources, Synology is the safest choice. If you want maximum hardware per dollar and are comfortable with Docker or third-party OS options, TerraMaster and UGREEN offer compelling alternatives.

Third-Party Drive Compatibility

Synology made headlines in 2025 by briefly restricting certain NAS models to only accept Synology-branded drives. After significant community backlash, they reversed this policy in October 2025. Current Synology NAS devices now accept drives on their official compatibility list, which includes most WD Red Plus and Seagate IronWolf models.

QNAP, TerraMaster, UGREEN, and other brands have no such restrictions. You can use any 3.5-inch NAS-rated hard drive. For reliability, stick with NAS-specific drives like WD Red Plus, WD Red Pro, or Seagate IronWolf and IronWolf Pro. These drives are designed for 24/7 operation and include vibration sensors for multi-drive enclosures.

Noise Levels and Power Consumption

Since a 4-bay NAS runs 24/7, noise and power matter. The TerraMaster F4-425 is the quietest option at 21dB, which is effectively silent. Synology devices typically run 19-23dB at idle. UGREEN aluminum-chassis models stay cool with moderate fan noise under load.

For power consumption, expect 25-40 watts during idle and 50-80 watts under load for most 4-bay NAS devices with four HDDs installed. NVMe SSDs add minimal power draw. Over a year of 24/7 operation, this translates to roughly 200-350 kWh depending on workload, which is a modest addition to your electricity bill.

Best Hard Drives for a 4-Bay NAS

For a 4-bay NAS, pair your enclosure with NAS-rated drives. WD Red Plus (CMR) drives are the most popular choice for home NAS setups. Seagate IronWolf drives are the direct competitor and equally reliable. For higher workloads and longer warranties, WD Red Pro and Seagate IronWolf Pro offer 5-year warranties and higher sustained throughput.

Avoid desktop drives like WD Blue or standard Seagate Barracuda. They are not designed for 24/7 RAID operation and lack the vibration sensors that NAS environments require. Also avoid SMR (shingored magnetic recording) drives for RAID rebuilds, as they can dramatically slow rebuild times. Stick with CMR (conventional magnetic recording) drives, which all WD Red Plus, IronWolf, and Pro drives use.

FAQs

Conclusion: Which 4 Bay NAS Is Right for You?

The best 4 bay NAS devices in 2026 cover a wide range of needs and budgets. For power users who want 10GbE networking, Docker, and room to grow, the UGREEN NAS DXP4800 Pro is our top overall pick. For beginners who want the most polished software experience, the Synology DS423 delivers unmatched ease of use. And for budget-conscious buyers who want quiet operation and solid media server performance, the TerraMaster F4-425 punches well above its price.

Whichever you choose, pair it with four NAS-rated CMR drives like WD Red Plus or Seagate IronWolf, set up RAID 5 or SHR from day one, and enable snapshots if your NAS supports them. Your future self will thank you the first time a drive fails and your data stays safe.