Best NAS Under $500 in 2026: 4 Picks for Home Lab

The $500 mark is where NAS hardware gets interesting. Below it, you still get quad-core Intel CPUs with Quick Sync transcoding, 2.5GbE networking, and enough horsepower to run Docker containers alongside file serving. Above it, you’re paying for premium software ecosystems (Synology DS925+ at ~$625) or raw power you may not need (TerraMaster F4-424 Pro at ~$860).

This guide covers four NAS devices that list at or under $500. Every pick handles a different use case: Plex transcoding, Docker hosting, pure file storage, or beginner-friendly home backup. If you’re building a home lab NAS setup on a budget, one of these will fit.

The Synology DS423+ puts a 4-bay “Plus” model right at the budget line. UGREEN’s DH4300 Plus brings ARM-based competition with 8 GB RAM at ~$380, while ASUSTOR and TerraMaster supply faster networking at lower prices.

Best Software: Synology DS423+

Note: The Synology DS423+ is currently unavailable from most retailers. If you cannot find it at or below $500, choose one of the available alternatives in this guide rather than overpaying.

The Synology DS423+ is Synology’s answer to budget-conscious buyers who want DSM without paying ~$625 for the DS925+. At ~$500, it’s right at the budget line and the cheapest way into the best NAS software ecosystem on the market.

Specs: Intel Celeron J4125 (4C/4T, 2.7 GHz) · 2 GB DDR4 (expandable to 6 GB) · 4x 3.5”/2.5” SATA + 2x M.2 NVMe · 2x 1GbE · 3x USB 3.2

Idle Power: ~15W Price: ~$500

DSM 7 is the reason to buy Synology. Active Backup for Business (free) handles PC, server, and VM backups with no license fees, this alone replaces a Veeam or Acronis subscription. Synology Drive turns your NAS into a private Dropbox. Surveillance Station covers up to two cameras for free. Hyper Backup provides versioned, encrypted offsite backup to any S3-compatible target. No other NAS OS matches this breadth of first-party tools.

The J4125 includes Intel Quick Sync for one 4K H.264 stream or two simultaneous 1080p streams. Synology Photos with its AI face recognition is a polished self-hosted photo management solution.

The downsides are real. Two gigabytes of RAM is inadequate for Docker workloads, so budget $20-30 for an immediate upgrade to at least 4 GB, ideally 6 GB (the max). The 1GbE networking is a generation behind every competitor here; ASUSTOR, TerraMaster, and UGREEN all ship with 2.5GbE. And there is no supported high-speed network upgrade path.

Buy this if: Software quality matters more than raw hardware specs. Synology’s backup tools, mobile apps, and update cadence are unmatched. Accept the 1GbE limitation and plan for a RAM upgrade on day one.

Our Pick: ASUSTOR AS5402T

The ASUSTOR AS5402T packs Intel N5105, dual 2.5GbE, and four M.2 NVMe slots into a ~$407 package. The catch: it’s a 2-bay unit, not a 4-bay. If you can work with two SATA bays supplemented by NVMe storage, this is the most hardware per dollar in the sub-$500 range.

Specs: Intel Celeron N5105 (4C/4T, 2.9 GHz) · 4 GB DDR4 (expandable to 16 GB) · 2x 3.5”/2.5” SATA + 4x M.2 NVMe (PCIe Gen 3) · 2x 2.5GbE · HDMI 2.0b · 3x USB 3.2 Gen 2

Idle Power: ~15W Noise: 19.7 dB(A) Price: ~$407

The N5105 combines four Jasper Lake cores, Intel Quick Sync, and a 2.9 GHz burst clock. It is enough for file serving, several containers, and light hardware-accelerated media transcoding.

Four M.2 NVMe slots is the standout feature. Install four NVMe SSDs for a high-speed all-flash pool alongside two spinning SATA drives for bulk storage. This tiered setup, fast SSD pool for Docker volumes and databases, slow HDD pool for media and backups, usually requires a NAS costing twice as much. The best 4-bay NAS models typically offer only two M.2 slots.

At 19.7 dB(A), the AS5402T is the quietest NAS in this roundup. If your NAS lives on a desk or in a bedroom, this matters more than any spec sheet number. HDMI 2.0b outputs 4K with hardware decoding including HEVC and VP9 10-bit.

The compromise is ADM software. ASUSTOR’s ecosystem is functional but less polished than QTS or DSM. Fewer first-party apps, a smaller community for troubleshooting, and no equivalent to Synology’s Active Backup suite. Docker support works fine through Portainer, but you’ll lean on the command line more than with QNAP or Synology.

Buy this if: You want Intel Quick Sync and 2.5GbE at the lowest possible price, and two SATA bays (plus NVMe) provide enough storage. Ideal for a secondary NAS, a dedicated Plex box, or an SSD-first Docker host.

Budget 4-Bay: TerraMaster F4-223

Note: The TerraMaster F4-223 is currently unavailable from most retailers. If you can find it in stock, it remains an excellent budget 4-bay option.

The TerraMaster F4-223 is the cheapest 4-bay NAS with 2.5GbE networking, coming in around ~$300. If your primary need is bulk file storage across four drives with modern networking, this gets you there for less than anything else.

Specs: Intel Celeron N4505 (2C/2T, 2.9 GHz) · 4 GB DDR4 (expandable to 32 GB) · 4x 3.5”/2.5” SATA + 1x M.2 NVMe · 2x 2.5GbE

Idle Power: ~16W Transfer Speed: Up to 283 MB/s (RAID 0) Price: ~$300

Four bays at ~$300 means RAID 5 with single-disk redundancy for the price others charge for two bays. Dual 2.5GbE with link aggregation pushes up to 5 Gbps on paper, and real-world sequential reads hit 283 MB/s in RAID 0. The M.2 NVMe slot supports SSD caching to boost random I/O for container workloads.

The RAM situation is the F4-223’s hidden strength. It’s expandable to 32 GB, the highest ceiling of any NAS in this roundup. Start with the included 4 GB, then drop in a 16 GB or 32 GB SO-DIMM when you need it. At 32 GB, you could run TrueNAS or Proxmox on this hardware (TerraMaster doesn’t void warranties for alternative OS installs).

The N4505 is where you feel the budget. It’s a dual-core, dual-thread CPU, half the cores of the N5095/N5105 in the QNAP and ASUSTOR. Plex transcoding tops out at a single 1080p stream, and it lacks Intel Quick Sync entirely. Running more than 3-4 Docker containers simultaneously will tax this CPU. For pure NAS file serving, the dual-core is fine. For a home lab workhorse, it’s limiting.

TOS (TerraMaster Operating System) supports Docker and basic applications, but the software ecosystem is the weakest here. Fewer apps, less community support, and updates arrive slower than QNAP or Synology. You’ll likely end up installing Portainer and managing everything through Docker Compose.

Buy this if: You want four bays and 2.5GbE at the absolute lowest price. Best for file storage, Time Machine backups, and light Docker use. Skip it if Plex transcoding or heavy containerization is the plan.

Easiest Setup: UGREEN NASync DH4300 Plus

The UGREEN NASync DH4300 Plus is the NAS for people who don’t want to think about NAS administration. UGOS walks you through setup in minutes, the AI photo management is genuinely impressive, and 8 GB of RAM means Docker containers run without an immediate hardware upgrade.

Specs: Rockchip RK3588 (8-core ARM, 2.4 GHz) · 8 GB LPDDR4X · 4x 3.5” SATA · 1x 2.5GbE · HDMI 2.1 (8K) · 32 GB eMMC for OS

Idle Power: ~5W (diskless), ~22W (with 4 drives) Transfer Speed: 206 MB/s read, 136 MB/s write (RAID 1, 2.5GbE) Price: ~$380

The RK3588 is an 8-core ARM chip with four Cortex-A76 performance cores and four Cortex-A55 efficiency cores. It handles Docker containers, 4K direct play, and file serving competently. The integrated 6 TOPS NPU powers on-device AI photo recognition, face detection, object tagging, and scene classification that runs locally without sending your photos to the cloud. If you’re migrating from Google Photos, UGREEN’s photo app is the most capable self-hosted alternative at this price.

HDMI 2.1 with 8K output makes this a surprisingly capable media player for direct playback. Connect it to your TV and play files directly, no transcoding needed when the client handles decoding.

The hardware limitations are significant for home lab use. No M.2 NVMe slots means no SSD caching, all storage runs through SATA. The single 2.5GbE port can’t be aggregated or upgraded; there’s no second port and no PCIe slot. RAM is soldered at 8 GB with zero upgrade path. And the ARM architecture means no Intel Quick Sync. Plex transcoding falls back to software encoding, which the RK3588 handles poorly for anything above 720p.

UGOS is young software. It’s polished for basic use cases (file sharing, photo backup, Docker via a GUI), but it lacks the depth of DSM or QTS. Advanced RAID configurations, detailed logging, and granular permission management are either simplified or absent. Docker support works, but the container ecosystem through UGOS is more limited than competing platforms.

Buy this if: You want the simplest possible NAS setup with great photo management. Perfect for family file sharing, phone photo backup, and basic Docker containers. Not the right pick for Plex transcoding, heavy home lab workloads, or users who want hardware upgrade paths.

How to Choose: Buying Criteria

CPU Architecture: Intel vs. ARM

Intel CPUs (N5095, N5105, J4125, N4505) bring two critical advantages for home lab use: Intel Quick Sync for hardware video transcoding, and broad x86 software compatibility. Every Docker image, VM, and NAS OS is built for x86 first. ARM chips (like UGREEN’s RK3588) run Docker containers fine for many applications, but some images lack ARM builds, and Plex transcoding is severely limited without Quick Sync. If you plan to run Plex with remote users or deploy a wide variety of containers, buy Intel.

Networking: 1GbE vs. 2.5GbE

In 2026, 2.5GbE should be the target. A single 1GbE port caps real-world throughput at ~112 MB/s, fine for a single user streaming video, but a bottleneck for multi-user file access, VM storage, or large backup jobs. The Synology DS423+ is the only unit here still shipping 1GbE, and it is a genuine drawback. Every competitor offers at least one 2.5GbE port (~280 MB/s real-world), and ASUSTOR and TerraMaster provide two for link aggregation.

RAM: How Much Do You Actually Need?

For basic file serving: 2 GB works. For Docker containers: 4 GB minimum, 8 GB recommended. For running more than 5-6 containers with databases: 8-16 GB. The UGREEN ships with 8 GB ready to go. The Synology ships with only 2 GB, not enough for Docker without an upgrade. The TerraMaster offers the best upgrade ceiling at 32 GB, which matters if you plan to install TrueNAS or Proxmox later.

Drive Bays: 2-Bay vs. 4-Bay

Four bays unlock RAID 5: single-disk redundancy with 75% usable capacity. With four 8 TB drives, you get 24 TB usable. Two bays limit you to RAID 1 (mirroring) with 50% usable capacity, two 8 TB drives give you only 8 TB. The ASUSTOR AS5402T compensates for its two SATA bays with four NVMe slots, but if you need bulk HDD storage, a 4-bay unit is the better foundation. For a deeper comparison, see our best 4-bay NAS guide.

Expansion and Future-Proofing

None of these strict sub-$500 picks has a supported PCIe expansion path, so choose networking and drive bays for the workload you expect over the appliance’s lifetime. The ASUSTOR’s four M.2 slots offer the most internal flash flexibility; the TerraMaster’s four HDD bays and expandable memory favor bulk storage and light containers.

Bottom Line

The ASUSTOR AS5402T at ~$407 is the best all-around choice, delivering Quick Sync, expandable memory, dual 2.5GbE, and four M.2 slots. The Synology DS423+ at $500 offers the best software experience at the budget line when it is actually available at that price. The TerraMaster F4-223 at ~$300 is the cheapest 4-bay pick with 2.5GbE for pure storage needs. If simplicity matters most, the UGREEN DH4300 Plus at ~$380 is the easiest NAS to set up and live with.