Best 2-Bay NAS of 2026

Before you order this one, open the drive compatibility list. Synology's recent software has been strict about which disks can build a storage pool, and NAS-rated drives from other brands have been refused outright, which turns an affordable enclosure into an expensive project once you're buying Synology's own disks. Check the exact drive you plan to use against the list for this model first; it's a five-minute job that decides the total cost.

Clear that hurdle and this is the best media machine in the group. The Intel chip does hardware transcoding, so Plex and Jellyfin can convert a 4K stream for a phone or an older TV without choking, and the listed 282 MB/s is the highest transfer figure here — you won't see it on a gigabit network, but it tells you the hardware isn't the bottleneck. DSM is still the software everything else gets measured against, and the three-year warranty is the longest of any pick.

The ceiling is 40TB and there's no second life planned beyond it, which is fine for three laptops and a film library and less fine for a decade of camera footage. Buy it for the software and the transcoding rather than the numbers on the box — that's what you're paying for, and it's still worth it.

If you want a box you can add to rather than replace, this is the pick. There's a free PCIe Gen3 x2 slot that takes a 10GbE network card or an M.2 expansion card, two M.2 NVMe slots for cache, two 2.5GbE ports, and 8GB of DDR4 doing the work. No other prebuilt here gives you an open expansion slot like that.

The Intel N5105 and 8GB of RAM are why it runs a Plex library and a couple of containers at once without complaint, and the two network ports can be aggregated if your switch supports it. Building a mirror takes time on any two-bay box — start it before you need the space, not the night before a deadline.

QNAP's QTS is the cost. It's busier than DSM, the app store is uneven, and the interface takes an afternoon to learn; the first setup also assumes more networking knowledge than Synology's wizard does. What that afternoon buys you is genuine upgrade paths and more memory out of the box than most of this group. Pair it with a 2.5GbE switch or you're paying for ports you can't fill.

Four M.2 NVMe slots on a two-bay NAS is unusual, and it is the entire reason to look at this one. Fill them with NVMe drives for an all-flash pool you can edit from, or use them as cache so the hard drives feel quicker for everyone on the network. For an editor cutting from the NAS instead of a local scratch disk, that's the difference between workable and miserable.

The rest of the hardware supports the idea: an Intel N5105, 4GB of DDR4 that takes up to 16GB, dual 2.5GbE ports, HDMI 2.0b for direct output, and USB 3.2 Gen2. Drives and M.2 sticks go in without dismantling anything, and a Plex install ran through without the fiddling we expected.

The chassis is where the budget went elsewhere. It's light, and with both bays working it picks up a vibration hum you'll notice in a quiet room, so plan on a solid shelf rather than a bookcase next to the sofa.

Our verdict is that this is the most capable two-bay NAS here for anyone storing and editing large media, and the four NVMe slots give it a job no other pick can do. For a household that wants shared folders and phone backups, it's more machine than the job asks for — the DS223j or the DH2300 will handle that for a lot less.

This is the least expensive way into a two-bay NAS here, and for plenty of households it's enough. It's a small white box — 8.9 inches tall, under a kilo — running the same DSM software as Synology's expensive units, which is the real reason to buy it rather than the hardware. Two bays, a mirror if you want one, a two-year warranty, and a wizard that assumes you've never done this before.

The trade is speed. The processor here is the modest one in this group, so the interface takes a beat longer, transfers settle at whatever your network allows, and transcoding is not something to count on — it will stream a file the player can already decode, which is a different job from converting one.

Setup still isn't plug and play, whatever the listing suggests. Expect an evening with the drive compatibility list and the shared-folder permissions before it behaves. After that it disappears onto a shelf and stays quiet — one of the least intrusive boxes here. Buy it for backups and shared documents, not for a media server.

The pitch here is the phone in your pocket, and it's a good pitch. The AI album tags faces, places, text, and objects, so you can search for a name or a beach instead of scrolling back through years of camera roll, and scheduled backups from phones and computers run once you've set them up. Two bays hold up to 64TB, there's 4GB of RAM and an HDMI port, and drives go in and the thing is running in a handful of clicks.

Where it runs out is speed and media. The single gigabit port means transfers top out around 125 MB/s, and this isn't the box to buy if Plex or Jellyfin is the plan — the HDMI output mirrors a screen rather than driving a proper player. As a first NAS for a family that wants photos and documents in one place, we think it's the easiest recommendation here. As a media server, it isn't one.

The number that caught our eye is 19 dB(A), a claimed noise figure that would make this the quietest box here by a distance. Read it as a claim about the fan, not the whole experience: the drives are what you'll hear in practice, and two 3.5-inch disks will beat a quiet fan every time. What the figure does tell you is that TerraMaster built this for a shelf near people rather than a cupboard.

The hardware is more than the position suggests: an Intel quad-core, 4GB of RAM, 2.5GbE, tool-free drive trays, and a 60TB ceiling. The software is the compromise — TNAS is functional, and the mobile app can handle the initial setup without a PC, but it's the least polished operating system in this group, and this isn't the fast one when it's mirroring two large drives.

We see it as the value alternative to the QNAP for straight file serving: x86, 2.5GbE, and a quiet fan for less money, without the ecosystem. Go in expecting to configure things by hand and to leave the media-server job to a box with a stronger chip, and it earns its place.

What arrives is a kit: an x86 board, 16GB of RAM, a metal cage for two drives, dual SATA cables, and a power supply. What doesn't arrive is an operating system, drives, or anything resembling a setup wizard. If that last sentence made you more interested rather than less, this one is aimed at you.

The appeal is the platform. Sixteen gigabytes is more memory than any prebuilt here ships with, there's a PCIe x4 slot for a network card or more storage, and because it's x86 you can put TrueNAS, Unraid, Proxmox, or plain Linux on it and run Docker containers and Home Assistant alongside your files. For a homelab that starts as a NAS and turns into something else, that freedom is the whole point.

The cost is your evening. You assemble it, install the OS, configure the shares, and troubleshoot the parts yourself, with no support line to call when an array won't rebuild and no vendor software doing the boring parts. Check what your chosen operating system supports before you buy drives.

We think it suits exactly one reader: the person who enjoys this and wants two bays of storage inside a machine they control. Everyone else should buy an appliance — a DS223j or a DH2300 will be serving files before you've finished writing a USB stick, and neither will ask you to know what a pool is.