QNAP vs Synology

Start with what you plan to do with it. If the box is a media server, especially Plex or Jellyfin with remote streaming, QNAP's Intel models transcode in hardware and Synology's current Plus lineup does not. If the box is a backup target and file server you want to forget about, Synology's DSM and its free Active Backup for Business are hard to beat. Most people land cleanly on one side once they name the primary job.

The second factor used to be drives. Synology's 2025 models refused third-party disks for new storage pools, and that pushed a lot of buyers to QNAP. DSM 7.3 undid it in October 2025, so any NAS-rated SATA drive works on either brand now. The leftover difference is M.2: Synology still wants drives from its compatibility list for an NVMe storage pool or SSD cache, and QNAP has no such rule.

Price between comparable models is close. A four-bay Synology DS925+ runs around $640 diskless and a four-bay QNAP TS-464 runs around $590, both before disks. The difference is not the sticker, it is what you get for it. QNAP puts a faster CPU, dual 2.5GbE, two NVMe slots, and an HDMI port in that box, while Synology spends its budget on software.

For years Synology showed a warning if you used non-Synology drives and otherwise left you alone. That changed with the 2025 Plus series. On the DS925+, DS1525+, DS1825+ and their siblings, Synology limited new storage pools to its own branded drives or a short validated list, so a third-party disk could be refused outright.

The reason it stung: Synology drives are rebadged Seagate and Toshiba units sold at a markup. Buyers who were used to dropping in WD Red or IronWolf drives suddenly faced paying more for the same disks. The homelab community reacted exactly how you would expect.

Synology backed down. DSM 7.3, released on October 8, 2025, lets the 2025 Plus, Value, and J series install third-party drives and build storage pools on them again. One piece stuck: creating an M.2 NVMe storage pool or SSD cache still requires drives on Synology's compatibility list. So for the spinning disks that hold your data, buy whatever NAS-rated drive is on sale, and make sure a new box is on DSM 7.3 or later before you build the pool. If you want cheap third-party NVMe as a pool or cache, that part still favors QNAP.

Pick almost any matched pair and QNAP wins the spec sheet. Where a Synology Plus model gives you a dual or quad-core AMD embedded chip with no integrated graphics, the comparable QNAP usually ships an Intel Celeron or Pentium with Quick Sync, dual 2.5GbE instead of gigabit, two M.2 NVMe slots for cache or a fast pool, a PCIe slot for a 10GbE card, and an HDMI output if you want to use it as a small media box or VM host.

That Intel iGPU is the headline for media servers. Hardware transcoding in Plex or Jellyfin leans on Intel Quick Sync, so a QNAP can reflow a 4K stream to a phone without pegging the CPU. Synology dropped usable transcoding from its Plus line when it moved to AMD chips, so those models direct-play well but struggle the moment a client needs a transcode. If your library is full of formats your TVs and phones cannot natively play, that gap is the whole decision. The Jellyfin vs Plex breakdown covers which player to pair with it.

QNAP also offers QuTS hero on its higher-end and h-series models, which swaps the default ext4 filesystem for ZFS. That gets you block-level checksums, inline compression, and deduplication, at the cost of wanting a lot more RAM. If you want ZFS in an appliance without building a TrueNAS box, QNAP is the only one of these two that offers it across a real lineup.

DSM is the best NAS operating system to actually live with. The interface is clean, the mobile apps are good, and the first-party suite (Synology Photos, Drive, Note Station, Calendar, Surveillance Station) covers most of what people self-host without hunting for third-party packages. QNAP's QTS does all the same things and more, but the UI is busier and the apps feel less coordinated. For a non-technical household member, DSM is the one that does not generate support calls.

The standout is Active Backup for Business. It is free with DSM, and it does image-level backups of Windows PCs and servers, VMware and Hyper-V VMs, file servers, and Microsoft 365 or Google Workspace, all with deduplication across the lot. As a turnkey backup target it has no real equal on QNAP, whose Hybrid Backup Sync (HBS 3) is capable but clunkier to set up and not as good at endpoint imaging. If your reason for buying a NAS is backups, that one app is a legitimate reason to pay the Synology premium.

Storage flexibility tilts to Synology too, through SHR. Synology Hybrid RAID lets you mix drive sizes and still use most of the capacity, and grow the pool a disk at a time. QNAP sticks to standard RAID, where mixing a 4 TB and an 8 TB drive wastes the difference. If you expect to expand piecemeal with whatever drives are cheap that month, SHR is genuinely useful. Run the numbers in the RAID calculator before you commit to a layout.

On the filesystem, Synology Plus models use Btrfs, which gives you snapshots and, when paired with SHR, scrubbing that can detect and repair silent corruption from a good copy. QNAP's default QTS uses ext4, which mirrors bits but cannot tell a good block from a rotted one; you only get self-healing if you step up to a QuTS hero model running ZFS. For bit-rot protection out of the box on a mainstream model, Synology's Btrfs setup is ahead of a default QNAP. The Btrfs vs ZFS piece digs into that tradeoff.

Security history is the uncomfortable part for QNAP. Internet-exposed QNAP devices were hit hard by ransomware campaigns like DeadBolt, Qlocker, and eCh0raix over the last few years, often through services users had no business exposing. Synology has had incidents too, but nothing on that scale recently. The fix is the same on both: never put the admin panel on the public internet, reach it over a VPN or the vendor's relay, disable the default admin account, and keep the firmware current.

Neither array is a backup, no matter how many disks it has. RAID buys you uptime through a single drive failure, not protection from ransomware, fat-fingered deletes, or a power event that corrupts a pool. Whichever brand you pick, keep a second copy off the box. A NAS is the on-site half of a backup plan, not the whole thing.