Synology DiskStation DS925neo+ (4-Bay NAS)

The neo+ line, introduced in August 2026 alongside the DS1825neo+, DS1525neo+ and DS725neo+, is Synology's answer to a long-standing complaint: that its Plus-series boxes ask a lot of money before you've bought a single disk. The DS925neo+ is the 4-bay member of that family, and the strategy is refreshingly simple — keep the platform, cut the memory. It ships with 4GB of non-ECC DDR4 rather than the ECC module buyers of the standard DS925+ get, and everything else, right down to the AMD Ryzen V1500B and the two 2.5GbE ports, appears to carry over unchanged.

That makes it an easy unit to place. If you're a small office, a design studio or a serious home user who wants DSM — Synology Drive for file sync, Active Backup Suite for endpoint and server backups, Surveillance Station for a modest camera deployment — and you were priced out of the regular Plus model, this is aimed squarely at you. Four bays plus a DX525 expansion unit gives you room to grow into six figures of raw terabytes, and the two NVMe slots can act as cache or as a genuine fast storage pool, which is the kind of flexibility that still isn't universal at this tier.

Who it isn't for: anyone who has already decided that ECC memory is non-negotiable, and anyone whose workload is going to saturate a 2.5GbE link. Both are real constraints here rather than nitpicks, and we'll get to why.

Judged as an engineering exercise, the neo+ repositioning is smart. Nothing about the compute or storage subsystem has been compromised, so you're not buying a slower NAS — you're buying the same NAS with less RAM. Memory is the one component an end user can trivially replace, and Synology has left the door open to 32GB of ECC later. The catch is a meaningful one: because mixing non-ECC and ECC modules isn't supported, upgrading properly means discarding the module you paid for and buying a matched pair. That turns a nominally cheap entry point into a more expensive path for anyone who wants ECC eventually, and it's worth doing the arithmetic before assuming the neo+ is the thrifty choice.

Performance expectations should be set by the network, not the drives. Synology's own figures of up to 522 MB/s read and 565 MB/s write are numbers you'll only see over aggregated links or from NVMe; a single 2.5GbE client will hit its ceiling well before that. The larger neo+ models get PCIe slots for 10GbE or 25GbE cards, and their absence here is the clearest line Synology has drawn between the 4-bay unit and its bigger siblings. For file serving, backup targets and up to 40 cameras it's ample. For video editing off the array or for anything latency-sensitive at scale, look upmarket.

The honest gap in this assessment is price. No confirmed figure was available to us, and since the entire premise of the neo+ is cost, the final verdict genuinely hangs on a number we can't yet quote. If the discount against the DS925+ is substantial, this is one of the more sensible 4-bay NAS buys of the year; if it's marginal, most buyers should simply pay for the ECC version. We're rating it on the hardware and the software platform, both of which are proven, with a deliberate reservation for the unknown.