Best SSDs for Synology DS923+ (2026 UK Buying Guide)

Best SATA SSDs for the DS923+

Three sensible picks depending on budget and how much of the 4-bay chassis you want to fill with flash.

Which should you pick

Why SATA SSDs make sense here

The DS923+ takes any compatible drive in its four main bays, SATA or otherwise, so you're not locked into Synology's own SSD range. With 2x 1GbE as standard, a single SATA SSD already saturates the network link comfortably, so there's little practical benefit chasing NVMe-class speeds in the main bays. The two M.2 NVMe slots are better reserved for read/write cache or a small, fast metadata volume if you're running Synology Photos or Active Backup for Business across a large HDD pool.

Because this is a dual-core Ryzen box with 4GB of ECC RAM (expandable to 32GB), the bottleneck in real-world use is almost never drive throughput. It's CPU and RAM for background tasks, indexing, and multiple simultaneous users. SATA SSDs here buy you low latency for small-file access, silent running, and lower power draw over spinning disks, which matters if the NAS sits in a room you actually spend time in.

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