Can You Use SSDs in a Synology NAS? (And When It's Worth It)
Compatibility data on this site last refreshed 2026-10-29 · reading time ~3 min
Yes, SSDs work in Synology NAS bays, and many SATA SSD part numbers appear on Synology's official compatibility list. The real question is which job you want them to do, because DSM treats SSDs differently depending on role.
SSD as primary storage
Any listed SATA SSD can hold a storage volume. This makes sense for small, I/O-hungry datasets (databases, VMs on higher-end units, photo libraries with fast browsing). Cost per TB is still 3-5x HDD, so most home users cap SSD volumes at 1-4TB and keep big media on spinning disks.
SSD as cache
On models with enough RAM, DSM supports SSD read cache and (on many x86 models) read-write cache. Note that newer Synology units increasingly expect Synology-branded SSDs for cache duty and may warn on third-party cache drives — primary-storage volumes are unaffected.
What SSDs don't fix
A gigabit network tops out around 110MB/s. A single HDD already saturates it for sequential transfers. SSDs accelerate random I/O and many simultaneous users, not single-stream file copies — don't expect faster movie copies.
Endurance note
Cache duty writes constantly; pick drives with meaningful TBW ratings (datacenter SATA or high-endurance consumer lines) rather than bargain DRAM-less models.
Quick answers
Do NVMe SSDs work in Synology bays?
Only in dedicated M.2 slots on models that have them, and mostly for cache. Drive bays themselves are SATA.
Is an all-SSD Synology build sensible?
For a fast, silent, low-power unit under ~8TB total, yes. Beyond that, HDD cost per TB wins for bulk storage.
Check your exact model
Compatibility is per machine and per part number. Pick your model for its full official drive list: