Adding SSD Cache to Synology DiskStation DS918+ with Samsung NVMe M2 SSD -
Synology DS918+ NAS 開箱評測(完全拆解篇):內建雙M.2 NVMe SSD 快取插槽
Synology has quietly added support for M.2 SSD volumes. This is a huge deal, as Synology previously allowed these slotted SSD drives for cache purposes only, limiting their utility. : r/synology