[Feature]: add SSD as cache

[rayqusa]

Is your proposal related to a problem?

could you add SSD as cache? so it going faster?

Describe the solution you'd like.

adding new docker compose to adding cache SSD/NVME

Describe alternatives you've considered.

adding new docker compose to adding cache SSD/NVME

Additional context

No response

[xrh0905]

Unforturanlly impossible due to feature not avaible, due to Synoogy limitation.
Possible alternative is setup virtual block dev with SSD cache(ZFS Prehaps?) and passthrough that as the volume for vDSM.
See also: #1116 (comment)