[SOLVED] Proxmox ZFS RAID10 with NVMe SSD

[mare19]

What is the best compression Option and ashift size for the Koxia KCD6XLUL3T84 NVMe SSD?
Suggestions and, if need be, best-performing settings would be very helpful. Thank you very much

 

[Dunuin]

No SSD manufacturer will tell you what blocksize a SSD will internally actually use. You will need to do some benchmarks with same settings but different ashifts (for example 9,12,13 and 14) and see what performs the best. Ashift=12 should usually be fine.
LZ4 would be the fastest compression with very low CPU impact but doesn't compress that much.
ZSTD would give you a better compression ratio but will be slower with higher CPU usage.

 

[mare19]

No SSD manufacturer will tell you what blocksize a SSD will internally actually use. You will need to do some benchmarks with same settings but different ashifts (for example 9,12,13 and 14) and see what performs the best. Ashift=12 should usually be fine.
LZ4 would be the fastest compression with very low CPU impact but doesn't compress that much.
ZSTD would give you a better compression ratio but will be slower with higher CPU usage.

Thank you!