Yeah you’re right, that’s why I was imagining putting only the parity bits on the SATA drive, so ZFS can do it’s calculation after I’m done with my data operations on the NVMes. Guess I’ll have to dig deeper in TrueNAS and ZFS config :)

Didn’t think that way around but this can probably work pretty well :) What about the remaining space on the SSD then? May it be partitioned so I have 3x2TB with 2x2TB of NVMes and parity on the 2TB SATA SSD?