After watching videos from @tomlawrence and @technotim about #TrueNAS I'm still somewhat undecided how to setup my 12-disk server with a mix of old/new disks for a general purpose storage (backup, iSCSI targets for VMs, etc...), but it seems like to have this kind of setup:
sdm: system disk (SATA DOM)
8 or 12 disks as 2-disk mirrors in a pool with NVMe for SLOG and maybe 2 or 4 SSDs for L2ARC, depending on whether I can fit them inside the 2 RU server or if I need to use drive bays for that.
@ij@tomlawrence@technotim lesser known fact: on #zfs, disabling sync writes with sync=disabled is more efficient than using a zil slog, if sync writes are not required, that is, loss of a couple of seconds worth of writes is acceptable.
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