[PVE-User] ZFS - question

[Gianni Milo]

>
> I heave 2 qestion about zfs.
> In my four ssd disk RW speed is 550MB/s
> But zfs matrix work only 700MB/s (for comparison mdadm 1400MB/s).
> This same on nvme (m.2) disk.
> Self m.2 2500MB/s.
> In raid-z1 only shows 1500MB/s peer disk.


ZFS is much more complex than mdraid, so it's "normal" to expect some
overhead there. You must dig in its (long) documentation if you want to
optimise it for each use case. ZFS mailing list might be a better place for
any questions you may have (assuming you have already done your homework :-)

Gianni