4 ms·
Resilvering isn't random IO though, it's almost perfect for SMR, one continuous write from sector 0 to the end. I just put a ST8000DM004 8TB drive into my 12 d
by mavhc 7y ago
Resilvering isn't random IO though, it's almost perfect for SMR, one continuous write from sector 0 to the end.
I just put a ST8000DM004 8TB drive into my 12 disk raidz2, on zfs 0.8, it took 8 days (so terribly slow 9MB/sec), but no errors resilvering
- dcm360 7y agoResilvering on ZFS in not linear, it is quite some random IO. A ST8000DM004 is capable of linear reads above 200MB/s, and a normal drive should be able to handle the same speeds with linear writes. I would not recommend those drives for use with ZFS from my own experience: one of my drives disappeared after 1.5TB of writes while moving a dataset, and only went online again (with a SMART failure) after a power cycle.
- mavhc 7y agoIsn't that what sequential resilvering in zfs 0.8 means?