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You can add devices as vdevs to a pool, though. You can't add disks to a vdev. (IIRC) It's no different to LVM in that aspect.
by postmodest 3y ago
You can add devices as vdevs to a pool, though. You can't add disks to a vdev. (IIRC) It's no different to LVM in that aspect.
- Lex-2008 3y agoIIRC, the pool is effectively RAID0 over vdevs: if any single vdev dies - whole pool dies. Do i remember this correctly? So if over the years I got, say, five disks of varying quality - I shouldn't add them to a pool as five individual vdevs :)
- calcifer 3y ago> if any single vdev dies - whole pool dies. Do i remember this correctly? Yes, that's why you don't have single-disk vdevs.
- kalleboo 3y agoCorrect. I lied when I said you can't add single disks, I meant you shouldn't add single disks. It's not like e.g. Synology where you can add a single disk and it will expand your underlying RAID5/6 arrays