Darren Dunham wrote:
The problem I've come across with using mirror or raidz for this setup
is that (as far as I know) you can't add disks to mirror/raidz groups,
and if you just add the disk to the pool, you end up in the same
situation as above (with more space but no redundancy).
You can't add to an existing mirror, but you can add new mirrors (or
raidz) items to the pool. If so, there's no loss of redundancy.
Maybe I'm missing some context, but you can add to an existing mirror
- see zpool attach.
Neil.
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