Expanding mirror with limited slot space

[seb101]

Hi again,

Is it possible to 'expand' an exisitng mirror pair by one-by-one repalcing with bigger driver? Assuming there is no spare slot space in your NAS (and I appreciate this is risky as you lose all protection for a short time) can you:

1. Detach one smaller drive.
2. Replace with larger drive and attach to the mirror.
3. Wait for resilver to completed.
4. Detach the other smaller drive.
5. Replace with larger drive and attach to the mirror.
6. Wait for resilver to complete.
7. Expand the pool????

Its the last step I'm unsure of, will ZFS automagically make use of the extra disk space? Or does something have to be done manually? Or can this not be done at all?

Thanks!

 

[Chris Moore]

Expand the pool????

Once the second resilver is finished, the pool should automatically expand.