I'm concerned about using a set of striped mirrors with ZFS for my data--I will likely have 33 drives use.
I could set this up as a stripe of 16 mirrors with a hot-spare. Sounds good, but if I lose a single drive, that mirror is compromise and has no redundancy during the rebuild. This bothers me as I can only lose ANY 1 drive but can lose up to 16 if the stars and planets align.
If I was to have 8 RAID-Z2s of 4 drives with a hot spare, this would allow me to lose ANY 2 drives without data loss with ANY single drive loss still providing redundancy during a rebuild (again, I'd be able to lose up to 16 if everything worked out perfectly).
Is this a good idea or am I just paranoid?
I could set this up as a stripe of 16 mirrors with a hot-spare. Sounds good, but if I lose a single drive, that mirror is compromise and has no redundancy during the rebuild. This bothers me as I can only lose ANY 1 drive but can lose up to 16 if the stars and planets align.
If I was to have 8 RAID-Z2s of 4 drives with a hot spare, this would allow me to lose ANY 2 drives without data loss with ANY single drive loss still providing redundancy during a rebuild (again, I'd be able to lose up to 16 if everything worked out perfectly).
Is this a good idea or am I just paranoid?