Quick question regarding pool construction for 14x HDD's. I'm putting together a cheap back-up server using 14x old 2TB HDD's. I am deciding whether to set it up as follows:
Either:
2x 7 drive Raid-Z2 vdev's and then stripe the vdev's together for a total of 18.2 TB usable
or
set up one large 14 drive Raid-Z3 for a total of 20.0 TB usable.
This is only on a gigabit network and this machine will actually be turned off 95% of the time. Speed isn't an issue since once the initial backup completes, everything else will be either small weekly or monthly incremental backups of some networked machines and file shares.
Either:
2x 7 drive Raid-Z2 vdev's and then stripe the vdev's together for a total of 18.2 TB usable
or
set up one large 14 drive Raid-Z3 for a total of 20.0 TB usable.
This is only on a gigabit network and this machine will actually be turned off 95% of the time. Speed isn't an issue since once the initial backup completes, everything else will be either small weekly or monthly incremental backups of some networked machines and file shares.