Granted, you can add a stripe to an existing mirror by adding a second pair of mirrored drives to a zpool, thus growing the zpool.
But if I were to wait until the first mirror was almost full before doing this, would I benefit from the performance advantages of RAID-10 i.e. does ZFS redistribute and stripe the existing data or will this only apply to new writes?
But if I were to wait until the first mirror was almost full before doing this, would I benefit from the performance advantages of RAID-10 i.e. does ZFS redistribute and stripe the existing data or will this only apply to new writes?