For added availability I'm considering building a RAID0 pool on top of several 3 way-RAID1 vdevs built with 4TB hard drives.
However I'm wondering :
- Will the read performances be better compared to a 2-way mirror ?
- What if a second drive fails in the same vdev during the reconstruction ? Does ZFS handle this transparently (ie uses the remaining healthy drive for reconstruction without downtime) ?
- How does ZFS reconstruct a failed raid1 vdev if it has 2 available mirror drives ? Will it use both drives, reducing by half the access on the mirrored drives, or will it use only one drive ?
Thanks ;)
However I'm wondering :
- Will the read performances be better compared to a 2-way mirror ?
- What if a second drive fails in the same vdev during the reconstruction ? Does ZFS handle this transparently (ie uses the remaining healthy drive for reconstruction without downtime) ?
- How does ZFS reconstruct a failed raid1 vdev if it has 2 available mirror drives ? Will it use both drives, reducing by half the access on the mirrored drives, or will it use only one drive ?
Thanks ;)