Hey Guys,
Have been thinking of build a freenas server and have a few questions about different zpool setups.
Option 1:
4 2disk mirrored vdev
protect against 4 disk failures 1 from each vdev
Option 2:
2 4disk raidz2 vdev
protect against 4 disk failures 2 from each vdev
Option 3:
2 3disk raidz1 vdev
protect against 2 disk failures 1 from each vdev
Assuming 4TB drives all options should provide ~16TB usable space. My question is how do these differ during rebuilding in case a drive fails.
First off though is my understanding of vdev correct or did i mess that up?
Does mirroring have the least impact chance of failure when rebuilding
To upgrade i replace a disk in a vdev let it rebalance and repeat for all drives in a vdev. For raidz is the upgrade also done by recalculating parity and are there chances of failure during this time.
Thanks
Have been thinking of build a freenas server and have a few questions about different zpool setups.
Option 1:
4 2disk mirrored vdev
protect against 4 disk failures 1 from each vdev
Option 2:
2 4disk raidz2 vdev
protect against 4 disk failures 2 from each vdev
Option 3:
2 3disk raidz1 vdev
protect against 2 disk failures 1 from each vdev
Assuming 4TB drives all options should provide ~16TB usable space. My question is how do these differ during rebuilding in case a drive fails.
First off though is my understanding of vdev correct or did i mess that up?
Does mirroring have the least impact chance of failure when rebuilding
To upgrade i replace a disk in a vdev let it rebalance and repeat for all drives in a vdev. For raidz is the upgrade also done by recalculating parity and are there chances of failure during this time.
Thanks