I have 2 x 4TB disks and 3 x 6TB disk which I want use with ZFS. My objective is to maximise the usable storage space whilst allowing for a single disk failure.
Ideally a raidz setup would be used however from my research, different size drives cause the larger drives to be under utilized. That is, only 4TB out of 6TB would be used on the larger drives.
Is it possible to stripe (raid 0) the following:
- two 4TB in a mirror (raid 1) configuration
- three 6TB disks in a raidz (raid 5) configuration
Alternatively, could the two 4TB be striped and then the stripe used in a raidz configuration with the 6TB drives? That is:
- Stripe the two 4TB drives
- Raidz the 3 x 6TB and striped 4TB disk