Costs and limitations of device parity protection with hot spare disk units

 

There are costs and limitations to consider when using device parity protection with hot spare disk units.

• Hot spare disk units only protect parity sets with the same capacity disk units (for SCSI IOAs), or only protect parity sets with the same or smaller capacity disk units (for SAS IOAs).

• In order to create a new RAID 6 parity set with hot spare disk units, a minimum of 5 disk units is needed. If there are not at least 5 disk units, then the system will recommend the creation of a RAID 5 parity set with hot spare instead.

 

Parent topic:

Device parity protection with hot spare disk units concepts