You can change an existing aggregate's RAID level from RAID4 to RAID-DP if you want the increased protection that RAID-DP provides.
- Determine the number of RAID groups and the size of their parity disks in the aggregate in question by entering the following command: aggr status aggr_name -r
- List the available hot spares on your system by entering the following command: aggr status -s
- Make sure that at least one, and preferably two hot spare disks exist for each RAID group listed. If necessary, add additional hot spare disks.
- Enter the following command: aggr options aggr_name raidtype raid_dp
When you change the RAID level of an aggregate from RAID4 to RAID-DP, Data ONTAP makes the following changes:
After you finish
You can verify the new RAID level by using the aggr options command.