Convert RAID-TEC to RAID-DP
If you reduce the size of your aggregate and no longer need triple parity, you can convert your RAID policy from RAID-TEC to RAID-DP and reduce the number of disks you need for RAID parity.
The maximum RAID group size for RAID-TEC is larger than the maximum RAID group size for RAID-DP. If the largest RAID-TEC group size is not within the RAID-DP limits, you cannot convert to RAID-DP.
Verify that the aggregate is online and has a minimum of six disks:
storage aggregate show-status -aggregate aggregate_name
Convert the aggregate from RAID-TEC to RAID-DP:
storage aggregate modify -aggregate aggregate_name -raidtype raid_dp
Verify that the aggregate RAID policy is RAID-DP:
storage aggregate show aggregate_name