Convert from ONTAP RAID-TEC to RAID-DP
If you reduce the size of your local tier 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.
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Prior to ONTAP 9.7, System Manager uses the term aggregate to describe a local tier. Regardless of your ONTAP version, the ONTAP CLI uses the term aggregate. To learn more about local tiers, see Disks and local tiers. |
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.
To understand the implications of converting between RAID types, refer to the parameters for the storage aggregate modify
command.
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Verify that the local tier is online and has a minimum of six disks:
storage aggregate show-status -aggregate aggregate_name
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Convert the local tier from RAID-TEC to RAID-DP:
storage aggregate modify -aggregate aggregate_name -raidtype raid_dp
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Verify that the local tier RAID policy is RAID-DP:
storage aggregate show aggregate_name