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Convert from RAID-TEC to RAID-DP in ONTAP

Contributors netapp-mwallis netapp-thomi netapp-lenida netapp-dbagwell netapp-aherbin
PDFs

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.

Note 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.
Before you begin

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.

About this task

To understand the implications of converting between RAID types, refer to the parameters for the storage aggregate modify command.

Steps

  1. Verify that the local tier is online and has a minimum of six disks:

    storage aggregate show-status -aggregate aggregate_name

  2. Convert the local tier from RAID-TEC to RAID-DP:

    storage aggregate modify -aggregate aggregate_name -raidtype raid_dp

  3. Verify that the local tier RAID policy is RAID-DP:

    storage aggregate show aggregate_name