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Convert from RAID-DP to RAID-TEC in ONTAP

Contributors netapp-mwallis netapp-thomi netapp-aaron-holt netapp-aherbin netapp-lenida netapp-dbagwell
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If you want the added protection of triple-parity, you can convert from RAID-DP to RAID-TEC. RAID-TEC is recommended if the size of the disks used in your local tier is greater than 4 TiB.

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 local tier that is to be converted must have a minimum of seven disks.

About this task

  • Hard disk drive (HDD) local tiers can be converted from RAID-DP to RAID-TEC. This includes HDD tiers in Flash Pool local tiers.

  • Learn more about storage aggregate modify in the ONTAP command reference

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-DP to RAID-TEC:

    storage aggregate modify -aggregate aggregate_name -raidtype raid_tec

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

    storage aggregate show aggregate_name