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What are the RAID-TEC disk size requirements

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Applies to

  • FAS storage systems
  • ONTAP 9
  • Hard-disk drives (HDD)

Answer

  • The default RAID policy for HDD disks 6TB and larger is RAID-TEC.
  • For HDD disks 4TB up to 10TB in size, an aggregate can be created as RAID-DP and can also be converted from RAID-TEC to RAID-DP.
  • For HDD disks 16TB and larger, RAID-TEC is the only supported RAID policy.   
    • Any new aggregates and/or RAID groups must be created as RAID-TEC and the aggregates/RAID groups that are composed of 16TB or larger disks can not be converted from RAID-TEC to RAID-DP.

Additional Information

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