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How to convert a volume or LUN from thick to thin provisioned

Last Updated:

Applies to

  • ONTAP 9
  • Space Guarantee
    • Logical Unit Number (LUN)
    • Volume


  • A thick to thin conversion means to remove the reservations and guarantees
  • NetApp storage model starts with the RAID group
    • RAID groups are combined into pools of storage called Aggregates
  • Aggregates are partitioned into logical containers called FlexVols
    • Either LUNs or files can reside in FlexVols
  • A thin LUN is given the illusion of being thick by reserving space within the Flexvol for the full size of the LUN


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