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How to determine optimal unmap granularity

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Category:
virtual-storage-console-for-vmware-vsphere
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virt
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Applies to

  • Data ONTAP operating in 7-Mode
  • ONTAP 9
  • VMware ESXi
  • VMware vCenter Server
  • VMware Virtual Machine File System (VMFS) version 6

Description

According to VMware's documentation Space Reclamation Requests from VMFS Datastores when setting up automatic space reclamation for VMFS6 datastores you need to specify the unmap granularity based on the storage vendor's optimal unmap granularity