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ONTAP create Single Instance Storage (SIS) clone fails and reverts to using Block Copy Engine (BCE)

Last Updated:

Applies to

  • Clustered ONTAP 8.x
  • ONTAP 9.x
  • NetApp VMware VAAI Copy Offload Plugin (vStorage API for Array Integration)


  • SIS clones take 15 seconds to create and are used for bulk deployment of VM's.
  • Data ONTAP cannot create a Single Instance Storage (SIS) clone it will instead revert to using the traditional Block Copy Engine (BCE) that can take hours for a large VM.
  • Data ONTAP has a deduplication logical size data limit of 640 TB regardless of the size of the volume.


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