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High snap reserve after SCSI UNMAP

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Category:
ontap-9
Specialty:
core
Last Updated:

Applies to

  • ONTAP 9
  • SAN
  • Snapshot

Issue

  • The SCSI UNMAP feature is enabled on a SAN client that connects to a LUN
  • The LUN is unmounted and mounted
  • Space is reclaimed using UNMAP
  • Monitoring software alerts of greater than 90% snap reserve space usage for the volume

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