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Storage efficiency deprioritized on a volume

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Category:
ontap-9
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CORE
Last Updated:

Applies to

  • ONTAP 9.3 and later
  • All Flash FAS (AFF)
  • Automatic volume-level background deduplication

Issue

  • Storage efficiency has been deprioritized on a large volume on the platform
  • After turning on volume efficiency, the space-saving is not as expected
  • Alarm received:

There are volumes that are >15TB's in size which have efficiency savings deprioritised
Triggered Alarm: There are volumes that are >15TB's in size which have efficiency savings deprioritised - warning
Alarm Description: “Volume vol1 in SVM1 is deprioritised and the size of volume is 110T”

  • SiS log:

Mon Feb 27 13:06:31 CST 2023 [Vserver UUID: 42453882-d02c-11e8-8927-xxxxxx] /vol/volume_name [sid: 0] Info (ADS: Volume is deprioritized due to less savings)
Mon Feb 27 13:06:31 CST 2023 [Vserver UUID: 42453882-d02c-11e8-8927-xxxxxx] /vol/volume_name [sid: 0] Info (Dense auto-state was changed from "Change log enabled" to "Deprioritized".)

 

 

 

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