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Usable Space Increased in Aggregates After ONTAP 9.12.1 Upgrade

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Applies 

  • ONTAP 9.12.1
  • Aggregate 
  • FAS 500f 
  • NetApp AFF

Issue

Once cluster is upgraded to any version 9.12 and above, there is increase in size of aggregates with no manual intervention
 
Refer Below example :
 
  • Before 9.12.1, for an AFF cluster an 800TB aggregate had 720TB of usable space and the remaining 10% was the WAFL reserve.
  • After upgrading to ONTAP 9.12.1, the same aggregate has 760TB of usable space and 5% reserved for the WAFL reserve.
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