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Why is my performance tier more full than the tiering-fullness-threshold?

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Category:
ontap-9
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CORE
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Applies to

  • ONTAP 9
  • FabricPool

Answer

  • tiering-fullness-threshold does not indicate maximum amount of data stored in the performance tier
  • tiering-fullness-threshold specifies the percentage of space in the performance tier which must be used before data is tiered out to the capacity tier
  • With the default value of 50%, a 10TB aggregate will only start tiering data once it reaches 5TB of used space

Additional Information

  • The tiering-policy all ignores the tiering-fullness-threshold and data is tiered irrespective of the tiering fullness threshold
  • To modify the tiering-fullness-threshold: storage aggregate object-store modify
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