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What is the purpose of the "arw.entropy_calc.fbn.limit" option in ONTAP

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Applies to

ONTAP 9.15.1

Answer

  • The arw.entropy_calc.fbn.limit option:
    • Controls the limit for the number of file block numbers (FBN) used in entropy calculations.
    • Aims to improve system performance by restricting the maximum number of blocks involved in entropy calculations.
  • Behavior when not recorded in OPTIONS.txt:
    • If the option is not explicitly listed in OPTIONS.txt, the system operates with its default configuration.
    • ONTAP retains the same operational behavior as before the upgrade unless explicitly changed.

Additional Information

  • The presence of this option in ONTAP 9.15.1 but not in earlier is due to enhancements introduced in the newer ONTAP version.
  • This change is a result of the ONTAP upgrade and reflects new functionality or optimizations.
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