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Why the parameter arw.snap.max.count cannot be set below 3

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Applies to

  • ONTAP version 9.11.1 or later
  • Autonomous Ransomware Protection (ARP)

Answer

  • The parameter arw.snap.max.count defines the maximum number of ARP snapshots that can exist in a volume at any given time.
  • The minimum value of 3 is a design requirement to maintain a rolling recovery window.
  • Maintaining multiple snapshots provides more recovery points in the event of a ransomware attack, enhancing data protection.
  • The specific technical reason for the minimum value is not published; however, it is intended to ensure reliable recovery capability.
  • Users may adjust these parameters according to their operational requirements; however, there is no officially defined best practice for their configuration.

Additional Information

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