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What are some considerations when configuring -atime-update?

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Applies to

  • ONTAP 9
  • -atime-update (Access Time Update)


-atime-update (access time update) is a volume-level field to manage access time updates on files and directories that are read using READ, READLINK, and READDIR.

It is recommended to disable -atime-update in the following scenarios due to possible performance impacts:

  • When using FlexCache in ONTAP versions earlier than 9.11.1
  • When using SQL workloads
  • When using VMware Virtualization for ONTAP

Note: when using FabricPool, enabling -atime-update is not required because FabricPool works at the block level.


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