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Do RAID scrubs hurt performance?

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ontap-9
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perf
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Applies to

All versions of ONTAP or Data ONTAP

Answer

  • Raid scrubs, as configured by default, are made to do background checking for media or parity issues.
  • Starting in 2003, a feature was introduced to check the disk load in bug 73250 and since then that has been a part of the default methodology.

Additional Information

What does raid.media_scrub.enable option do?

What are the important changes to RAID scrub in Data ONTAP 8.3.x or later