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E-Series performance issue due to faulty drive

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Applies to

NetApp E-Series

Issue

  • E-Series host reports performance problems on all volumes or some of them.
  • MAJOR-EVENT-LOG (MEL) shows Slow drive detected by drive performance analyzer or other drive check conditions

A:6/29/23 9:39:39 PM (21:39:39) 45373 1021 Slow drive detected by drive performance analyzer. Info for Analysis Purposes - Shelf 99, Drawer 5, Bay 6 <--DEBUG
A:6/29/23 9:39:39 PM (21:39:39) 45372 1021 Slow drive detected by drive performance analyzer. Info for Analysis Purposes - Shelf 99, Drawer 3, Bay 3 <--DEBUG

  • MEL may also not report any errors. However, from the host side we can see 1 single drive having higher latency than others with tools such as iostat

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