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Transient High Latency During Disk Shelf Expansion

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Category:
ontap-9
Specialty:
perf
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Applies to

  • NetApp AFF-A400
  • ONTAP 9.7P11
  • All Flash FAS (AFF) platforms
  • Disk shelf expansion/maintenance events

Issue

During a scheduled disk shelf expansion, observed a spike in latency across multiple volumes.
The latency spike lasted about one minute and was correlated with disk I/O anomalies.

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