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Slow performance from E-Series causing "performance has deteriorated" ESXi messages

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Applies to

  • E2800
  • E5700
  • SANtricity OS 11.50.1
  • SANtricity OS 11.70.3
  • SANtricity OS 11.70.4
  • VMware environments

Issue

  • Virtual machines and/or backups are inoperable.
  • The task within virtual machines that usually finish quickly, such as opening Explorer, takes several tens of seconds.
  • High latency observed on affected volume from SANtricity System Manager performance graph.
  • Following alert is reported from ESXi:
WARNING: ScsiDeviceIO: 1188: Device naa.600a098000fd787e0000019a5f7c3325 performance has deteroriated

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