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Multiple H410 nodes down Block Service Unhealthy and Amber light on due to over temperature event

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Category:
h-series
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hci
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Applies to

  • NetApp HCI/SolidFire Element OS
  • H-Series nodes  H410S, H410C
  • 2U H-Series  chassis

Issue

  • After a sudden failure of the data center air conditioning (AC) system, the environment temperature exceeded operational limits.  As a result multiple H410 nodes in  2U H-Series chassis  became offline and unresponsive.
Alerts reported :
  • nodeOffline - The SolidFire Application cannot communicate with Storage node having node ID X.
  • blockServiceUnhealthy - Block service(s) on more than one node are unhealthy. Data unavailability is possible and rebuild may be blocked.
  • nvramDeviceStatus - NVRAM device warning={capacitor1And2Temperature: 51.65 C, capacitor3And4Temperature: 55.54 C, fanInletAmbientTemperature: 64.54 C} 
  • Nodes did not power on after temperature normalization
  • Chassis showed only amber lights on both PSUs
  • Attempts to power drain or reseat power supplies were unsuccessful.
  • All attempts to restore service by power cable replacement  , PSU replacement or power cycling failed.

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