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FAS9000 nvram.battery.sensor.unreadable causes node shutdown

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ontap-9
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hw
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Applies to

  • FAS9000
  • SP 4.11
  • ONTAP 9

Issue

A FAS9000 node reboots due to unreadable battery sensors:
 
[cluster1-04: env_mgr: nvram.battery.sensor.unreadable:EMERGENCY]: The NVRAM battery state cannot be determined because the 'Bat Cycle Count' sensor is unreadable. To prevent data loss, the system will shut down in 5 minutes.
[cluster1-04: env_mgr: callhome.battery.failure:EMERGENCY]: Call home for BATTERY ('Bat Cycle Count' unreadable) CRITICAL.

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