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nvmem.battery.voltageLow is reported and recovers automatically

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Applies to

  • AFF-C250
  • ONTAP 9.14.1P4
  • BMC FW 15.11

Issue

  • EMS reports the nvmem.battery.voltageLow error 
[nvmem.battery.voltageLow:EMERGENCY]: The NVMEM battery voltage is critically low (3550 mV). To prevent data loss, the system will shut down in 5 minutes.
  • Alert is cleared and battery reading normal shortly after

[nvmem.battery.voltage.normal:info]: The NVMEM battery voltage is normal.
[monitor.shutdown.cancel:notice]: Automatic shutdown sequence canceled.

  • Following events can be seen in BMC event logs:

 5df | 01/01/2000 | 00:00:19 | Battery #0x4a | State Deasserted
 5e0 | 01/01/2000 | 00:00:19 | Battery #0x4b | State Asserted
 5e1 | 01/01/2000 | 00:00:19 | Battery #0x4c | State Asserted
 5e2 | 01/01/2000 | 00:00:19 | Battery #0x4d | State Deasserted
 5e3 | 01/01/2000 | 00:00:19 | Other FRU #0x50 | 
 5e4 | 01/01/2000 | 00:00:19 | Other FRU #0x50 | 
 5e5 | 01/01/2000 | 00:00:19 | Other FRU #0x50 | 
 5e6 | 01/01/2000 | 00:00:19 | Other FRU #0x50 | 
 5e7 | 01/01/2000 | 00:00:25 | Power Supply #0x20 | Presence detected | Asserted
 5e8 | 01/01/2000 | 00:00:25 | Power Supply #0x25 | Presence detected | Asserted
 5e9 | 01/01/2000 | 00:00:25 | Power Supply #0x72 | Presence detected | Asserted
 5ea | 01/01/2000 | 00:00:25 | Power Supply #0x73 | Presence detected | Asserted
 5eb | OEM record f2 | Watchdog1 Timeout
 5ec | OEM record f2 | Pilot Software reset
 5ed | 01/01/2000 | 00:00:39 | Battery #0x4f | State Deasserted
 5ee | 01/01/2000 | 00:02:19 | System Event #0xff | Timestamp Clock Sync | Asserted
 5ef | 09/12/2024 | 05:35:54 | System Event #0xff | Timestamp Clock Sync | Asserted
 5f0 | 09/14/2024 | 05:35:52 | System Event #0xff | Timestamp Clock Sync | Asserted
 5f1 | 09/14/2024 | 05:35:54 | System Event #0xff | Timestamp Clock Sync | Asserted

  • Alerts are seen outside of a learning cycle.

 

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