Symptoms

Errors similar to the following appear in the Avamar MC UI: Jul 29 03:39:27 <server> ipmiutil: igetevent: 0128 07/29/13 03:39:25 INF BMC Voltage #de BB +3.3V Vbat LoC thresh OK now actual=2.17 V, threshold=2.14 V Jul 29 03:49:31 <server> ipmiutil: igetevent: 0129 07/29/13 03:49:30 MAJ BMC Voltage #de BB +3.3V Vbat Lo Crit thresh actual=2.06 V, threshold=2.14 V Similar messages can also be seen in the /var/log/messages files on the affected data node. The healthcheck script (proactive_check.pl) may report the following: ERROR: Node (0.x) Sensor 'BB +3.3V Vbat' has unexpected status of 'nc' A Dial Home may also be sent.

Cause

Intel reports that this is likely caused by a poor contact between the battery and the (possibly weak) spring-loaded contacts within the battery slot. Also, oxidation may occur on the battery surfaces, which would also contribute to the poor contact, but this is secondary.

Resolution

1. Log in to the affected node as admin and switch to root: su - 2. Gather sysinfo logs. See Avamar: How to Collect Hardware Logs (sysinfo -ni) from Gen4s Avamar Hardware for more information. 3. Review the /tmp/Logfiles/OS_Eventlog.txt for voltage errors: grep Voltage /tmp/Logfiles/OS_Eventlog.txt Sample output: Apr 4 18:26:40 avamar ipmiutil: igetevent: 0145 04/04/14 18:26:39 INF BMC Voltage #de BB +3.3V Vbat LoC thresh OK now actual=2.17 V, threshold=2.14 V Apr 4 18:36:45 avamar ipmiutil: igetevent: 0146 04/04/14 18:36:44 MAJ BMC Voltage #de BB +3.3V Vbat Lo Crit thresh actual=2.13 V, threshold=2.14 V Apr 10 11:34:32 avamar ipmiutil: igetevent: 0171 04/10/14 11:34:28 INF BMC Voltage #de BB +3.3V Vbat LoC thresh OK now actual=2.17 V, threshold=2.14 V Note: The voltage threshold is less than 3.3V if there is an issue. 4. Confirm that the "BB +3.3V Vbat" is showing nc: ipmitool sdr list | grep Vbat BB +3.3V Vbat | 2.14 Volts | nc 5. Confirm Voltage "Lower Critical": ipmitool sel list | grep Voltage 180 | 04/14/2014 | 15:24:29 | Voltage #0xde | Lower Non-critical going low 193 | 04/24/2014 | 00:27:39 | Voltage #0xde | Lower Critical going low 194 | 04/24/2014 | 09:07:53 | Voltage #0xde | Lower Critical going low 195 | 04/25/2014 | 00:11:58 | Voltage #0xde | Lower Critical going low 6. Contact Dell Technical Support to replace the mode using the disk transplant procedure.

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