IBM Support

'Warning: Battery temperature is high' in MegaRAID Storage Manager - IBM System x3550 M3

Troubleshooting


Problem

After manually or automatically starting a Battery Backup Unit (BBU) relearn cycle every 30 days in IBM MegaRAID Storage Manager (MSM) and waiting 10 seconds before hitting the Refresh Properties button, the BBU temperature will increase to 53 degrees Celsius (127.4 degrees Fahrenheit). The battery relearn cycle will stop and the MSM application will show the following warning message: Warning: Battery temperature is high

Resolving The Problem

Source

RETAIN tip: H202401

Symptom

After manually or automatically starting a Battery Backup Unit (BBU) relearn cycle every 30 days in IBM MegaRAID Storage Manager (MSM) and waiting 10 seconds before hitting the Refresh Properties button, the BBU temperature will increase to 53 degrees Celsius (127.4 degrees Fahrenheit).

The battery relearn cycle will stop and the MSM application will show the following warning message:

  Warning: Battery temperature is high

Affected configurations

The system may be any of the following IBM servers:

  • System x3550 M3, type 4254, any model
  • System x3550 M3, type 7944, any model

The system is configured with one or more of the following IBM Options:

  • ServeRAID M5014 SAS/SATA Controller, Option part number 46M0916, replacement part number (CRU) 46M0918
  • ServeRAID M5015 SAS/SATA Controller, Option part number 46M0829, replacement part number (CRU) 46M0851
  • ServeRAID M5025 SAS/SATA Controller, Option part number 46M0830, replacement part number (CRU) 46M0854

This tip is not software specific.

The system is configured with one CPU's.

Solution

This behavior has been corrected by Integrated Management Module (IMM) code version 1.33 (YUOOE3C) or later.

After applying the fix, remove the filler for empty FAN6. For more details, see the following images:

  .cogent_24173_filler-location.jpg

 

  cogent_24173_filler.jpg

The file is or will be available by selecting the appropriate Product Group, type of System, Product name, Product machine type, and Operating system on IBM Support's Fix Central web page, at the following URL:

Additional information

This issue was discovered in a specific configuration when one Central Processing Unit (CPU) and one Power Supply Unit (PSU) is installed while the ambient temperature is between 20 and 22 degrees Celsius (68 - 71.6 degrees Fahrenheit). The fan speed of the power supply is low, which results in a poor thermal condition for the BBU.

IMM version 1.33, or later has a modified fan speed table to improve the Intelligent Battery Backup Unit (iBBU) thermal condition.



Document Location

Worldwide

Operating System

System x:Operating system independent / None

System x Hardware Options:Operating system independent / None

[{"Type":"HW","Business Unit":{"code":"BU016","label":"Multiple Vendor Support"},"Product":{"code":"QU04SMA","label":"System x->System x3550 M3->7944"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Line of Business":{"code":"","label":""}},{"Type":"HW","Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"QU04SPC","label":"System x->System x3550 M3->4254"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Line of Business":{"code":"","label":""}}]

Document Information

Modified date:
30 January 2019

UID

ibm1MIGR-5087154

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