Overtemp conditions for the Internal 8-port SAS RAID HBA (Cougar) in T5x20 and T5x40

Asset ID:	1-72-1503161.1
Update Date:	2017-10-05
Keywords:

Solution Type Problem Resolution Sure

Solution 1503161.1 : Overtemp conditions for the Internal 8-port SAS RAID HBA (Cougar) in T5x20 and T5x40

Applies to:

Sun SPARC Enterprise T5220 Server - Version All Versions to All Versions [Release All Releases]
Sun SPARC Enterprise T5240 Server - Version All Versions to All Versions [Release All Releases]
Sun SPARC Enterprise T5140 Server - Version All Versions to All Versions [Release All Releases]
Sun SPARC Enterprise T5120 Server - Version All Versions to All Versions [Release All Releases]
Information in this document applies to any platform.

Symptoms

In T5xx0 servers with Internal Cougar HBA installed for SAS disks "arcconf getconfig 1" command shows that the baterry is over temperature. There are also errors reported in /var/adm/messages. Example below:

# ./arcconf GETCONFIG 1
Controllers found: 1
------------------------
Controller information
------------------------
Controller Status : Optimal
Channel description : SAS/SATA
Controller Model : Sun STK RAID INT
Controller Serial Number : 00826AA0954
Temperature : 106 C/ 222 F (Abnormal)

In the same output below you can notice that the "Over temperatyre" is set to "Yes":

--------------------------------------------------------
Controller Battery Information
--------------------------------------------------------
Status : Charging disabled
Over temperature : Yes
Capacity remaining : 100 percent
Time remaining (at current draw) : 3 days, 10 hours, 56 minutes
----------------------------------------------------------------------

Error in messages will look like:

7 november 2008 12.11.41 CET <hostname> The battery has exceeded normal operating temperature: controller 2.

Cause

The overtemps and high temperatures are reported by the StorageTek RAID manager for the Cougar HBA.

The STK raid controller GUI is showing that the HBA controller exceeded normal operating temperature and it's battery has exceeded temperature as well. As a result the temp issue may be causing the battery to discharge.

The fans do not run at sufficient speed to cool a RAID HBA (cougar) battery. Typically we have found this to be around 60% max RPM.

Solution

Issue is resolved in firmware revision 7.2.2.b (patch 139444-02 or later). However it is always best to keep the system up-to-date and upgrade to latest revision possible.

References

http://docs.oracle.com/cd/E19839-01/E23172-01/E23172-01.pdf
http://docs.oracle.com/cd/E19712-01/820-4754-12/820-4754-12.pdf

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