Hot-Swap of PSU on Sun Blade 6000/6048 Chassis May Cause Damage to Sun Blade X6250 Server Modules

Asset ID:	1-77-1267797.1
Update Date:	2010-11-18
Keywords:

Solution Type Sun Alert Sure

Solution 1267797.1 : Hot-Swap of PSU on Sun Blade 6000/6048 Chassis May Cause Damage to Sun Blade X6250 Server Modules

Applies to:

Sun Blade X6250 Server Module - Version: Not Applicable and later [Release: NA and later ]
SPARC
x86
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Date of Resolved Release: 18-Nov-2010
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Description

Hot-swap of a Power Supply Unit (PSU) on the Sun Blade 6000/6048 chassis with Sun Blade X6250 server(s) present may cause motherboard damage to one or more X6250 servers simultaneously, and the blades will no longer power on. As a result, blade replacement may be required.

Likelihood of Occurrence

This issue can occur on the following platform:

Sun Blade X6250 server (in Sun Blade 6000/6048 chassis)

Note: This issue only affects the Sun X6250 blades in the Sun Blade 6000/6048 chassis.

Possible Symptoms

If a PSU in the Sun Blade 6000/6048 chassis is hot-swapped while powered on, the ECB circuit on the X6250 blade motherboard may be damaged due to a voltage spike. This will cause the blade to become unusable, and the blade will not power on.

Workaround or Resolution

To avoid occurrence of this issue, either:

A) completely remove any X6250 blades from the 6000/6048 chassis before hot-swapping a PSU on the chassis

or

B) power down the whole chassis before replacing a PSU, even in a redundant power configuration scenario.

Modification History

18-Nov-2010: Released as Resolved

Please send technical questions to the following email:
sunalert-tech-questions@sun.com
and copy the Responsible Engineer and
the Oracle Knowledge Analyst
Internal Contributor/Submitter: mick.tabor@oracle.com
Internal Eng Responsible Engineer: tong-ming.zhou@oracle.com
Oracle Knowledge Analyst: david.mariotto@oracle.com
Internal Eng Business Unit Group: x64
Internal Escalation ID: 72488200, 72898196

References

SUNBUG:6946574

Attachments

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