Sun Fire[TM] X4600 M2 Server: Some 8xDIMM CPU Modules Have Their DIMMs Installed in Incorrect Locations

Asset ID:	1-71-1004261.1
Update Date:	2012-07-30
Keywords:

Solution Type Technical Instruction Sure

Solution 1004261.1 : Sun Fire[TM] X4600 M2 Server: Some 8xDIMM CPU Modules Have Their DIMMs Installed in Incorrect Locations

Applies to:

Sun Fire X4600 M2 Server - Version Not Applicable and later
All Platforms
***Checked for relevance on 17-May-2012***

Goal

Check and correctly configure 8xDIMM memory modules on Sun Fire x4600 M2 servers.

Fix

Description
Disclaimer: Opening and examining CPU/memory modules and moving DIMMs will not void warranty when conforming with the instructions of this technical document and the service manual.

Instead of correctly populating DIMMs in pairs starting from white DIMM slots furthermost from the CPU (DIMM 6 and 7), DIMM pairs may be incorrectly populated in manufacturing starting from black DIMM slots closest to the CPU (DIMM 0 and 1). Incorrectly populated DIMMs have not been verified to work stably by Oracle engineering and should be avoided.

Steps to Follow
Affected part number: All x4600(M2) 8xDIMM CPU/memory module configurations.
Serial Number range: Contact Oracle support for more information.

Symptom:

Systems may experience intermittent power downs or panics when DIMMs are installed incorrectly.

Corrective Action:

Ensure all CPU/memory modules have DIMMs populated in pairs starting from white DIMM pair furthermost from CPU.

Reference docs:

Sun Fire X4600 and Sun Fire X4600 M2 Servers Service Manual - Appendix F

Please check system configuration before calling Oracle support. *

Disclosure:

Checking the CPU/memory module does not invalidate your warranty *

@ Previously Published As 91304

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