IBM RS6000 Service Guide - Page 267

Software and Microcode Errors Some SRNs indicate that a problem might have been caused by a software error or by a microcode error. If you have one of these SRNs, perform the following actions: 1. Make a note of the contents of the error log for the device that has the problem. 2. Go to the using-system service aids and select Display Vital Product Data to display the VPD of the failing system. Make a note of the VPD for all the SSA adapters and disk drive modules. 3. Report the problem to your support center. The center can tell you whether you have a known problem and can, if necessary, provide you with a correction for the software or microcode. FRU Names Used in the SRN Table This section provides a glossary of the FRU names used. FRU Name in Table Definition Backplane assembly The disk drive modules, blank disk drive modules, and internal SSA cables, are connected to the backplane assembly. Disk drive module A disk drive assembly to a carrier that plugs into the backplane in the system unit. Blank Disk drive module This module must be installed in a slot that does not contain a disk drive module. This completes the SSA loop through the system unit. External SSA cable A cable that connects the bulkhead to the SSA adapter or to an SSA subsystem. Internal SSA cable Attaches the backplane to the SSA adapter card. SSA adapter card The SSA adapter card, which is located in the using system. Appendix A. SSA Problem Determination Procedures A-5