Memory Restriction; System Buses - IBM p5 550 Technical Overview And Introduction

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Figure 2-6 Memory placement for the p5-550

2.3.2 Memory restriction

The p5-550 does not officially support OEM memory, and there is no exception to this rule.

OEM memory is never certified for the use in pSeries and the new p5 servers. If the p5-550 is

populated with OEM memory, you could experience unexpected and unpredictable behavior.

All IBM memory is identified by an IBM logo and a white label printed with a barcode on top

and an alphanumeric string on the bottom, created according to the rule reported in

Figure 2-7.

Figure 2-7 IBM memory certification label

Sometimes OEM vendors put a label reporting the IBM memory part number but not the

barcode or the alphanumeric string, or both on their DIMMs.

In case of system failure caused by OEM memory installed in the system, the first thing to do

is to replace the suspected memory with IBM memory and check whether the problem is

corrected. Contact your IBM representative for further assistance if needed.

The following sections provide additional information related to the internal buses.

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Twelve digits

Seven digits

IBM plant identificator

IBM part number

and part serial number

FRU P/N EC Level

Chapter 2. Architecture and technical overview

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