Problem determination tips
Because of the variety of hardware and software combinations that can encounter,
use the following information to assist you in problem determination. If possible,
have this information available when requesting assistance from IBM.
The model number and serial number of the server are located on the bottom on
the right side of the bezel, as shown in the following illustration.
Model number
and serial number
v Machine type and model
v Microprocessor or hard disk drive upgrades
v Failure symptom
– Does the server fail the diagnostic tests?
– What occurs? When? Where?
– Does the failure occur on a single server or on multiple servers?
– Is the failure repeatable?
– Has this configuration ever worked?
– What changes, if any, were made before the configuration failed?
– Is this the original reported failure?
v Diagnostic program type and version level
v Hardware configuration (print screen of the system summary)
v IMM firmware level
v Operating system software
You can solve some problems by comparing the configuration and software setups
between working and nonworking servers. When you compare servers to each
other for diagnostic purposes, consider them identical only if all the following factors
are exactly the same in all the servers:
v Machine type and model
v IMM firmware level
Chapter 3. Diagnostics 131
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