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, do

the

following actions:

 

1. Make

a

note

of the contents of the error log

for

the

device

that

has the

prob

2.

Go

to

the

system

service aidsDisplayandVital selectProduct

Data

to

display

 

 

 

 

 

the

VPD

of

the failing system. Make a note of

the

VPD for

all

the

SSA adapters

 

and

disk

drives.

 

 

 

 

 

 

 

 

 

 

 

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.

 

 

 

 

 

 

 

 

 

 

SSA Loop Configurations that Are Not Valid

Note: This section is related to SRN 48000.

SRN 48000 shows that the SSA loop contains more devices or adapters than are allowed. The maximum numbers allowed depend on the adapterIBM. Refer to the SerialRAID Adapter: Installation and Usefor'sdetailsGuide.

If the SRN occurred when you or the customer turned on the system:

1.Turn off the system.

2.Review the configuration that you are trying to make, and determine why that configuration is not valid.

3.Correct your configuration by reconfiguring the SSA cables or by removing the

excess devices or adapters from the loop.

4. Turn on the system.

If

the

SRN

occurred

because

additional devices

or adapters

were added to a workin

SSA

loop:

 

 

 

 

 

 

 

 

 

1. Remove

the

additional

devices or adapters that are causing the problem, and put

 

the

loop

back into

its

original, working

configuration.

 

 

Note: It is important that you do, thbecauseactionsthey enable the

 

configuration

code

to

reset

itself from

the

effects of

the error.

2.Review the configuration that you are trying to make, and determine why that configuration is not valid.

3.Correct your configuration by reconfiguring the SSA cables or by removing the excess devices or adapters from the loop.

Dealing with Fast-Write Problems

Fast-Write problems are indicated by Service Request Numbers (SRNs): in the series 425xx.

12 IBM SerialRAID Adapter Maintenance Information

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IBM SY33-0193-00 manual Software and Microcode Errors, SSA Loop Configurations that Are Not Valid