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

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