IBM RS/6000 manual Scsi

To use this service aid, the

user

should

have

an

understanding of

how

a

works. This service aid should

be

used

when the

diagnostics

cannot

communi

with anything on the SCSI

bus and

cannot

isolate

the

problem. Normally

the

p

dure for finding a problem on

the

SCSI

bus

with

this service

aid

is

to

single device

attached,

ensure

that

it

is

working,

then start

adding add

and

cables to

the

bus

ensuring

that

each

one

works. This service

aid

wi

any

valid SCSI

Bus

configuration.

The SCSI Bus Analyzer Task service aid transmits a SCSI inquiry command to selectable SCSI address. The service aid then waits for a response. If is received within a defined amount of time, the service aid will displa message. If an error occurs or a response is received, the service ai display one of the following messages:

ŸThe service aid transmitted a SCSI inquiry command and re￿ceived a valid response back without any errors being detected.

ŸThe service aid transmitted a SCSI inquiry command and di￿d not receive any response or error status back.

ŸThe service aid transmitted a SCSI inquiry command and th￿e adapter indicated a SCSI bus error.

ŸThe service aid transmitted a SCSI inquiry command and an￿ adapter error occurred.

ŸThe service aid transmitted a SCSI inquiry command and a c￿heck condition occur.

When the SCSI Bus Analyzer Task service aid is entered, a description of service aid displays.

Pressing the			Enter	key will display		the	Adapter Selection menu.			This	menu all
the	user	to	enter	which	address	to	transmit	the SCSI	inquiry	command.
When	the	adapter		is selected, the SCSI Bus Address					Selection	menu	display
menu	allows	you to		enter	which SCSI	address to		transmit	the SCSI inquiry

command.

Once the address is selected, the SCSI Bus Test Run menu displays. This allows the user to transmit the SCSI inquiry command by pressing the Enter The service aid then indicates the status of the transmission. When the completes, the results of the transmission displays.

7-20RS/6000 Enterprise Server Model H Series User's Guide