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SRN FRU List Problem
42522 Fast-Write Cache Card (100%)
(“Exchanging the Fast-Write Cache
Card” on page 23)
Description: A Fast-Write Cache card has failed. Data has been
written to the card and cannot be recovered. One or more 4 KB
blocks of data for a known disk have been lost and cannot be
read.
Action:
1. Ask the customer to determine:
Which disk drives are affected by this error
How much data has been lost
Which data recovery procedures can be done
2. Ask the customer to disable Fast-Write for:
Each device for which the Fast-Write is offline
All other devices that are connected to the failing
adapter and have the Fast-Write enabled
For details of how to disable Fast-Write see “Dealing
with Fast-Write Problems” on page 12.
3. Exchange the Fast-Write Cache card for a new one.
4. Ask the customer to re-enable Fast-Write for the devices
that are attached to the new Fast-Write Cache Card.
42523 None Description: The Fast-Write Cache Card has a bad version
number.
Action: Install the correct adapter microcode for this card.
42524 Fast-Write Cache Option Card (100%) Description: A fast-write disk drive (or drives) that does not
contain synchronized data has been detected. The Fast-Write
Cache Card, however, cannot be detected. The disk drive (or
drives) is offline.
Action:
If the Fast-Write Cache Card has been removed, reinstall it.
If the Fast-Write Cache card has failed:
1. Ask the customer to disable the Fast-Write for:
– Each device for which the Fast-Write is offline
– All other devices that are connected to the failing
adapter, and have Fast-Write enabled
For details of how to disable Fast-Write see
“Dealing with Fast-Write Problems” on page 12.
2. Exchange the Fast-Write Cache Card for a new one.
3. Ask the customer to re-enable Fast-Write for the
devices that are attached to the new Fast-Write Cache
Card.
8 IBM SerialRAID Adapter Maintenance Information