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SRN FRU List Problem
42500 Fast-Write Cache Card (98%)
(“Exchanging the Fast-Write Cache
Card” on page 23)
SSA Adapter Card (2%) (Installation
and User Guide)
Description: The Fast-Write Cache Card has failed.
Action:
1. Exchange the Cache Card for a new one
2. Switch on power to the using system
3. New error codes are produced if the original cache card
contained data that was not moved to a disk drive. Run
diagnostics on the adapter and if a SRN is produced, do
the actions for that SRN.
42510 None Description: Not enough DRAM available to run the fast-write
cache operation.
Action:
1. Start the using-system service aids.
2. Select Display or Change Configuration or Vital Product
Data (VPD).
3. Select Display Vital Product Data.
4. Find the VPD for the SSA adapter that is logging the error.
5. Note the DRAM and cache sizes (Device Specifics Z0 and
Z1).
6. For fast-write operations, you must have a 32 MB DRAM.
Check that you have the correct size of DRAM.
42515 Fast-write Cache Card (90%)
“Exchanging the Fast-Write Cache Card”
on page 23)
SSA adapter card (10%) (using system
Installation and Users Guide
)
Description: A fast-write disk is installed, but no Fast-Write
Cache Card has been detected. This problem can be caused
because:
The cache card is not installed correctly.
The Fast-Write feature is not installed on this machine, but
a disk drive that is configured for fast-write operations has
been added to the subsystem.
Action:
1. If you have not already done so, run diagnostics on the
adapter. If a different SRN is generated solve that problem
first.
2. Do the following actions as appropriate:
If the cache card is not installed correctly, remove it
from the adapter and reinstall it correctly.
If the cache card is installed correctly, it might have
failed. Exchange for new FRUs, the FRUs that are
shown in the FRU list for this SRN.
If the Fast-Write feature is not installed, and you want
to delete the fast-write function for one or more disk
drives that have been added to this subsystem:
3. Verify with the customer that the fast-write function can be
deleted for the disk drives configured for fast-write.
4. Using the RSM configurator, select the resource in question
and select Delete FW. See “Dealing with Fast-Write
Problems” on page 12 for more details.
6 IBM SerialRAID Adapter Maintenance Information