Use this procedure to resolve the following problem: Required
cache data cannot be located for one or more disk units (SRC xxxx9050).
- Did you just exchange the adapter as
the result of a failure?
- No:
- Go to step 6.
- Yes:
- Go to step 2.
- Is the adapter connected in a dual storage
adapter configuration (that is, two adapters connected to the same
set of disk units)?
- No:
- Go to step 3.
- Yes:
- Contact your hardware service provider.
- Are you working with a 572F/575C card
set?
- No:
- Go to step 5.
- Yes:
- Go to step 4.
- Using the appropriate service procedures,
remove the adapter card set. Install the new replacement storage adapter
with the following parts installed on it:
Note: Label all
parts (original and new) before moving them.
Go to step 11.
-
Attention: - The failed adapter that you have just exchanged contains cache
data that is required by the disk units that were attached to that
adapter. If the adapter that you just exchanged is failing intermittently,
reinstalling it and performing an IPL of the system might allow the
data to be successfully written to the disk units. After the cache
data is written to the disk units and the system is powered off normally,
the adapter can be replaced without data being lost. Otherwise, continue
with this procedure.
- Label all parts (original and new) before moving them.
Using the appropriate service procedures, remove the
adapter. Install the new replacement storage adapter with the following
parts installed on it:
- The cache directory card from the original storage adapter. Refer
to Replacing the cache directory card.
- The removable cache card from the original storage adapter. This
applies only to certain adapters that have a removable cache card.
Go to step 11.
- Identify the affected adapter and disk
units by examining the Product Activity Log. Perform the following
steps:
- Access SST/DST.
- Access the product activity log and record address information.
- If a type D IPL was not performed to get to SST/DST:
- The log information is formatted. Access the Product Activity
Log and display the SRC that sent you here. Press the F9 key for address
information. This is the adapter address. Then, press F12 to cancel
and return to the previous screen. Then press the F4 key to view
the additional information to record the formatted log information.
The Device Errors detected field indicates the total number of disk
units that are affected. The Device Errors Logged field indicates
the number of disk units for which detailed information is provided.
Under the Device heading, the unit address, type, serial number,
and worldwide ID are provided for up to three disk units. Additionally,
the adapter type, serial number, and worldwide ID for each of these
disk units indicates the adapter to which the disk was last attached
when it was operational.
- If a type D IPL was performed to get to DST:
- The log information is not formatted. Access the product activity
log and display the SRC that sent you here. The direct select address
(DSA) of the adapter is in the format BBBB-Cc-bb:
- BBBB
- Hexadecimal offsets 4C and 4D
- Cc
- Hexadecimal offset 51
- bb
- Hexadecimal offset 4F
In order to interpret the hexadecimal information
to get device addresses, see More information from hexadecimal
reports. The Device Errors Detected field indicates
the total number of disk units that are affected. The Device Errors
Logged field indicates the number of disk units for which detailed
information is provided. Under the Device heading, the unit address,
type, serial number, and worldwide ID are provided for up to three
disk units. Additionally, the adapter type, serial number, and worldwide
ID for each of these disk units indicates the adapter to which the
disk was last attached when it was operational.
- Determine the location of the adapter and the devices
that are causing the problem. See System FRU locations and
find the diagram of the system unit or the expansion unit. Then find
the following items:
- The card slot that is identified by the direct select address
(DSA)
- The disk unit locations that are identified by the unit addresses
Have you determined the location of the adapter and the devices
that are causing the problem? - No: Ask your next level of support for assistance. This
ends the procedure.
- Yes: Continue with the next step.
- Have the adapter or disk units been physically
moved recently?
- No:
- Contact your hardware service provider.
- Yes:
- Go to step 8.
- Is the data on the disk units needed
for this or any other system?
- No:
- Go to step 10.
- Yes:
- Go to step 9
- Restore the adapter and disk units back
to their original configuration. The adapter and disk
units must be rejoined so that the cache data can be written to the
disk units.
After the cache data is written to the disk units and
the system is powered off normally, the adapter or disk units can
be moved to another location. This ends the procedure
- Perform only one of the following options,
listed in the order of preference:
- Option 1
- Reclaim adapter cache storage. See Reclaiming IOP cache storage.
Attention: Data on the disk array will
be lost.
This ends the procedure.
- Option 2
- If the data on the disk units is not needed, initialize and format
the disk units by performing the following steps:
Attention: Data
on the disk units will be lost.
- If a type D IPL was not performed to get to SST or DST:
- Access SST or DST.
- Select .
- Select Initialize and format disk unit for each disk unit. When
the new disk unit is initialized and formatted, the display shows
that the status is complete. This might take 30 minutes or much longer
depending on the capacity of the disk unit. The disk unit is now ready
to be added to the system configuration. This ends the procedure.
- If a type D IPL was performed to get to DST:
- Access DST.
- Select Work with disk units.
- Select Initialize and format disk unit for each disk unit. When
the new disk unit is initialized and formatted, the display shows
that the status is complete. This might take 30 minutes or much longer
depending on the capacity of the disk unit. The disk unit is now ready
to be added to the system configuration. This ends the procedure.
- Has a new SRC xxxx9010 or xxxx9050
occurred?
- No:
- Go to step 13.
- Yes:
- Go to step 12.
- Was the new SRC xxxx9050?
- No:
- The new SRC was xxxx9010.
Reclaim adapter cache storage.
See Reclaiming
IOP cache storage..
Attention: Data might be lost. When
an auxiliary cache adapter connected to the RAID adapter logs an xxxx9055
SRC in the hardware error log, the reclaim process does not result
in lost sectors. Otherwise, the reclaim process does result in lost
sectors.
Note: On the Reclaim Controller Cache Storage results
screen, the number of lost sectors is displayed. If the number is
0, there is no data loss. If the number is not 0, data has been lost
and the system operator might want to restore data after this procedure
is completed.
Go to step 13
- Yes:
- Contact your hardware service provider.
- Are you working with a 572F/575C card
set?
- No:
- Go to step 15.
- Yes:
- Go to step 14.
- Using the appropriate service procedures,
remove the adapter card set. Install the new replacement storage adapter
with the following parts installed on it:
This ends the procedure.
- Using the appropriate service procedures,
remove the adapter. Install the new replacement storage adapter with
the following parts installed on it:
- The cache directory card from the new storage adapter. See Replacing the cache directory card.
- The removable cache card from the new storage adapter. This only
applies to certain adapters that have a removable cache card.
This ends the procedure.
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