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MAP 3120

Use this MAP to resolve the following problem: Cache data associated with attached disks cannot be found (SRN nnnn - 9010)

Step 3120-1

Is the adapter connected in an HA RAID configuration (that is, two adapters connected to the same set of disks)?

No
Go to Step 3120-2.
Yes
Contact your hardware service provider.

Step 3120-2

Has the server been powered off for several days?

No
Go to Step 3120-3.
Yes
Go to Step 3120-8.

Step 3120-3

Are you working with a 572F/575C card set?

No
Go to Step 3120-5.
Yes
Go to Step 3120-4.

Step 3120-4

Note: Label all parts (original and new) before moving them.
Using the appropriate service procedures, remove the 572F/575C card set. Create and install the new card set that has the following parts installed on it:
  • The new replacement 572F storage I/O adapter
  • The cache directory card from the original 572F storage I/O adapter
  • The original 575C auxiliary cache adapter
Note: See Separating the 572F/575C card set and moving the cache directory card to locate the parts in the preceding list.

Go to Step 3120-6.

Step 3120-5

Note: Label all parts (original and new) before moving them.
Using the appropriate service procedures, remove the I/O adapter. Install the new replacement storage I/O adapter with the following parts installed on it:
  • The cache directory card from the original storage I/O adapter. Refer to Replacing the cache directory card.
  • The removable cache card from the original storage I/O adapter, if the original adapter contained a removable cache card. This applies only to certain adapters that have a removable cache card. Verify that the storage I/O adapter is listed in the feature comparison tables for PCIe and PCI-X cards as having Yes in the column for Removable Cache Card.

Step 3120-6

Has a new SRN of nnnn-9010 or nnnn-9050 occurred?

No
Go to Step 3120-9.
Yes
Go to Step 3120-7.

Step 3120-7

Was the new SRN nnnn-9050?

No
The new SRN was nnnn-9010. Reclaim the controller cache storage as follows:
Attention: Data might be lost. When an auxiliary cache adapter connected to the RAID controller logs a nnnn - 9055 SRN in the hardware error log, the reclaim process does not result in lost sectors. Otherwise, the reclaim process does result in lost sectors.
  1. Start the IBM® SAS Disk Array Manager.
    1. Start AIX® diagnostics and select Task Selection on the Function Selection screen.
    2. Select RAID Array Manager.
    3. Select IBM SAS Disk Array Manager.
  2. Select Diagnostics and Recovery Options.
  3. Select Reclaim Controller Cache Storage.
  4. Select the IBM SAS RAID Controller.
  5. Confirm that you wish to proceed.
    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.
  6. Go to Step 3120-9.
Yes
Contact your hardware service provider.

Step 3120-8

If the server has been powered off for several days after an abnormal power-down, the cache battery pack might be depleted. Do not replace the adapter or the cache battery pack. Reclaim the controller cache storage as follows:

Attention: Data might be lost. When an auxiliary cache adapter connected to the RAID controller logs a nnnn - 9055 SRN in the hardware error log, the reclaim process does not result in lost sectors. Otherwise, the reclaim process does result in lost sectors.
  1. Start the IBM SAS Disk Array Manager.
    1. Start Diagnostics and select Task Selection on the Function Selection screen.
    2. Select RAID Array Manager.
    3. Select IBM SAS Disk Array Manager.
  2. Select Diagnostics and Recovery Options.
  3. Select Reclaim Controller Cache Storage.
  4. Select the IBM SAS RAID Controller.
  5. Confirm that you wish to proceed.
    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.

When the problem is resolved, see the removal and replacement procedures topic for the system unit on which you are working and do the "Verifying the repair" procedure.

Step 3120-9

Are you working with a 572F/575C card set?

No
Go to Step 3120-11.
Yes
Go to Step 3120-10.

Step 3120-10

Note: Label all parts (original and new) before moving them.
Using the appropriate service procedures, remove the 572F/575C card set. Create and install the new card set that has the following parts installed on it:
  • The new replacement 572F storage I/O adapter
  • The cache directory card from the new replacement 572F storage I/O adapter
  • The new 575C auxiliary cache adapter
Note: See the figure at Separating the 572F/575C card set and moving the cache directory card to find the locations of the parts in the preceding list.

When the problem is resolved, see the removal and replacement procedures topic for the system unit on which you are working and do the "Verifying the repair" procedure.

Step 3120-11

Using the appropriate service procedures, remove the I/O adapter. Install the new replacement storage I/O adapter with the following parts installed on it:
  • The cache directory card from the new storage I/O adapter. Refer to Replacing the cache directory card.
  • The removable cache card from the new storage I/O adapter, if the new adapter contains a removable cache card. This applies only to certain adapters that have a removable cache card. Verify that the storage I/O adapter is listed in the feature comparison tables for PCIe and PCI-X cards as having Yes in the column for Removable Cache Card.

When the problem is resolved, see the removal and replacement procedures topic for the system unit on which you are working and do the "Verifying the repair" procedure.

Parent topic: Controller maintenance analysis procedures