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Reclaiming IOA cache storage

A reclamation procedure for IOA cache storage is sometimes used to resolve cache problems. Perform this procedure only if directed to do so by a Maintenance Analysis Procedure (MAP).

Attention: Data may be lost. When an auxiliary cache adapter connected to the RAID controller logs a 9055 URC in the error log, the Reclaim procedure does not result in lost sectors. Otherwise, the Reclaim procedure will result in lost sectors.

Complete the following steps to reclaim IOA cache storage:

  1. Run the iprconfig utility by typing iprconfig.
  2. Select Work with disk unit recovery.
  3. Select Reclaim IOA cache storage.
  4. Select the desired adapter, then press Enter. A screen display will then show the devices that might be affected.
  5. To reclaim IOA cache storage, type c to confirm. If you do not want to reclaim IOA cache storage, type q to cancel. A screen display similar to one of the following will then be displayed.
    +--------------------------------------------------------------------------------+ 
    |                                                                                | 
    |                         Reclaim IOA Cache Storage Results                      | 
    |                                                                                | 
    |IOA cache storage reclamation has completed.  The number of                     | 
    |lost sectors could not be determined.                                           | 
    |                                                                                | 
    |Press Enter to continue.                                                        | 
    |                                                                                | 
    |                                                                                | 
    |                                                                                | 
    |                                                                                | 
    |                                                                                | 
    |e=Exit   q=Cancel                                                               | 
    |                                                                                | 
    +--------------------------------------------------------------------------------+ 
    +--------------------------------------------------------------------------------+ 
    |             Reclaim IOA Cache Storage Results                                  | 
    |                                                                                | 
    |IOA cache storage reclamation has completed.  Use the number                    | 
    |of lost sectors to decide whether to restore data from the                      | 
    |most recent save media or to continue with possible data loss.                  | 
    |                                                                                | 
    |Number of lost sectors . . . . . . . . . . :     1572608                        | 
    |                                                                                | 
    |                                                                                | 
    |Press Enter to continue.                                                        | 
    |                                                                                | 
    |                                                                                | 
    |                                                                                | 
    |e=Exit   q=Cancel                                                               | 
    |                                                                                | 
    +--------------------------------------------------------------------------------+