Reclaiming IOP cache storage

Use this procedure to reclaim IOP cache storage.

1. If you are not already using Dedicated Service Tools, perform an IPL to DST. If you cannot perform a type A or B IPL, perform a type D IPL from removable media.

   Did you get to DST with a Type D IPL?

   • No: Continue with the next step.
   • Yes: Perform the following:
     1. Select Work with disk units -> Reclaim IOP cache storage.
     2. Follow the on-line instructions to reclaim cache storage. The system will automatically perform an IPL to a Disk Configuration Attention Report or a Disk Configuration Warning Report display. Select the option to display the report. Because the Reclaim Cache Storage was selected after a D-IPL, the system will now require another Reclaim Cache Storage to be performed.
2. Select Work with disk units -> Work with disk unit recovery -> Reclaim IOP Cache Storage.
3. Follow the on-line instructions to reclaim cache storage. Depending on the reason for performing the Reclaim IOP Cache procedure, there may be a message requiring the ASP be cleared before performing this option, or a message stating the number of lost sectors.
   Note:
   If there are lost sectors, some objects may be damaged. The customer may have to load the damaged objects again.

When the IOP performs a Reset/Reload, if there is a storage IOA attached that is running the local load source, Cxxx xxxx codes will be displayed in the system control panel. The DST console may then have a blank screen with 01B displayed on the system control panel for up to 15 minutes before it is restored. This ends the procedure.