Checklist 23: Actions for a failed cache card

Use this checklist to recover storage after the cache card has failed.

This checklist should be used for the following problem situation:

Failed unit:
Cache storage in input/output processor (IOP)
Data loss:
Some

Most steps in the checklist include references to other topics in this document. Refer to these topics if you need more information about how to perform a particular step. You might not need to perform some steps, such as restoring changed objects, if they do not apply in your situation.

Table 1. Recovery checklist for failed cache card–Checklist 23
Task What to do Where to read more about it
Actions to be performed by the service representative
___ Task 1 Reclaim IOP cache storage.  
Actions to be performed by the user
___ Task 2 Evaluate the extent of the damage. It might be fastest to recover the entire ASP.

Choose from the following actions to identify damaged objects in critical files where you suspect damage:

  • Use the Copy File (CPYF) command.
  • Use the Display Object Description (DSPOBJD) command.
  • Perform a save of your critical data.

Choose from the following actions to identify damaged objects at the system level:

  • Use the Retrieve Disk Information (RTVDSKINF) command.
  • Use the Display Object Description (DSPOBJD) command and specify DSPOBJD OBJ(*ALL) OBJTYPE(*ALL).
  • Perform a full system save using GO SAVE option 21.
  • Run the Reclaim Storage (RCLSTG) procedure. Running the procedure is described in Reclaim Storage (RCLSTG) command.
  
___ Task 3 If you have decided to do a complete restore operation, use Table 1 to determine the correct procedure for recovering user information.  
___ Task 4 If you have decided to attempt to recover damaged objects, perform the tasks in Task 4: Recovering from damaged objects and unreadable sectors.