How to Prepare and Recover CA Vtape › Virtual Volume Recovery › Recover from a Dynamic Cache LDS Failure

Recover from a Dynamic Cache LDS Failure

If a DASD volume containing a portion of the CA Vtape DASD buffer pool is lost, the LIST=CACHE Report shows the specific Virtual Volumes that have been impacted.

Note: For more information about the LIST=CACHE Report, see the chapter “Reports.”

Options are as follows:

• If the Virtual Volumes were Externalized, a valid copy can be Recalled from a Backstore tape.
• If the Virtual Volumes were not Externalized and the DASD volume cannot be recovered intact, the affected Virtual Volumes cannot be recovered and should be returned to scratch status in the Tape Management System.

Damaged or unavailable Dynamic Cache LDSs will get allocation errors during CA Vtape mount or Externalization processing. These LDSs will generate allocation errors until they are deleted or recovered.