Making dump classes available for data set level recovery and volume recovery

When multiple dump copies have been created for a fast replication backup version, DFSMShsm needs to know which dump copy to use during recovery. You can specify this with the optional parameter FRRECOV(AVAILABLEFORMOUNT(YES|NO)) on the DEFINE DUMPCLASS command. The default value, FRRECOV(AVAILABLEFORMOUNT(YES)), indicates that dump copies created for the dump class are available for recovery and can be selected during FRRECOV processing. FRRECOV(AVAILABLEFORMOUNT(NO)) indicates that dump copies created for this dump class are not immediately available for recovery and the dump class name must be specifically specified on the FRRECOV command with the FROMDUMP(DUMPCLASS(dclass)) keyword to use this dump class. When multiple dump copies are created for a backup version and more than one of the dump classes have FRRECOV(AVAILABLEFORMOUNT(YES)) specified, the first dump copy found with YES specified is used. If FRRECOV(AVAILABLEFORMOUNT(NO)) has been specified for all of the dump classes, then the user must specify DUMPCLASS or DUMPVOLUME on the FRRECOV command, otherwise the command fails. The DUMPCLASS and DUMPVOLUME keywords of the FRRECOV command always take precedence over the DUMPCLASS FRRECOV setting.

This example shows how to use the FRRECOV(AVAILABLEFORMOUNT) keyword:

DEFINE DUMPCLASS(ONSITE FRRECOV(AVAILABLEFORMOUNT(YES))
DEFINE DUMPCLASS(OFFSITE FRRECOV(AVAILABLEFORMOUNT(NO))

In this example, dump class ONSITE represents a dump class whose copies are kept at the production site. Since these tape copies are immediately available for recovery, the dump class uses the option AVAILABLEFORMOUNT(YES). Dump class OFFSITE represents a dump class whose copies are stored offsite. This dump class specifies AVAILABLEFORMOUNT(NO) since the tapes are kept offsite and are not immediately available for recovery. When an FRRECOV command is processed, it automatically selects dump copies associated with dump class ONSITE. To use the dump copies associated with dump class OFFSITE, specify FROMDUMP(DUMPCLASS(OFFSITE)) on the FRRECOV command.

This FRRECOV dump class setting applies to FRRECOV tape processing at the data set and volume level.