CC is an optional parameter with which you can tailor concurrent copy backups. The parameters of CC are:

STANDARD

indicates that you want to use standard backup methods without using concurrent copy.

REQUIRED

ANYREQUIRED

indicates that you want to use concurrent copy as the backup method. Virtual concurrent copy is attempted first, if the storage subsystem on which the data set resides is capable of virtual concurrent copy and working-space data sets have been defined. Otherwise, cache-based concurrent copy is attempted if the storage subsystem is capable of it. If both types of concurrent copy are not possible or fail, the data set backup will fail.

PREFERRED

ANYPREFERRED

indicates that you want to use concurrent copy as the preferred backup method. Virtual concurrent copy is attempted first, if the storage subsystem on which the data set resides is capable of virtual concurrent copy and working-space data sets have been defined. Otherwise, cache-based concurrent copy is attempted if the storage subsystem is capable of it. If both types of concurrent copy are not possible or fail, the data set backup continues as if the CC parameter was not specified. PREFERRED is the default if CONCURRENT is specified without a parameter.

CACHEPREFERRED

CPREF

indicates that you want to use cache-based concurrent copy as the preferred backup method. If cache-based concurrent copy is not available, the data set backup continues as if the CC keyword was not specified.

VIRTUALPREFERRED

VPREF

indicates that you want to use virtual concurrent copy as the preferred backup method. If virtual concurrent copy is not available the data set backup continues as if the CC keyword was not specified.

CACHEREQUIRED

CREQ

indicates that you want to use cache-based concurrent copy as the backup method. The data set backup will fail if cache-based concurrent copy is not available.

VIRTUALREQUIRED

VREQ

indicates that you want to use virtual concurrent copy as the backup method. The data set backup will fail if virtual concurrent copy is not available.

PHYSICALEND

PE

indicates that you want control returned to the application only after the backup has physically completed.

LOGICALEND

LE

indicates that you want control returned to the application when the concurrent copy initialization has completed.