Description: Before z/OS V2R1, the system used a default value of 2 for the VTOCCOPIES parameter of the DFSMShsm DEFINE DUMPCLASS command. Starting with z/OS V2R1, if the VTOCCOPIES parameter is not specified, the system uses a default value of 0 when DFSMShsm dumps copy pool volumes. The default value of 2 will continue to be used when DFSMShsm dumps non-copy pool volumes. If the VTOCCOPIES parameter is never specified, the LIST DUMPCLASS output displays a VTOCCOPIES value of *** to indicate that no value is specified. VTOC copies are not needed in a FRBACKUP/FRRECOV environment.
| Element or feature: | DFSMShsm |
| When change was introduced: | z/OS V2R1 |
| Applies to migration from: | z/OS V1R13 and z/OS V1R12. |
| Timing: | Before the first IPL of z/OS V2R1. |
| Is the migration action required? | Yes, if you want the old default value of VTOCCOPIES(2) in a FRBACKUP/FRRECOV environment. |
| Target system hardware requirements: | None. |
| Target system software requirements: | None. |
| Other system (coexistence or fallback) requirements: | None. |
| Restrictions: | None. |
| System impacts: | None. |
| Related IBM Health Checker for z/OS check: | None. |
Steps to take: If you want to keep the default value of VTOCCOPIES(2) used before z/OS V2R1 in a FRBACKUP/FRRECOV environment, specify VTOCCOPIES(2) on the DEFINE DUMPCLASS command for each dump class used to dump copy pool volumes.
Reference information: For details about the VTOCCOPIES parameter of the DEFINE DUMPCLASS command, see z/OS DFSMShsm Storage Administration