XCOPY › Running XCOPY › Simulate Mode Considerations

Simulate Mode Considerations

By using the SET MODE=SIMULATE command in an XCOPY job, CA Disk instructs XCOPY to execute without actually mounting any ARCHVOLS or copying any DSNINDEX records. The result is a report indicating which DSNINDEX and ARCHVOL records would have been selected in a live run.

Because output devices are not allocated during simulations, CA Disk cannot accurately predict the number of output ARCHVOLS there will be in a live run. If you only want to know which DSNINDEX and/or ARCHVOL records will be selected for input by XCOPY, then this is not a concern. However, certain steps need to be taken if your intent is to determine the approximate number of ARCHVOLS that will be required for output.

XCOPY has a facility to simulate specific device types to predict volume capacity, and when a volume switch would occur. This is accomplished by specifying the appropriate DYNnUNIT/DYnnUNIT sysparm with the CA Disk value for the device type to be simulated as indicated below:

The MERP1TYP (MERC1TYP and/or MERT1TYP, if desired) sysparm should specify one of the following Media Option types:

The DYNnUNIT/DYnnUNIT sysparm, related to the previous Media Options, should be specified with one of the following cartridge device types:

Note: The simulated devices represented in this table will only work when sysparm CARTCALC is specified with a value of Y. If CARTCALC is set to N, all 3480/3490 devices use CARTFEET. For more information, see the sysparm descriptions of CARTCALC, CARTPRCT, and CARTFEET in the Systems Guide.

To specify a unit address using the DYNnUNIT or DYnnUNIT sysparm, it must be preceded by an EBCDIC slash(/).

For example, to direct the duplex copy of an XCOPY ARCHVOL to a 25 GB Redwood cartridge device, specify:

//SYSPARMS DD *
MERP1TYP3480
MERC1TYPDYN1
DYN1UNIT34991