Specify Expiration Dates

To tell CA VM:Tape to keep 30 cycles of the primary data set on tape VOL001, enter the following:
```
vmtape mount vol001 181 cycle 30
```
To expire tape VOL002 90 days after it is last used, enter the following:
```
vmtape mount vol002 181 ldate 90
```
To keep tape VOL003 permanently, enter the following:
```
vmtape mount vol003 181 perm
```