If the number of free tapes goes below the planned minimum number, the MAREN administrator must either obtain new tapes for the computer center or release reserved tapes again that have reached the release date.
The following example indicates the procedure for tapes of the type TAPE-U5 of an archive system (the location AM001).
The MAREN administrator regularly checks the number of free tapes:
//show-free-volumes volume=*all,free-location=aml001,dev-type=tape-u5
If the number of free tapes goes below the planned minimum number, the MAREN administrator tries to release tapes:
//free-volumes volume=*all,init-file=aml001.init-file(init-location=aml001,user-id=sysoper1),home-location=aml001
This statement selects all tapes with the attribute INIT=*YES. Because a file is specified in the INIT-FILE operand, the affected tapes are assigned to a special user ID (SYSOPER1 in the example; the default is the user ID SYSMAREN) rather than being released. The tapes are released in the initialization run:
//initialize-volumes init-file=aml001.init-file(init-location=aml001,user-id=sysoper1),dev-type=tape-u5