You use VM commands to create tape drives, and to mount virtual tapes on these drives.
Once you define a tape drive and mount a virtual tape, any software that
you run thinks it is using a real device.
(This includes CMS, any application program, as well as jobs run
by MVS and DOS/VSE systems running under VM)
You can define virtual tape drives for a second-level VM system, where they appear as real devices.
Virtual tape is a great way to transfer data between heterogenous platforms like MVS, DOS/VSE and CMS users.
Virtual tapes can be shared and read by several users at the same time!
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