Are you using the z/VSE virtual tape support (VTAPE) ?
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Just a few words to our virtual tape support (VTAPE), if you are not yet aware of it.
z/VSE's virtual tape support provides the ability to read and write to a virtual tape in the same way as if it were a physical tape. The full range of the capabilities of a physical tape has not been implemented and there are some restrictions. However, the intention is to keep the virtual tape support transparent to applications. You may define VSE/VSAM virtual tapes or remote virtual tapes. For VSE/VSAM virtual tapes the tape image is stored in a VSE/VSAM ESDS file. Remote virtual tapes require a TCP/IP connection between z/VSE and a remote workstation. With the VTAPE command you can define the location of the virtual tape.
The virtual tape support consists of three functional components:
You may use virtual tapes to back up and restore data, transfer virtual tapes between workstations and z/VSE, back up data using the Tivoli Storage Manager (TSM), Fast Service Upgrade (FSU) from a virtual tape, and more.
Remark to my readers from the US: Enjoy your holiday.