Joined: 14 Mar 2007 Posts: 8652 Location: Back in jolly old England
Please post your JCL to let us see what you have done .....
A virtual tape drive is exactly what it says on the packet - a virtual tape drive. It emulates a physical tape drive.
Data is written to a pseudo UCB which is routed to a DASD cache in the virtual tape subsystem, and when enough data is available to fill one physical tape volume the cached data is written to a physical tape volume, usually a high density one such as 3592.