z/VSE 5.2: Stacking tape support
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As promised here is the next new function of z/VSE 5.2: the stacking tape support - available on April 25, 2014.
The stacking tape support is based on z/VSE's virtual tape support. Below I will describe virtual tapes that reside on physical 3592 tape cartridges, called stacking tapes.
A stacking tape can be useful for the tape migration of older tapes, such as 3480 and 3490. It can help to exploit the large capacity of modern tape volumes, such as TS1140, may reduce cost and more.
We extended the VTAPE command to support stacking tapes (STACKTAPE). You may use the following sequence to write to a stacking tape:
The cuu provided in the STACKTAPE operand of the VTAPE command must
The stacking tape contains a directory for the virtual tape files on it.
VTAPE START with READ access reads the directory and positions to the requested file.
Stacking tapes have the following restrictions