CA Vtape can support up to eight concurrent subsystems for each Logical Partition. Subsystems are named SVT1, SVT2, ….SVT8. They can be part of the same CA Vtape Complex and share the same Global VCAT, BSDS1, and network storage or be independent with their own control data sets and network storage.
As delivered, the SVTSCE JCL procedure will default to starting SVT1. To start a Subsystem with a different subsystem name, change the SVTS parameter in the SVTSCE JCL produced to SVT2 or SVT3, and so on. Subsystem SVT1 is not required to be running before you can start Subsystem SVT2 or SVT3.
The only requirement to run more than one Subsystem is to have different LOCAL VCATs and Virtual Drives.
The SVTS= parameter on the EXEC statement of the SVTSSE JCL procedure in the HLQ.CCUUPROC library determines which Subsystem is started. The SVTS= parameter on the EXEC statement of the RECYCLE and SVTSUTIL jobs determines which Subsystem the job communicates with.
When the subsystems are part of the same CA Vtape Complex, you will get the same results running SVTSUTIL batch commands pointing to SVT1 or any of the other subsystems. However, if a Subsystem must be active for the utility to run, you must be sure to point to one of the active Subsystems.
Commands and messages are prefixed with the Subsystem Name by default. If you type SVTS for a command prefix it defaults to SVT1 and SVT1 will execute and respond. If you need to communicate with SVT2, you must use it as the command prefix. The CA Vtape Subsystem processing the command will echo the command using the appropriate prefix.
The following are command and message examples:
SVTS D P SVT1X0100I Command Complete SVT8 D U SVT8X0100I Command Complete
|
Copyright © 2013 CA.
All rights reserved.
|
|