
Managing Tape Devices
1-32 User Reference
Connectivity Systems, Inc.—Copyright © 2006
Use Pursuant to Company Instructions
completed, a mount message is sent to the operator. AVR puts the
partition in a wait state until the operator responds.
Autoattach Autoattach automatically attaches a tape drive to a Guest Virtual Machine
(VM), and then AVR assigns the tape drive to the partition.
Autoattach adds two new commands to VM:
VATTACH corresponds to the IBM ATTACH command.
VDETACH corresponds to the IBM DETACH command.
BIM-EPIC issues these commands during AVR to search for the desired
tape on a drive that VM owns. These commands differ from their IBM
counterparts in the following ways:
VDETACH detaches the tape drive without unloading the tape.
This leaves the tape accessible for another AVR search.
Both the VATTACH and VDETACH commands operate in silent
mode. That is, they do not issue messages.
If you are using zVM release 4.2 or higher, these commands are not
needed and, therefore, are not available.
Early Drive
Release
At close, BIM-EPIC releases the tape drive assignment with Early Drive
Release and if in a VM Autoattach environment, detaches the drive from
the guest machine.
Early Drive Release and Autoattach are automatic. However, they are
inhibited if you use alternate assignments.
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