HP NonStop G-Series - Manual (Page 111)

Tape Library Control Path Configuration Guidelines
DSM/Tape Catalog User’s Guide — 520233-008
7 - 3
Configuring the NonStop Server for the Tape Library
2. Specify the MEDIACOM ALTER MEDIADEFS command AUTOMATED ON option

If AUTOMATED OFF is specified and the first tape selected is not available in
the tape library, the operator receives a mount request.

If AUTOMATED ON is specified and the first tape selected is not available in
the tape library, $ZSVR automatically selects an alternate scratch tape for TMF
and DSM/TC catalog requests.
$ZSVR checks the tape library to see if the alternate tape volume is present. If
the alternate tape volume is not in the tape library, another tape volume is
selected. Up to ten attempts are made. On the tenth attempt, if the selected
tape volume is not in the tape library, the operator receives a mount request for
that tape volume. This mechanism is intended to handle a pool that includes
tapes both inside and outside of a tape library.
Configuring the NonStop Server for the Tape
Library
This subsection shows how to use MEDIACOM commands to configure your NonStop
server to work with a tape library. For more detailed information on MEDIACOM
commands, see the DSM/Tape Catalog Operator Interface (MEDIACOM) Manual.
At the TACL prompt:
20> MEDIACOM
The MEDIACOM prompt appears:
MEDIACOM - T6028G06 (01MAR2002)

Copyright (C) 2002, Compaq Computer Corporation

MC>
MEDIACOM has a HELP command that shows you the syntax for each command.
Determining the Current DSM/TC Defaults for Tape Library
Support
To show the level of support for DSM/TC and default values for tape library support, at
the MEDIACOM prompt:
MC>INFO MEDIADEFS
Support Level NOCATALOG

Automated OFF

Compression OFF

MC>
In this display, Support Level shows that DSM/TC is currently disabled. Because it is
disabled, the default information for DSM/TC does not appear.