DSM/Tape Catalog User's Guide

DSM/Tape Catalog User’s Guide — 520233-008
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Tape Library Control Path
Configuration Guidelines
Applications request labeled tape volumes (physical tapes) using CLASS TAPE
DEFINEs or CLASS TAPECATALOG DEFINEs. If a requested tape volume physically
resides in a tape library, the NonStop Kernel tape server process ($ZSVR)
automatically sends a request to the tape library to mount the tape cartridge in a tape
drive. In most circumstances, no operator intervention is required.
All operational commands related to tape library control are entered through the
ACSLS library server (such as a Sun workstation) or Silo Media Manager (SMM).
The MEDIACOM operator interface is used to:

Initially map the physical location of a tape drive in a tape library using ACSLS to
the NonStop Kernel system tape drive name. $ZSVR then automatically starts a
Storage Server Interface process ($ZSSI) to communicate with the tape library as
needed.

Allows you to activate the automatic reselection of tapes for TMF and DSM/TC
scratch tape requests if the first tape volume chosen does not reside in the tape
library.

Provides support for the activation of compression mode when writing data to tape.
Note. This step does not apply to tape libraries using SMM.
Topic Page
Preparing the Software Environment 7-2
Configuring the NonStop Server for the Tape Library 7-3
Communicating With a Tape Library 7-6
Automatic Operation 7-7
TMF Tape Requests 7-11
Scratch Tapes 7-2
Automatic Operation 7-7
Entering Tape Cartridges Into a Tape Library 7-9
Removing Labeled Tapes From a Tape Library 7-10
Using Tapes in a Tape Library 7-11
Automatic Operation 7-7
Examples Using Tapes in the Tape Library (With Catalog) 7-13
Examples Using Tapes in the Tape Library (No Catalog) 7-14