CA Dynam for VSE User Guide
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CA Dynam for VSE User Guide

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IBM 3494 Tape Library Interface<br />

IBM 3494 Tape Library Interface<br />

The <strong>CA</strong> <strong>Dynam</strong>/T interface with the IBM 3494/3495 family of tape libraries<br />

reduces operator intervention <strong>for</strong> mounting and dismounting cartridge<br />

volumes. You are no longer required to search <strong>for</strong> and mount a volume <strong>for</strong> an<br />

open request. This interface removes the need <strong>for</strong> a response to <strong>CA</strong> <strong>Dynam</strong>/T<br />

to mount a tape.<br />

<strong>CA</strong> <strong>Dynam</strong>/T communicates with the IBM Tape Library Dataserver using the<br />

IBM LBSERV macro interface. IBM supports communication with the Tape<br />

Library Dataserver on <strong>VSE</strong> natively using the <strong>VSE</strong> Library Control Device Driver<br />

(LCDD). LCDD is an IBM VTAM application which runs in a separate <strong>VSE</strong><br />

partition. Alternately if <strong>VSE</strong> is running as a guest under VM the <strong>VSE</strong> Guest<br />

Server (VGS) may be used by IBM to communicate with the Tape Library<br />

Dataserver.<br />

In order to activate the <strong>CA</strong> <strong>Dynam</strong>/T <strong>VSE</strong> LBSERV interface, when using either<br />

LCDD or VGS, MODON=11 must be set ON in the <strong>CA</strong> <strong>Dynam</strong>/T System option<br />

record. For more in<strong>for</strong>mation about how to setup either LCDD or VGS see the<br />

appropriate IBM documentation.<br />

Controlling Scratch Pools<br />

The 2-byte <strong>CA</strong> <strong>Dynam</strong>/T OWNERID is used to support the IBM Tape Library<br />

scratch poolid. If a dataset has a <strong>CA</strong> <strong>Dynam</strong>/T OWNERID of 00 through 31, the<br />

corresponding IBM scratch poolid (<strong>for</strong> example, SCRATCH00—SCRATCH31) is<br />

used to allocate a scratch tape <strong>for</strong> output processing. When an active tape<br />

with a <strong>CA</strong> <strong>Dynam</strong>/T OWNERID of 00 through 31 is scratched it is returned to<br />

the appropriate IBM Tape Library scratch pool.<br />

The IBM VGS service machine only supports scratch poolids SCRATCH00<br />

through SCRATCH15 there<strong>for</strong>e the only valid <strong>CA</strong> <strong>Dynam</strong>/T OWNERIDs are 00<br />

to 15 when using the VGS.<br />

MODON 22 must be set ON in the <strong>CA</strong> <strong>Dynam</strong>/T system option record when<br />

using the VGS so appropriate checks can be made concerning the limited<br />

support of scratch poolids.<br />

Using the <strong>CA</strong> DYNAM/T-VM Service Machine<br />

Communication to the IBM Tape Library Dataserver can also be done using <strong>CA</strong><br />

<strong>Dynam</strong>/T VM which communicates directly with the server.<br />

If <strong>CA</strong> <strong>Dynam</strong>/T VM is used as the communication tool to the robot, both<br />

MODON=11 and MODON=22 must be set to OFF in the <strong>CA</strong> <strong>Dynam</strong>/T system<br />

option record.<br />

3–52 <strong>User</strong> <strong>Guide</strong>

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