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Health Checks › VTAPE_PARM_FULL_MAXDRVS

VTAPE_PARM_FULL_MAXDRVS

Description

A CA Vtape complex Backstore Engine configuration can be defined with one Primary and multiple Failover Servers. The Primary Server is defined to process Externalization and Recall requests on behalf of all SVTn systems within the same CA Vtape complex. Each Failover Server is configured dormant and poised to take over the functions of the Primary Server in the event the Primary Server becomes non-responsive.

The definition of a Failover Backstore configuration requires that all SVTS subsystems within the CA Vtape Complex share the same Group Definitions (VTGROUP) and Externalization and Recall related attributes defined by the VTPARMS Dynamic Options. The related VTPARMS Dynamic Options are:

CacheAutoHoldLowThreshold CacheAutomationSchedule

CacheAutoReleaseHighThreshold CachewarningThreshold

FullMaxdrivesEnforcement* RecallNotificationEvent

RecallServer** RecallServerTimeout

* The attribute FullMaxdrivesEnforcement=Y is required.

** The attribute RecallServer=SERVER is required.

To define a Primary Backstore Server you define the following parameter library attributes:

To define a Failover Backstore Server you define the following parameter library attributes:

In summary, SVTn is not configured for Failover Backstore Server operation because the FullMaxdrivesEnforcement attribute specifies FullMaxdrivesEnforcement=N.

Best Practice

The Backstore Engine is not configured for Failover Backstore Server operation. If the current SVTn Backstore Engine configuration is intended then ignore this Health Check notification. Verify that the current Backstore Engine configuration is defined in accordance with the policies of the intended CA Vtape Complex.

Consider changing the Backstore Engine configuration for Failover Backstore policies which minimize tape usage and reduce the number of physical tape drive resources required by Backstore Externalization and Recall services.

Parameters Accepted

None

Debug Support

Yes

Verbose Support

Yes

Reference

For more information pertaining to Backstore Engine configurations, see the chapter "The Backstore Engine" in the Configuration Guide.

Messages

SVTH4201E

The VTPARMS Dynamic Options verification check has determined that SVTn is not configured to provide Failover Backstore Server services based on the specification of the FullMaxDrivesEnforcement parameter attribute.