CA 1 enables you to monitor scratch availability and tape usage and to send an email or issue a WTO when specific conditions are met. This functionality is delivered in the Volume Pool Monitor (VPM) feature. The VPM feature allows you to define volume pools and alerts. Volume pools are ranges of tapes that you define. Alerts are the rules that you define to monitor the status and use of tapes in the pools. You can also create alerts to monitor the processing that selected CA 1 daily utilities perform.
The VPM feature is implemented as a subtask of the CTS started task that you use for many different CA 1 functions. The CTS VPM subtask runs in real time to monitor alert conditions for volume pools. As the VPM subtask monitors tape activity, it categorizes tapes as being in Active, Scratch, or Out of Service status. A total volume count for the volume pool is maintained with a separate count of volumes in Never Used status. You can display these totals on the z/OS console or through the CTS ISPF interface or CA GMI.
The VPM feature uses a VSAM Database (VDB) to save volume pool and alert definitions. The feature uses also current and history counters for the volume pools. The VDB is updated through ISPF and also by the VPM subtask.
The following two scenarios demonstrate the real-time alert notification capabilities of CA 1.
Note: These scenarios assume that the one-time steps to create emails and configure the Volume Pool Monitor feature have been completed. For more information, see the Installation Guide.
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