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Note: In the following discussion, the numbers in parentheses refer to Control-M/Tape components in Figure 214 in Control-M/Tape Main Components.
The Control-M/Tape Real-Time environment (1) is activated when Control-M/Tape is started. The Real-Time environment is responsible for maintaining the integrity of data, and for recording rule specifications and other media management information in the Media Database.
Once the Real-Time environment is established, Control-M/Tape takes control of volumes processed in the system. Control-M/Tape performs extensive validity checks to ensure the data integrity of the media library at the site. In addition, stacking can be performed for nonspecific mount requests.
As a data set moves through the system, Control-M/Tape gathers relevant information, searches rules to determine the required actions, such as retention and vaulting information, and updates the Media Database.
The Control-M/Tape Real-Time environment is also responsible for the execution of rules containing user-defined instructions. Control-M/Tape rules are stored in Rule Definition libraries. Similarly, vault and pool specifications are stored in Vault and Pool Definition libraries. These libraries are standard partitioned data sets and users can define their own definition libraries (2).
When access to removable media is attempted, the Control-M/Tape Real-Time environment scans all rules and performs the appropriate rules.
Control-M/Tape utilities (3) facilitate production processing by handling maintenance, backup and archiving of the repository, and many other necessary functions.
The repository (4) is accessed by all Control-M/Tape components. Every action performed by Control-M/Tape is recorded in the repository. The repository contains the Media Database (5), Trace file (6), Stacking Database (called the Stacking Statistics file prior to version 5.1.4) (7) and IOA files (8). The repository can be scanned and updated using the IOA Online facility (9).
The Reporting facility (10) accesses the repository to produce various reports that are useful in an active data center.
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