Managing Library Space
To build, distribute, install and back out change packages, ChangeMan ZMF allocates and accesses a number of data sets. There are administrative functions at the global and application level that provide you with the capability to enter and update information about how these data sets are named and allocated. ChangeMan ZMF provides modules that you can implement to help you manage library space more effectively. See the descriptions of exit programs SEREX001, CMNEX015, and CMNEXINS.
The staging libraries are always allocated as a PDS or a PDSE. Other libraries may be allocated using whatever storage method your site prefers. Currently there is only one backup for production libraries and it is stored as a PDS or PDSE.
Allocating Staging Libraries
Staging library allocation parameters are managed through the Global and Application Administration panels during setup. (See Setting Up Global Administration and Setting Up Application Administration.)
Allocating Baseline Libraries
ChangeMan ZMF baseline libraries may be pre-allocated outside of ChangeMan ZMF, or the application administrator may allocate PDS baselines through ChangeMan ZMF during application set-up. The following table describes the ways you can store the production and prior versions of components in baseline libraries.
| Storage Means | Number of Levels Stored | Comments |
|---|---|---|
| Full PDS | 2-10 | The production version of a component is stored in full PDS format. There is an additional PDS library for each prior version level. |
| Stacked Reverse Delta | 2-999 | The production version of a component is stored in full PDS format. Prior versions are stored in proprietary reverse delta deck format. All reverse delta decks are stacked in a single PDS library. |
| Librarian | 2-10 | The production version of a component is stored in a CA Librarian file. There is an additional CA Librarian file for each prior version level. |
| Librarian Archie | 2-255 | The production version of a component and all prior versions are stored in a single CA Librarian file. |
| CA Panvalet | 2-10 | The production version of a component and all prior versions are stored in a single CA Panvalet library. |
| Reverse Delta Deck PDS | 2-10 | The production version of a component is stored in full PDS format. Prior versions are stored in proprietary reverse delta deck format. There is an additional PDS library of reverse delta decks for each prior version level. NOTE This storage means is obsolete for new baseline libraries, but existing baselines with this storage means are supported. |
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Allocating Promotion Libraries
Promotion libraries must be allocated outside of ChangeMan ZMF administration. After the libraries are allocated, they are defined to ChangeMan ZMF while setting up Promotion (Configuring Promotion Sites, Levels, and Libraries.)
Allocating Production Libraries
See Using Baseline Libraries for Production Libraries for a discussion of baseline versus production libraries. If you decide to use production libraries, they are allocated outside of ChangeMan ZMF. The section Configuring Production Libraries explains how to define the libraries.