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Manager-of-Managers Environment
Centralized Media Management Database (CMMDB)
Chapter 8366
Centralized Media Management Database
(CMMDB)
The IDB is an embedded database that keeps information about backup,
restore, and media management sessions, devices, and media. It consists
of five parts that are located on the Cell Manager.
• MMDB - Media Management Database
• CDB - Catalog Database
• DCBF - Detail Catalog Binary Files
• SMBF - Session Messages Binary Files
• SIBF - Serverless Integrations Binary Files
In a typical cell-oriented environment, all parts are located on the Cell
Manager system and each keeps information on devices, media, and
backup information for that cell. For security reasons, it is impossible to
access and use this data from another Data Protector cell. Therefore,
media and devices used in that cell cannot be accessed and used in some
other cell without moving them to that cell.
In larger multi-cell environments with high-end backup devices, you
may want to share these devices and media among several cells. This can
be achieved by having one centralized MMDB database for all the cells
and keeping an individual CDB for each cell. This allows media and
device sharing while preserving the security capabilities of the multi-cell
structure.
With the CMMDB, media are owned by the Data Protector cell that
performed the first backup on the media. The media owner is displayed
in the media view. While media are protected, only backups from that
cell can be appended on the media. Therefore, media can only be owned
by one cell at a time. Once the protection expires, the media become
available to other cells again.