HP B6960-90078 manual Configuring a Centralized Media Management Database, 368

IMPORTANT

Manager-of-Managers Environment

Configuring a Centralized Media Management Database

Configuring a Centralized Media Management Database

It is not required to set up a Centralized Media Management Database (CMMDB). If you do not set up a CMMDB, Data Protector will work in a multi-cell environment, but each cell will have its own IDB. See “Centralized Media Management Database (CMMDB)” on page 366 for more information on this functionality.

This section describes how to configure a Centralized Media Management Database for the whole multi-cell environment. If it is needed, this process will merge the local Media Management Database into the CMMDB. You can decide for each cell if it will use the CMMDB or its own local MMDB.

The CMMDB has a major effect on licensing. Immediately after the MMDB is changed from local to remote, all the licenses associated with libraries and devices are taken (validated) from the MoM Manager and can be removed from client cells.

When the CMMDB is used, it does not have to reside on the MoM Manager system. The CMMDB can reside on any Cell Manager in the MoM environment. The Cell Manager on which the CMMDB is located is specified in the file mmdb_server in the following directory:

•On Windows: <Data_Protector_home>\config\cell

•On UNIX: /etc/opt/omni/cell

Each medium with protected data on it has information showing which cell currently owns the data. Once this protection has expired, any cell can reuse the medium. If a tape has been initialized by one cell, any other cell can use it, as long as it does not have any protected data on it. If a tape is loaded in a library and not yet initialized, any cell can initialize it, assuming that there is a loose media allocation policy and no other tapes are available.

The media allocation rules apply in exactly the same way to shared tapes, except that appendable media can only be appended by the cell that owns it.

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