The Enterprise Media Manager (EMM) is a NetBackup service that manages the device and the media information for NetBackup. The Enterprise Media Manager stores its managed information in a database, and the database resides on the EMM host.

NetBackup is based on a static configuration of devices. These configurations are persistent for robotic libraries and tape drives in the NetBackup EMM database.

A NetBackup master server can have only one EMM server. However, an EMM server can manage device and media information for more than one NetBackup master server. An EMM domain comprises all of the master and the media servers for which it manages device and media information.

NetBackup configures the EMM server when you install NetBackup.

Usually, the EMM service runs on the master server host. However, you can install and run the EMM service on a NetBackup media server.