Linux and UNIX hosts must publish themselves to a Backup Exec media server before you can back them up. To establish communications, the Remote Agent installation program creates a configuration file named ralus.cfg on each Linux and UNIX host where the Remote Agent is installed. This file contains IP information that Linux and UNIX hosts use to publish themselves to a media server, where they appear in the Linux/UNIX Servers node in the backup selections tree.

A ralus.cfg configuration file also contains a list of Backup Exec media servers that you want to use to back up a particular Linux and UNIX host. Since multiple media servers can back up the same Linux and UNIX host, there is no limit to the number of media servers that can be listed in the ralus.cfg file.

Backup Exec media server entries in the ralus.cfg file are entered using either the media server name from a naming service provider such as DNS or NIS, or by using an IP address.