For the latest installation information please refer to the R1Soft documentation linked below.

Installing the backup manager on Linux:
Backup Manager Installation Instructions - Linux

Installing the backup manager on Windows:
Backup Manager Installation Instructions - Windows

The backup manager should be installed on its own dedicated server, the above instructions are for the installation of the backup manager only. You will also need to install the backup agent on each server you want to backup. Please see the following article for those instructions: Backup Agent Installation Instructions