Install the Commvault software on a physical or virtual machine running Windows. The main component of the software is the CommServe system, which is used to manage all data protection operations.
You can install the MediaAgent on the same machine as the CommServe system or on a separate machine.
The Virtual Server Agent can be installed on one or more machines, so that those machines can serve as VSA proxies. A VSA proxy manages backup and restore operations for containers in your environment, eliminating the need to install agents on containers.
The Virtual Server Agent (VSA) must be installed on a 32-bit or 64-bit UNIX machine.