Its not recommended to install Backup Exec on a VM. Read the below forum thread.
https://www-secure.symantec.com/connect/forums/how-setup-tape-library-be-2014-server
I'm thinking about using a virtual machine, since our media server is getting old and we use a Data Domain appliance and DDBoost to do the backups anyway. That means that all of the storage is attached via 10Gb Ethernet anyway (though our Data Domain only has 1Gb), and most of the traffic goes between the backup target and the Data Domain or between our in-house Data Domain and hosted Data Domain, rather than through the media server. When major traffic does through the media server, it's because of server-side deduplication via DDBoost with SAN transport. I was actually wondering if there is a virtual appliance out there at this point (perhaps on Linux)? I guess not, since there are still discussions about supporting a virtual media server.
I really think the key is that if you have hardware that needs to be attached to a physical server, the supported configuration would be to use that physical server.
There is another limitation - SAN Transport (against the VMware backup API) is not supported when BE is within a VM - but you can use HotAdd instead.
