Please guide me what's best way to deploy vertias backup exec for VMWARE .
Can I install 2 instances of Backup Exec 1 on physical server and 1 within VM. if my VM environment have issues I can use Physical one to restore VM's . The virtual backup exec server will speed up the backup operation by using hot add features. do I make sense? what's the role of media server?
Refer following article for Backup Exec best practices.
Best practices for Backup Exec Agent for VMware.
Backup Exec installed on virtual machine works as good as physical machine. Depending on the need you can even go for CAS-MBES deployment.
Media server is nothing but a Backup Exec server which has different media\storages attached. E.g. Disk Storage, Tape Storage, Cloud Storage. Its always recommeneded that backups are duplicated to remote storages like tape, cloud so that in case of issues with local repository, backups can be restored from remote storages.