The environment described in this architecture is one main datacenter containing 1000 VMS and 100 physical servers.  Each VM and physical server has an average of 200 GB of used storage space.  All backups will be targeted to a local primary backup repository and copied to a secondary offsite location. Proxies are installed on VMs and use the virtual appliance (hotadd) backup method. The backup target will be a server with an attached SAN array.