I'm running VEEAM in the following environment:
Vmware Vsphere v5.1 cluster with two hosts = more than enough horse power, typically the cluster is at 10-15% load

VEEAM runs on a dedicated physical machine, connected via Gbit LAN
Backup proxies are both VMs, one of them is only used as a proxy, the other one is our Blackberry server with very low load.
All Backup jobs, apart from the Blackberry server, have guest file indexing activated
Typical processing rates are around 30MB/s, bottleneck is always the proxy.
The only exception is the Blackberry VM, which has a processing rate of 300 - 500 MB/s
When the backup runs, the backup proxy is at 100% CPU load - adding more cores doesn't change this.
Incremental backups are no problem, as they typically only take some 10 minutes... but if I need to create a full backup of the larger VMs, this would take 8-10 hours.
Is the difference between the Blackberry VM and the other ones only caused by guest file indexing or is there something else to be considered to speed things up?
Regards
Thomas