We are running Veeam B&R 9 Update 1, and we recently installed a new tape unit to copy the last active full of 40-50 Veeam backup jobs (~30TB) of EMC Isilon-based Veeam disk backups to tape.
After configuring the Veeam tape components and creating the Backup to Tape job we discovered the 1Gbps NIC on our Veeam B&R management server was becoming saturated when this job started and continuously while it ran.
After several weeks of working with Tier1 and Tier2 support, (Case # 01821983), it was determined that despite attempting to seemingly set a gateway manually in the Backup to Tape job, Veeam File to Tape and Backup to Tape jobs traffic their data through the Veeam B&R Server.
This is a tremendous bottleneck since our tape host and storage operate at a 10-20Gbps rate, and we didn't have a way (nor a need with our existing 40-50 Veeam disk-disk jobs which do allow proxy selection) to upgrade the B&R server to > 1Gbps connectivity.
As a result, and after Tier2 confirming there is no way to set a selectable proxy or gateway for tape jobs in our Veeam V9 Update 1 instance, we were forced to move our Veeam B&R server to the tape host as a workaround, which wasn't preferable.
Also, in a situation where branch offices over WAN connections would also have tape units all managed by a central Veeam B&R server, this would present an unworkable problem due to bandwidth constraints.
In a future version of Veeam, could you please allow a selectable proxy (-ies) or a gateway that will allow (as an option) tape jobs send traffic from source to destination, directed through the tape host or proxies instead of the Veeam B&R server?
Thank you for your time and consideration of what we consider to be a very necessary and valuable feature enhancement.