I see that many guys are interested in this subject. I've tryed to use veeam to backup a CUCM VM on UCS, with Cisco license on ESX 5.1, instead of using the esx embedded VM copy. The final issue, even with a VM shutdown, was that Veeam was providing an ESX license issue. As we were using the Cisco delivered license as usual, as Cisco integrator, we are supposing that Cisco was modifying the licensing content, and die prevent the use of expected services for the backup to work.
Our target in the lab was to check if with the supported method (VM shutdown and copy/export), Veeam could help to speed up the process.
It would be interested to know if Veeam could progress or talk with Cisco in order to have a common business to fullfill here. I'm suspecting Cisco to try to bring the UC customers to have the full UCS Datacenter design, with Nexus, Storage, and so on.