Here's a graph for 8/11/2014:
And here's a graph for 8/25/2014:
This compares a Monday before the upgrade to a Monday after the upgrade between 7am and 6pm. The graphs themselves look a little difference, which I don't understand, and the latency is not significantly reduced.
If Veeam ONE is getting the latency numbers from vCenter, are you at all familiar with how vCenter is coming up with these? Is it actively polling the drive at specific intervals and is it averaging in 0's for those times polled where the servers were idle?