We have more than 250 servers running on the same vSphere platform and I don't see any performance issue on any server, neither our customers have reported any performance issues so far (during the time we had issues with Veeam server). We have 4 offsite jobs to a NAS box for one customer, I had disabled those jobs on Monday and since than the issue has not reoccurred. The port to which the NAS box is connected at customer end has been tapped with 10 Mbit (very slow) and hence the copy jobs actually never finishes sometime it hangs at merge and sometime other failures. I highlighted this to the support engineer as well however I was advice that it won't make any issues. In my case it has as after 4 days of monitoring the server has not hanged once. Could it be TCP Window size\scaling causing hang?