I hope anyone can help me with this.
A customer of ours has asked us why there is a constant communication stream between the VSA/MA server and the vCenter server of about 100 kb/s. This communication stream is establisched during a backup of a VM by the vsbkp process and will close during the time the backup moves from one VM to the next.
For this customer this is an issue as the VSA/MA server and ESX hosts are on a remote site and the vCenter server is on the central site. The remote site only has a 2 Mbit connection and 100 kb/s is a lot of data for them on this connection.
As VADP backup stransports the data directly from the ESX hosts to the VSA proxy, why is constant communication needed from the VSA server to the vCenter and what does it contain?
This customer is using NBD as transport mode in case this makes a difference. Simpana environment is on v10 SP9.
I will test this in my test environment, but I just want to know if anyone knows. If I have any explanation, I will of course post it as well.