I was how much memory is consumed during the backup? Lets say on a Windows 2012 server. We are running V11 sp11. Any thoughts appreciated.
are you talking about the memory consumption on the client?
Depending on whether this is the Client or MediaAgent, the best approach to understanding the utilization (i.e. CPU or Memory). You can enable perfmon capture during the time of the backup to collect performance metrics.
The following article is a good starting point if you are purely interested in OS level utilization - https://www.windowscentral.com/how-use-performance-monitor-windows-10
Hopefully that helps