by Colin Fraser.
Servers can be throttled. Anyone looked at the server?
Try this: https://msdn.microsoft.com/en-us/library/ee677221(v=azure.10).aspx. You using products from the Dark Side.
2GB is pretty big file and most network admins would thing "Ahh who would ever use a file that size?" but put the throttle in place as field that can be filled, irrespective of whether it is useful or not. Not that long ago we were marveling at having 40MB HDD, then it was 1GB, then 1TB. A throttle setting may have been set in the original install and not adjusted since without anyone realizing it. My understanding is that since about V2.5 or v2.6 the "experimental" backup routines became core, allowing 4GB backup filesizes. Server maybe.