Hello,
The idea is to reduce day time traffic between wan slow links.
In my experience with SEP (since SAV8 so it's been a while) many improvments have been done but in terms of bandwidth use, it has been a lot more subtile.
The idea is to replicate (by a php / perl / python script for example) the content folder from SEPM to a very basic apache web server running on a linux box.
On the console in the same way you add a GUP, we could use this server as update provider. The script on this replicated could use crontab to launch or better, a remote ssh command from the sepm itself at fixed intervals (parameter) and, in case of security warning for exemple, on demand.
The best would probably be a replicated LUA under linux ;)
My idea might not be so simple to explain because my knowledge of SEPM mechanism is some kind of limited but i think it might be interessting to explore that update mechanism.
My idea came when we were facing the client version update. We manage to deploy it using an apache on a linux box (via the obtain package from section).
It worked like a charm and it appears that it could be a nice thing to use this very same server but for the virus def updates (well it appears to me that it would be nice) :)
I hope everything is understoodable (my french ideas are pretty clear but my english seems unclear sometimes ;)
Have a nice day !