first of all, thanks for the perfect reply, really nice
For my environment:
We have 3 Buildings in Düsseldorf, Germany (Headquarters)
Here we have 3 Backup Servers, for each building one backup Server.
Each Building has 2 serverrooms, so we backup the Servers from room 1 to room 2.
Repos are in every serverroom to backup the other server room.
Then we have 3 more offices.
One in Amsterdam, here we have one backup server and one Repository where this office is being backed up.
One in Palma and one in Leipzig. The setup is the same for every remote office.
So for now I'm working on one Building, then the next and so on.
I installed a Proxy on the 11th floor and have the backup server on the 6th floor, like this: (behold my paint-censor-skills) http://imgur.com/a/6a8RO
For the servers in 11th floor, I use the proxy on 11th floor to backup to the NAS in 6th floor.
Is this right, or should I use the backup server on the 6th floor to backup the 11th floor servers to the NAS in 6th floor?
(basically: Should the proxy/backup server be near to the Servers or the Repos)
For the 2nd and 3rd building in the Headquarters, I will remove the backup Servers and install 2 proxies instead(in every serverroom one), so I have one backup server which manages all the proxies.
Then I can think about removing the backup servers in the remote offices and install proxies there, so I can manage all the offices from one backup Server. Does that make sense or am I missing something here?
Should I keep the backup servers in the remote offices? They all backup like 3 VM's so I don't see the point of having a backup server there.
That would make one backup Server (headquarters) and 8 proxies (5 in Headquarters, one in Palma, one in Leipzig and one in Amsterdam).