I just been freak out

FLR very slow/not working
infrastructure is divided between five proxy server and one backup server.
logicaly we put our repository on the proxy server.
during FLR the technician told us that the entire backup file was decompressed on the backup server.
our backup files make multiple tera .......
more it has to copy it from the network.
until now network technician didn't hang me , but please tell me that is not true !!!!!!