(the backup server is not the appropriate location for the proceedings. They should be relocated to somewhere that is itself backed up.)
IRIDIA has a proceedings repository that contains digital copies of proceedings.
To get access you need ask the password to the webserver's administrator.
Then login on iridia and
cd ~/public_html ls
Adding new proceedings
Let's say you want to add the directory /media/cdrom for the conference GECCO 2010.
scp -r /media/cdrom user@fallopius:/opt/proceedings/2010-gecco ssh user@fallopius /opt/proceedings/update_permissions