rdist

rdist (remote file distribution utility) is a useful function much used in for example Solaris systems

In the SUSE-YAST repositories there is also an "rdist" but trying to download and install it one gets the error message:
"/media.1/not found on 'http://download.opensuse.org/distribution/11.0/repo/oss/' "
and rdist is not installed.

One would also need the daemon/dienst "rdistd" on the back-up server but "rdistd" is not found at all in the repositories!

Is this function supposed to be available on Suse-Linux?

11.0 is out of support!
As a quick'n'dirty workaround you can add
http://ftp5.gwdg.de/pub/linux/suse/opensuse/discontinued/distribution/11.0/repo/oss/
http://ftp5.gwdg.de/pub/linux/suse/opensuse/discontinued/distribution/11.0/repo/non-oss/
http://ftp5.gwdg.de/pub/linux/suse/opensuse/discontinued/update/11.0/
to your repo's list and install rdist afterwards.

rdistd is included in the rdist package.

BTW: for English spoken support you'd better visit http://forums.opensuse.org/
And if possible, you should upgrade your OS version (11.3 is current).