This is largely due to:
-rw-r--r-- 1 tools.toolserver-home-archive tools.toolserver-home-archive 55744484648 Jun 11 2014 archive-2014-06-05.tar.xz
which iiuc is a dump of the old Toolservers home directories. It doesn't seem to have been touched or recovered since then, and is now nearly 2 years stale.
Can this be removed or otherwise moved to some offline storage?