One of the less maintained machines in our data center is a small backup server.
It's basically sitting there, storing all those backups nobody really uses
and slowly fills up its disk array. Once in a while somebody checks it
manually to see if everything's in order (it has never been really connected
to anything sitting on its own isolated VLAN).
The server uses an Adaptec 5805 controller, a product line I tried debugging and
fixing a long time ago (see also http://lists.freebsd.org/pipermail/freebsd-bugs/2009-June/035612.html).
Unfortunately back then our supplier stated that
this is the only controller certified for this machine - so I gave in,
hoping that a pretty much bored backup server won't have too much trouble
keeping up with the little load it would get.
I was wrong.