We have Linux on a couple of lpars. However we farmed that out to our BP.
We're using that for TSM (Tivoli Storage Manager).
IBM Developer Works - Linux
PowerLinux Community Wiki
IBM Redbooks - Linux
Lately I think our BP has gotten a pretty good grasp on how to spell Linux
but I'm not sure on much more than that. It's taking them months to
determine how to utilize the disks that I've already added to the system
using iprconfig (Suse linux version of SST).