cameron,
Device location is only supported in iDRAC 7. In the iDRAC7 console, navigate to: "Overview->Server". Click Properties tab and then select "Details". Jump t:o: System Location.
Unfortunately OME is retrieving this data from MIB-II. I'll share that as a feature request w/ OME Dev. team to pull the location info.
Thanks,
Raj Shresta