Determine Solaris server model inside a zone?

I'm a DBA doing some inventory and as part of it, I gather some system info. I'm wondering if it's possible to determine what hardware a zone is running on if you only have access to the zone? I think the answer is "no" because you can't run prtdiag. prtconf also is not available (to any usable extent). Most of what I need (number of cpus, amount of RAM, OS release, etc.) I can get, so this is a bit of icing on the cake to say "it's on an M5000" or whatever. Works fine from a true physical but I think the info is unavailable in a zone. Anything I missed? Thanks!