20TB less than the size of a notebook?
I'm not calling outright fibs here but we're talking 10 2TB sata's here or what?
I'd take maybe a 1U with SFF's, but then again I've not seen how big your laptop is ;)
edit: yep, ok, I missed the words 'server' and 'cross section' there and thought you were talking about some magic home setup...... apologies and: doh!