I'm trying to model blade centers in my setup. But I have problems making it work properly. I have defined my bladecenter as an enclosure which has the location set to the rack it is mounted in.

The problem is that the bladecenter's physical size is 10 U, but it has 16 positions for blades. If I set the size to 10 U to be able to place it correctly in the rack, then I only have 10 positions for placing servers. If I set the size to 16 to get enough slots, then the size in the rack is wrong.

How can I solve this?