Well, actually it very much possible to install Sun Oracle Solaris via the CIMC on the C200/C210 servers as long as one does not rely on the 'Virtual Media' function to mount a iso-file to install from. The installation just grinds to a halt when it tries to figure out where the CD-Rom is. From the look of it the installer finds the physical drive and tries to attach itself to that for the rest of the installation and just ignores the virtual one.
Now if I had known that before I left work as going there, to the data centre, just to insert a CD and go back home again seems like a lot of time for very little work (erhm... no, I'm not working from home again, am I?).