Pure guess

Open machine (unscrew the case)...........move BIOS jumper (probably the one closest to the processor) power up.............then power down................then move the jumper back. Screw up the case and the BIOS password could be reset.

If it uses an eeprom chip you will have to use a paperclip?.............

I take the view that with servers, physical security is paramount

There is a big difference between stealing a laptop and stealing a server, so I consider your question to be genuine.

Good luck, and please let us know how you get on