Sun x2100 Server Compatability

[Vivek Khera]

Sorta off-topic:

Does anyone know about the rack rails for these systems (and/or the  
X4100)?  Sun claims "they only fit Sun racks" which seems idiotic to  
me (Dell used to claim the same but their rails always fit standard  
square-hole racks too).  The local Sun reseller doesn't seem to want  
to do any research for me or show me any samples.

Anyone who knows please let me know.  Thanks!