HP Proliant Servers
View the family of industry standard hp proliant servers, storage, and accessories
http://h18004.www1.hp.com/products/servers/platforms/
IBM xSeries
Ibm system x, x86 servers for windows and linux, provide outstanding availability and price/performance capabilities that help better manage and provision your it environment.
http://www-03.ibm.com/systems/x/
SUN + AMD
The sun fire b100x blade server has been retired and is no longer orderable.
http://www.sun.com/servers/entry/b100x/
Unipress servers
Upservers for server storage storageserver
http://www.unipress-europe.nl/