Typically you would start the process by running the ServerView Installation Manager (SVIM), which is included on the ServerView DVD and features all required drivers. Alternatively, if you don't have installation media at hand, you can download the latest version here:
Here, the path is x86 Servers > PRIMERGY Servers > SELECT > PRIMERGY BX Blade Servers and so forth until you find a sub-entry named PRIMERGY BX900 S2 (or the ones for the matching server blades BX920/924). The manuals you'll find are the most recent versions, since there's no third-generation BX900 available -- at least not yet Wink .
If you need hands-on support, please contact your local service desk at