First Problem: The damed Controller has a propitary Cable Connector so i also had to order 452130-B21 Cable Kit from HP. First i tried to install with the internal CD Drive of the DL320.
But this crappy Thing didnt recognized the CDs. So i used a USB CD Drive. On my first Install Attempt the Installation hung while loading the cciss Drivers. After some research i found out that an extra Kernel Parameter is needed. When the Installation Disk promts for Parameters simply type in
esx noapicAnd the Installation will continue. This Parameter disables the Advanced Programmable Interrupt Controller.