支持SAS2的高速背板设计与仿真

design project and function realization of a kind of high- speed backplane for SAS2 signal expander is introduced in this paper. It presents structure and designing procedure of this system, emphasizes the composition of system hardware modules and the PCB designing, simulate the SAS2 signal about Singal Integrity on high-speed PCB and researches the selection for high speed backplane PCB material. The backplane can be used in high performance storage server and achevieve the interconnection between motherboard and SAS2 hardisks.