PureApplication 硬件架构大致如下:
https://www.ibm.com/developerworks/cloud/library/cl-ps-aim1302-hardwarepureapp/
另外产品本身的功能和使用场景等在官网有若干介绍:
http://www-01.ibm.com/software/applications/pureapplication/
Youtube上有不错的视频系列(自备梯子):
https://www.youtube.com/playlist?list=PLA508B797DAECDBDF