[Skunkworks] Dell PowerEgde Rack Server

I am looking for an ideal Dell PowerEdge Rack Server that is easy to setup with an internal RD1000 disk-backup drive and an additional of a minimum of 4 drive bays. I also need something slim (a max of 2U) and environment friendly (in terms of power consumption) but also because where I want to deploy it power is a luxury. 1 or 2 processors would be fine, must be Intel Xeon though. Any ideas. Regards.