Let's take a look at the Dell PowerEdge R510 today. This is a 2U rack mounted server that is compatible with the Intel Xeon 5500 and 5600 series of processors and a variety of operating systems including Microsoft Windows Server 2012, 2008, and 2008 R2 as well different versions of Linux. It is capable of running virtual machines using Hyper-V with Server 2008, Red Had Enterprise Virtualization and other VM managers. To go with the virtual machines, you can run up to 128GB of RAM.

It accepts the typical range of RAID controllers for this generation of Dell servers, including the SAS-6ir, PERC-6, H200 and H700. Depending on how many hard drives you use, you can also use a lower wattage power supply for reduced power consumption.