Which free linux can I use on a Dell Power Edge Server 2650

Dear all,

I have recently joined the subscription program and want to install Netweaver. From my old company I could purchase a couple of Dell Power Edge Servers 2650 with 6GB RAM, Dual Core etc - so plenty of hardware. As next step I want to install a linux OS to be able to to install SAP trial version and/or the Netweaver software from the subscription program.

In the compatibility section I have read that I need either SUSE or RedHat linux enterprise edition. But these enterprise editions cost money when purchasing it. Is there also a free linux edition that I could use? If not, which enterprise linux would be the cheapest that I could use?

Thanks and best regards

Daniel Blaschkowski