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Can both nodes of an openstack installation be the same physical server?

I am getting ready to install openstack for the first time on a Dell PowerEdge R610 with (2) hex core E5670 processors, 128GB memory, (6) 1TB SATA dreves arranged in RAID 10.

Can this single server serve as both the controller an compute nodes? Or is this not a good idea and should purchase another physical server?

I will be using Linux Ubuntu 16.04.