Currently we have two servers, one with SBS 2003 and a second server which is running Windows Server 2008 R2 with SQL 2008 R2. We getting new hardware, will have three servers, one with SBS 2011, second one with Server 2008R2 with SQL 2008 R2 but 64 bit and a third with Terminal server. Because we already have the license and cal's for the second server and the Terminal server I'm opting for SBS 2011 Standard rather than the Premium add-on.
From what I've read I don't need the Premium add-on to have these other two servers on my SBS 2011 network, configured as member servers on my SBS 2011 server. It would probably make sense to get the Premium add-on if we didn't already have existing licenses for the other two servers. Is that correct?