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After some advise. Requirements are Domain server, RDS Server, SQL Server.  I have an old server I was running all on before with VM's.  I  am buying 2 new servers right now. Undecided should I use all three servers?? Was going to use the older one for AD. And the two others for SQL and RDS. Suggestions? ?? Is this the way go???
pulsarman605Asked:
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Mohammed KhawajaManager - Infrastructure:  Information TechnologyCommented:
My recommendation would be as follows:

1.  Use older server for DC
2.  Virtualize servers and on one of them install a second DC
3.  Virtualize SQL and RDS using Hyper-V or VMware as this can give you the option of running all services even if one of the virtualized servers is down (assuming you can restart the VM on a different server).  I suggest you look at shared storage for the storage in order to fully utilize virtualization

Virtualization also enables you to fully utilize your hardware to its fullest potential as the servers could be used for future services.
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Cliff GaliherCommented:
If the old server is out of warranty and if all of these workloads are important (and most people think AD is important) then I'd let the old server go. 2012 and 2012 R2 have editions that give good virtualization right so you can easily run all three workloads on two physical servers and still keep total workload isolation using VMs. That is what I'd recommend...without more details to change my mind.
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pulsarman605Author Commented:
Thanks guys..... I have had so many varying reports about virtualising SQL and Domain controllers, that is why I was going to use three server.

So best option is maybe first server with RDS physical and domain controller in Virtual.  Second server just for SQL????
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Cliff GaliherCommented:
If you are going to virtualize, then run everything virtual.

So no, not RDS physical and DC virtual.

Physical OS is *just* for virtualization. Can be ESX or windows with hyper-V or another platform.

Then RDS as one VM and a DC as another VM. But don't mod other roles on the physical OA if it is handling virtualization duties.
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pulsarman605Author Commented:
Ok thanks for the advice cliff.
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Windows Server 2012

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