Transferring FSMO Roles New Domain Controlers

All,

At the moment I have 2 X 2008 DC at the moment, both non R2 standard vmware machines.
One of these DC currently holds all 5 roles.

I am planning to burn one of the current DC the one holding all 5 roles actually.
Planning on bringing in two new 2008R2 DC.

I have to put a plan together to remove the current main DC and bring a new DC in place of it and upgrade our forest and domain levels to 2008R2.
The reason I am posting here is in regards to the overall setup and particularly the infrastructure role.
I read that if your AD forest supports forest trusts the infrastructure role should be hosted on a non global catalog domain controller.
We do not currently support any trusts but we will have one established soon for a cross forest migration.

My plan is to bring on two domain controllers, both standard 2008R2.
make them both domain controllers, one of which will not be a global catalog server.
transfer all roles(barring the infrastructure role) to the new DC that is a GC.
transfer the infrastructure role to the new non global catalog domain controller.
update the forest and domain functional levels.

how does this sound?
LVL 9
Mark BillExchange, AD, SQL, VMware, HPE, 3PAR, FUD, Anti MS Tekhnet, Pro EE, #1Asked:
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Mike KlineCommented:
Make them all GCs that is the recommended best practice today.  More on that here

http://blogs.technet.com/b/askds/archive/2011/09/30/friday-mail-sack-super-slo-mo-edition.aspx#gc

Also if the recycle bin is enabled the IM role is no longer relevant (still a role but it doesn't do anything)

https://www.myotherpcisacloud.com/post/AD-Recycle-Bin-and-a-Eulogy-for-the-Infrastructure-Master

Thanks

Mike
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Windows Server 2008

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