Migrating to Exchange 2013

Hi All, I need some advice and or assistance,

My Client's current network infrastructure has got Small Business Server 2011 Standard installed when they started up with only a couple of Users, now the company has rapidly increased and are just under 65 admin users.

My question is, how do I create a migration plan to migrate them away from SBS 2011 Standard, all roles have already been moved to other servers(Hyper-V and physical)

How do I go to move the exchange from SBS to Exchange 2013 ? Any help would be appreciated.
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Jason CrawfordTransport NinjaCommented:

You'll need a minimum of two servers.  One for Active Directory and another for Exchange 2013.  You can't try to leave the SBS server in place to act as the Domain Controller because SBS doesn't support more than one DC, and the process of uninstalling Exchange from the SBS server you'd have to go through isn't supported either.

Good luck.
etienneschAuthor Commented:
Hi Keyser

Thanks for the reply, I already have 2 other DC's so it just by demoting this dc from the domain ?

is it advisable to create DAG between Exchange 2013 and sbs ? as far as I'm aware SBS doesnt support DAG ?

Any idea how to move the exchange ?
Jason CrawfordTransport NinjaCommented:
I've never been a fan of SBS for the sole reason that it conflicts with Microsoft best practice out of the box since it ships with Exchange installed on the same machine as the Domain Controller.  If you want to upgrade to Exchange 2013 with DAG level redundancy you have two options in my opinion.  There are others, but these two make the most sense to me:

Option 1

Migrate Active Directory to a new server with Windows Server Essentials.  Migrate all mailboxes to Exchange Online.

Option 2

Spin up three new servers (virtual or physical).  Designate one as a Domain Controller, and install Exchange 2013 on the other two.  Migrate AD to the new DC and migrate all mailboxes to the new Exchange 2013 servers in a DAG.  Use the Domain Controller as the File Share Witness.

You said your company is growing at a rapid rate so those would be the two options I would consider.  Definitely not the cheapest options, but they provide the scalability and redundancy a growing company needs.

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