Mirgrating to Exchagne Server 2013 from Exchange 2010

Hi Team,
I am in the phase of migrating to Ex 2013 server from Ex 2010 SP3. I've few queries:
Can I use existing Ex2010 DAG to add Ex2013 Servers?
If no, then creating a new DAG means I need everything new, such as, storage, network... right?
Can I use 2010 witness in 2013 DAG and other way around?
What coexistence means if a new DAG is created.
and kindly sahre some reading resources about this topic.
Really appreciete your help.
Thanks.
Muhammad Nadeem Ahmed Sr System Support Engineer Premier Systems (Pvt) Ltd T. +9221-2429051 Ext-226 F. +9221-2428777 M. +92300-8262627 Web. www.premier.com.pk

Hi,
As DareDevil suggested, you need to setup everything on the new Exchange 2013 servers. After finishing the configuration on Exchange 2013, start to do the migration.
What's more, I would like to clarify the following thing:
When migrating a DAG from Exchange 2010 to Exchange 2013, you should first remove the mailbox server from the DAG in Exchange 2010 and then move mailboxes from database in this mailbox server to Exchange 2013. After all mailboxes have been migrated to the
Exchange 2013 mailbox server, when the new server is ready, it can become a member of the Exchange 2013 DAG.
For more information, here is a blog for your reference:
Migrating an Exchange 2010 DAG to Exchange 2013
http://windowsitpro.com/blog/migrating-exchange-2010-dag-exchange-2013
Note: Microsoft is providing this information as a convenience to you. The site is not controlled by Microsoft. Microsoft cannot make any representations regarding the quality, safety, or suitability of any information found there. Please make sure that
you completely understand the risk before retrieving any suggestions from the above link.
Hope it helps.
Best regards,
If you have feedback for TechNet Subscriber Support, contact
[email protected]
Amy Wang
TechNet Community Support

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