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