We have a company that has exchange 2010 setup and they want to migrate to exchange 2013.
Problem is the users frequently travel oversea from one country to another and their mailbox is also too big.
Some users mailbox are about 50GB.
I know you'll be suggesting me to archive mailbox/move mailboxes from 2010 server after setting up exchange 2013.
But due to the case I mentioned above,(traveling,mailbox big) management wants something that migration won't affect them.
I know I can setup DAG to get mailbox DB copy but it should be the same exchange 2010. Anything like DAG can be done between 2010 and 2013 ?
Or any other way to synchronize DB from 2010 to 2013 ? At least once the DB is copied, I can switch over or something, like Office 365 cutover migration can be done for hosted Exchange from 2010 to 2013 without using external third party migration tool ?