The Challenge Due to the 24/7 nature of business, the Zones clients referred to in this case study could incur no downtime or data loss during their email migrations. With more than a thousand mailboxes, migrating users would need to be conducted over the course of several weeks, with no loss in features or service during that time. The Solution Ideally, normal business operations should continue during an Exchange migration. So after a thorough investigation of the clients’ networks to prepare for the migration, Zones system engineers determined the best course of action was to design and deploy Exchange 2013 in parallel with the existing Exchange environment. This created two fully functional messaging platforms running side-by-side, making a phased migration of users possib

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