What migration strategy does UserActivation leverage?
Delta migration solution:
UserActivation specializes in cutover migrations, where a company moves from one email system to Office 365 all at once by migrating email using a Delta Migration strategy, where older data is pre-staged, and then recent data is migrated after the DNS cutover.
The Delta Migration strategy consists of migrating most mailbox content early on; for example, email older than 30 days are migrated first. Migrating the majority of the data in advance provides a strong guarantee that all mailboxes can be accessed and migrated, and users can take a look at their new mailboxes and see that everything is being migrated well. When ready to switch to the new mailbox system, UserActivation will perform a quick Delta Migration to update Destination mailboxes with new content (without updating content that has already been migrated). Because the bulk of the data has already been migrated (e.g., all mail for the last three years), the Delta Migration usually completes very quickly. After the MX cutover, the last Delta pass will retrieve all remaining items created since the last pass.
UserActivation has been specifically designed for this scenario:
UserActivation migrates data in two phases:
- Pre-Staging. During the pre-stage phase, UserActivation will migrate all email older than 30 days. Contacts, calendars, tasks, journals, notes, and rules are not migrated at this time. We only migrate older email to ensure that the bulk of the mailbox data is staged in Office 365. Also, UserActivation does not provide an ongoing synchronization solution nor specialize in full mailbox coexistence (e.g., synchronize updated calendars and contacts, deleted or moved emails), therefore we wait until the MX records have been cut over in order to make sure that all calendars, contacts, tasks, journals, and notes are fully up to date when they are migrated.
- Delta Pass. Once the MX records have been cut over, UserActivation will automatically process a Delta Migration to migrate the new email and all contacts, calendars, tasks, journals, notes, and rules to Office 365. Since the bulk of the mailbox data has been migrated already, the Delta pass should process very quickly.