User Manual

Staged Migration

  • What is Staged migration?

    Staged Migration is migration technique which migrates all existing users’ mailboxes from on-premises Exchange to Exchange online.

    In staged migration, the mailbox migration can be performed in two stages if necessary. This type of migration is recommended for medium and large sized organizations. Because the data volume will be more and it can’t be migrated overnight or over weekends like staged migration. For organizations that operate 24/7 and can’t afford longer downtime in their operations, staged migration is an ideal solution. Basically, staged migration process is divided into two stages according to a particular date.

    The first stage is about migrating data which is either older or newer than a particular date. Then the domain is transferred to the destination server or the MX records are updated after the completion of migration. The second stage is about migrating the remaining data.

    The newest data is migrated first in the other cases during company off hours or over weekends and it follows the domain transfer or the MX record update. Users will have only newest data available when start working in new environment and in meantime the remaining data will be migrated.

    Who can perform Staged Migration?

    Staged Migration is suitable for medium sized organizations and this technique can be chosen only when you have your source email system in Exchange

    Staged Migration can be performed effortlessly using EdbMails Exchange Migration tool which doesn’t require any technical skills to successfully complete the migration task. It’s intuitive and simple user interface makes everything easy. You can migrate Exchange to Exchange of same domain or to different domain and also it performs on-premises Exchange to Hosted Exchange and to Office 365 migration.

  • How to perform staged migration

    Step-1. Download and install the EdbMails application.


    Step-2. Login using EdbMails account credentials.

    Demo login EdbMails

    Step-3. Select required migration technique from the menu.

    Exchange Migration

    Step-4. Connect to your source Server

    Follow one of the below links to connect source mailboxes
    Connect to source Exchange server
    Connect to source Office 365

    On successfull login you will be display with the list of mailboxes

    Step-5. Select the mailboxes you want to migrate

    Select the mailboxes for migration

    Select the mailboxes that you wish to migrate.
    Choose the migration type as 'Full migration' or 'Incremental migration'.

    Select Mailboxes

    Click the 'Migrate to Destination Exchange [Incremental]' button to continue.

    Export Selected Mailboxes

    Step-6. Migrating data which is newer than a particular date

    Click here to know how to set the date to migrate only the data after a particular date.

    Step-7. Connect to your destination Server.

    Follow one of the below links to connect destination mailboxes
    Connect to target Exchange server
    Connect to target Office 365

    On successfull login you will be display with the list of mailboxes

    Step-8. Map Source and Target mailboxes.

    Click here for the details to map source and target mailboxes.

    Step-9. Start the Migration operation.

    • During migration operation, user can view the progress and also can view the migration operation log using view log.

      migrate exchange progress

    Step-10. Update the MX records and do re-migration of the mailboxes.

    Update the MX records to your target server. You can do the next staged migration from the same computer and migrate the rest of the data on low peak time or in the weekends


    • Automatically re-connects on intermittent internet connection during the migration process.
    • Ensures safe migration of data as there is no intermediate third-party tool is involved in the migration process.
    • Users can perform batch migration/ Selective folder migration according to their migration requirement.