1 Week Till Cut-Over
1 Day Till Cut-Over
Day of Migration
Day After Migration
The chart below can help you pick the best strategy for migration.
A single pass migration strategy that will move the entire mailbox in one pass after MX records are cut-over.
A typical scenario consists in cutting over on a Friday evening and migrating during the week end.
Simplest to implement
Users accessing the new system may not have access to all their data when work resumes
Any items created during or after the migration may be missed by a single pass
Downtime may occur for some users if migration fails or takes too long
This multi-pass migration strategy will move a majority of the mailbox data prior to the cut-over. A delta pass after the cut-over will migrate only the remaining mailbox items.
Perform cut-over only after confirming the majority of the data has been migrated
Customize the migration project with advanced multi-pass features
Perform continuous delta passes while email delivery is fully rerouted to the destination
Require advance planning
Non-email items are not available at cut-over time
This multi-pass migration strategy will allow you to accelerate a transition to your new system by moving recent data first and performing a delta migration after your MX records are cut-over.
Accelerate adoption of the new system by providing users with their most important data
Not all of the data is available at time of cut-over
A pass starts when you submit a mailbox for migration. Only successful, full passes count towards your pass limit.
When you move to a new home, you must notify the Post Office of your address change. When you migrate to a new email system, you must notify the internet by changing MX records with your DNS provider.
Use this checklist as a guide to help you with your migration.
Provision new mailboxes in the destination system
Create an administrative account in source system (optional and only if possible)
Create an administrative account in destination system (optional and only if possible)
Configure a mailbox connector
Associate all of your mailboxes to the mailbox connector created using our web interface or by importing a spreadsheet
Perform a free trial migration
Migrate the largest mailbox using MigrationWiz to perform a speed test (optional)
Calculate and size migration (optional)
Notify users that their mailboxes will be moving to a new system
Purchase migration licenses
Notify users that the migration is imminent
Verify mailbox access by submitting mailboxes for migration using the Verify Credentials mode
Perform initial migration pass (Pre-Stage and Quick Switch strategies only)
Notify users that the migration will occur tomorrow
Cut-over mail flow to new system
Wait for cut-over information to propagate
Initiate the migration (Big Bang strategy) or delta migration (Pre-Stage and Quick Switch strategies)
Perform a delta migration to pickup any residual mail (Pre-Stage and Quick Switch strategies only)
Notify users that the migration is complete
Assist users in configuration of the new client software
Check if any mailboxes have migration errors and perform the error resolution steps described with each error
Migrate failed items by submitting mailboxes for migration using the Retry Errors mode
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