Note in particular that optimum throughput is achieved with only 2–4 migration threads per Migrator for Notes to Exchange workstation (per Office 365 admin account), whereas the Estimated Throughput Rates table above assumes 8–12 threads per machine to a local Exchange target. Migrator for Notes to Exchange’s Account Pooling Utility will likely help you recover much of the throughput lost to throttling, but a more accurate prediction of net throughput in your own scenario will require local testing.
Keep these factors in mind as you estimate the scale and timing of an Office 365 migration.
The Set Task Schedule screen in some wizards lets you schedule a task to run on a particular workstation, or to run on any workstation. This workstation affinity option is offered for tasks created by:
Directory Export Wizard |
A phased migration is a variation of the more typical scenario, requiring some extra considerations and a few extra steps, as explained in the Phased Migration topic in chapter 1 of the Migrator for Notes to Exchange Scenarios Guide.
Coexistence is the state of two or more independent servers when both are serving the same organization at the same time—for example, when some users have already been migrated to a new server while others remain on the old server, awaiting migration. Coexistence introduces more complexity to a migration, and additional steps to the process. But for many organizations, some level of coexistence is essential for the continuity of critical business operations through the transition period of a migration.
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Directory Updates: Most migrating organizations experience staff additions, departures, transfers, and so forth during a transition period of at least several days, often weeks or even months. Any staff changes that occur while the migration is in process will introduce data inconsistencies between the source and destination servers, which you may need to reconcile during the transition. A directory update synchronizes the contents of one directory to match the contents of another. With Migrator for Notes to Exchange, a directory update is also used to help provision Active Directory with the objects in the Domino directory. |
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Email Routing and Remediation: Email coexistence requires mail routing throughout the transition period, when users will be distributed across multiple mail systems. Inbound Internet mail must be directed to the correct server mailbox, and all users must be able to send mail to one another across all active servers without having to know the migration status of other users. Forwarding rules must therefore be updated upon the migration of each user collection. |
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Calendar Free/Busy Lookups: Full use of calendar features requires free/busy lookups that will find current data regardless of the servers where the meeting attendees reside. This is accomplished by free/busy synchronizations and queries between the Notes and Exchange free/busy databases. |
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