Hello,
We are currently having 4 exchange servers with about 6000 mailboxes.
OS : Windows 2008 R2 SP1
Exchange 2010 SP3 RU13
Dell Migration Manager 8.12 is used to copy mailboxes to Office 365 Tenant.
When the copy job is attempted , users cannot work in their outlook sessions. Outlook sessions freezes .
Is there any way we can do the copy function during business hours or is it recomended to do this after business hours.
Checked the below article :
Users will not be able to use Microsoft Outlook to log on to their mailboxes while the Mail Source Agent is processing them within a Remote Users Collection. If a user is working online, Microsoft Outlook will not operate while the mailbox is being processed. After mailbox processing has been completed, a user must log off and log back on to the mailbox
Please advise on the issue.
If you want users to still access their mailbox during the migration you will need to change the way in which you migrate the mailboxes.
Because you're migrating to Office 365 you will need to use the Unified Mailbox Synchronization agent which does not copy the mailbox but synchronizes the mailbox.
Here is the documentation on setting up a collection to Office 365.
http://documents.software.dell.com/reference-materials-for-migration/8.13/migrating-to-microsoft-office-365/migration-to-microsoft-office-365/migrating-mailboxes/adding-a-new-office-365-mailbox-collection?ParentProduct=1377