Move Large OST to O365 Container Manually RRS feed

  • Question

  • Hi, 

    We are about to begin migrating a large number of users to FSLogix O365 containers.  Some of the users have large OST files (30GB+) and we are concerned that the user experience during their first login will be poor (all they see is a blank screen for the duration of the file move).  Is there any way that an administrator can manually copy the users OST to prepopulare the users O365 container and avoid the lengthy operation during user login?



    Monday, July 22, 2019 11:03 AM

All replies

  • Hello,

    Certainly you can pre-create the VHD file with the proper permissions (users) and then mount the file and copy in the OST. But from experience, you should test this as Outlook/Exchange often call these moved OST files "out of date" and force a re-creation of the OST file anyway. So that would just double the download.



    Tuesday, July 23, 2019 11:46 PM