Hi,
I need advice for migration on SBS 2011 to Office 365. My customer has a very low bandwidth and is growing fast actually. So I have around 40 users and around 100Go of data on Exchange. It's impossible to migrate the mailboxes over a weekend for example, because of the bandwidth. We would need around 2 or 3 weeks for the upload! Is cutover can still do the job for us? The user will still be connected to the SBS with outlook and mail received until their mailbox is completely upload to 365?
Do you have any other idea that I can use? Any advice?
Thanks
JC
Hello JC,
If bandwidth is going to be such a problem cutover is not a good idea. If you do a cutover mail will be migrated to O365 but once the mailbox has been migrated and DNS records still point to the SBS 2011 mail will be received by the SBS and not O365. A better solution for your situation is https://www.codetwo.com/office-365-migration/. That tool can do a delta after initial migration and migrate all mail that has not been migrated yet.
Another option would be a hybrid migration from the Exchange 2010 to Office 365 but requires you to install another DC that can run a Minimal Hybrid configuration that installs Azure AD Connect.
Do you think there is another solution?
I have seen that we can send PST and import directly.
What I could do is export all PST local, then take it to another place with fiber, and upload them. And block everything if needed a weekend. But then, do I have to create all the mailboxes on Office 365 manually. Do you think it's a good solution?
You can create O365 accounts from a list exported from your AD, see https://www.codetwo.com/admins-blog/export-users-from-active-directory/. Yes, importing pst files could be an option from a location with better bandwidth, see Use network upload to import your organization's PST files to Office 365 - Office 365