Tuesday, January 13, 2015

Good News on Mailbox Moves to Office 365 !!!

Microsoft team recently made a remarkable update to Exchange Online service as a part of December 2014 updatewhich now removes the Maximum item size limit restriction of 25 MB on Mailbox moves to Office 365 and increased the limit to 150 MB which eventually reduced the amount of migration overhead on calculating large item size on user mailboxes and work separately to address this as an add-on task during migration.

Below is the extract from the Official Announcement,

Office 365 Exchange Online message size onboarding limit increase — We are making a change to allow customers to migrate larger mail messages to Exchange Online. We now allow messages up to 150MB to be migrated to the service. The change is available immediately to all customers and is published as a new limit in the Exchange Online limits page in the Office 365 service description. We are not changing other limits such as mailbox size or maximum send/receive limit for messages. This change enables customers with large messages to easily migrate their existing content to the message.

This enhancement is quite significant as this reduces add-on work during the migration as most users will fall under this 150 MB category and there may be few exceptions still which is inevitable which we need to address as before. This new update will for sure increase the adoption rate and also speeds up the migration timeline.

Exchange Online Limits TechNet Page is updated to reflect this new change.

Note: This new limit applies only for native MRS-based moves and not for EWS, MAPI and IMAP and 3rd party Tools.

Additionally, we still need to consider the bandwidth consumption factor during such moves and its always advisable to educate users on Mailbox clean-up process as a best practice to have their mailbox size limit under control which eventually benefits both the end user in terms of better performance and also for Admins during the migration activities.

Hope this New year is filled with lot of new surprises from Microsoft and I am eager to experience and share the same with you.... stay tuned...

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