If a mailbox is over quota a new one can be created automatically and any remaining data for this transformation is ingested into the new mailbox.
The new mailbox has a _1 suffix added, eg John.firstname.lastname@example.org. Additional rollovers for this container will be _2, _3 and so on.
A new button is added to the user interface so that an operator can perform this action:
This is an additional possibility in a migration. Previously an over quota shared mailbox could be converted to a normal mailbox, but that consumes an additional Microsoft license. By creating a new, shared mailbox additional licenses are not consumed. It is also shown to be faster ingesting into this type of mailbox compared with moving data from a primary mailbox to a secondary/personal archive mailbox.