Migrating from more than 2 days and seems like there is some issue as the total size is 16 GB

Question

Hello 

 

Please i need your help on this issue. 

We did migration but we are having error.

We had a user who We have scheduled this migration.

The user is using .onmicrosoft.com account. Its been migrating from more than 2 days and seems like there is some issue as the total size is 16 GB on Source end.

 

However the attached results and snip shown below says:

257 GB how come.? Total mailbox size on source is 16 GB then how is it possible 257 GB. Seems like there is some discrepancy between these storage numbers.

I would like to know why it is taking so long to be migrated 16 GB storage.?

 

Answer 1

This problem of migration delay could be due to several factors – network issue or high server load. To resolve this, you can check the network connectivity and server performance.

If the mailbox size is showing 257 GB, it might be possible that it includes hidden or system files or backup data, which users can’t see.

Answer 2

Hi，@Iniobong Nkanga

Thanks for posting your question in the Microsoft Q&A forum.

When migrating mailboxes, there are differences in mailbox storage size, which can be caused by a number of reasons:

1.Sometimes, mailboxes contain hidden items or multiple versions of items that aren't immediately visible in the source mailbox but get counted during the migration.

2.Mailboxes often have Deleted Items and Recoverable Items folders that might not be considered in the initial size calculation. Ensure these folders have been accounted for or cleared out if they are not needed.

Please check the actual capacity of your mailbox first. If the actual capacity of your mailbox is really 257 GB, the specific migration time is related to your network quality.