A mailbox backup includes only folders visible to users.Archive mailboxes ( In-Place Archive) cannot be backed up.To protect a large number of mailboxes, create several protection plans and schedule them to run at different times. Applying a protection plan to more than 500 mailboxes may cause backup performance degradation.Instead, the full path to a mailbox item is recreated in the target folder. Recovery of mailbox items does not overwrite anything. The recovered items are placed next to them.

When a mailbox is recovered to an existing Exchange Server mailbox, the existing items are kept intact. When a mailbox is recovered to an existing Microsoft 365 mailbox, the existing items with matching IDs are overwritten. Recovery can be performed to Microsoft 365 or to a live Exchange Server. The following items can be recovered from a mailbox backup: Also, you can keep a local copy of the Microsoft 365 mailboxes if it is required by a regulatory compliance. You can recover deleted items from a backup even after the Microsoft 365 retention period has expired.

Why back up Microsoft 365 mailboxes?Įven though Microsoft 365 is a cloud service, regular backups provide an additional layer of protection from user errors and intentional malicious actions. įor more information on the licensing options, see Acronis Cyber Backup for Microsoft 365 Licensing. If you are using a cloud deployment, refer to. This section is valid for on-premises deployments of Acronis Cyber Protect.

Acronis 365 backup