To verify that you’ve successfully enabled an archive for an existing mailbox, do one of the following:
• In the EAC, navigate to Recipients > Mailboxes, and then select the mailbox from the list. In the details pane, under In-Place Archive, confirm that it is set to Enabled. Click View details to view information such as archive status, usage, and quotas
• In the Shell, run the following command to display information about the new archive.