Explanation/Reference:
Explanation:
Box 1: Create a recovery database.
A recovery database (RDB) is a special kind of mailbox database that allows you to mount and extract data from a restored mailbox database as part of a recovery operation. RDBs allow you to recover data from a backup or copy of a database without disrupting user access to current data.
Box 2: Restore the mailbox database.
After you create an RDB, you can restore a mailbox database into the RDB by using a backup application or by copying a database and its log files into the RDB folder structure.
Box 3: New-MailboxRestoreRequest with -Recovery
Use the New-MailboxRestoreRequest cmdlet to restore a mailbox or items from the recovery database to a production mailbox.
Note: A recovery database (RDB) is a special kind of mailbox database that allows you to mount and extract data from a restored mailbox database as part of a recovery operation. RDBs allow you to recover data from a backup or copy of a database without disrupting user access to current data.
After you create an RDB, you can restore a mailbox database into the RDB by using a backup application or by copying a database and its log files into the RDB folder structure. Then you can use the New- MailboxRestoreRequest cmdlet to extract data from the recovered database. Once extracted, the data can then be exported to a folder or merged into an existing mailbox.
References: https://technet.microsoft.com/en-us/library/ee332351(v=exchg.160).aspx#Use the Exchange Management Shell to recover data using a recovery database