When the SnapManager MMC snap-in connects to a Database Availability Group (DAG), you get a consolidated view of all backups in the DAG. You can then select a backup copy to restore.
Backups are created on the server where the database is located. When the SnapManager MMC snap-in connects to a member server of the DAG, you can view backups specific to that server. For each database that is backed up, its backups are grouped under two headings: Local Backups and Archived Backups. Because the backup name includes the name of the Exchange server, it indicates where the backup is located.