About Exchange backups and Granular Recovery Technology (GRT)
When a backup uses Granular Recovery Technology (GRT), users can restore individual items directly from any full database backup. This type of backup can serve both kinds of recovery situations. From the same backup image you can restore entire databases. Or you can select individual folders or messages within a mailbox or public folder.
You can restore individual items using GRT from the following types of backups:
Full or user-directed backups
NetBackup lets you create a complete policy for disaster recovery, with all the various types of schedules. However, you cannot restore individual items from an incremental backup.
VMware backups that protect Exchange
Local snapshot backups
Off-host snapshot backups
Instant recovery backups, when the schedule copies the snapshot to a storage unit
Replica snapshot backups
This type of backup applies to a Database Availability Group (DAG).