Backup and archiving perform separate functions with different operational objectives: archiving is for
discovery, backup is for recovery, and many organizations use both services for increased protection and
flexibility.
Archiving preserves a single copy in secure immutable storage for a predefined time period and provides
ongoing access to historical business information. An email archiving solutione enables compliance with
legal and business data retention policies, as well as supporting eDiscovery.
Backup stores multiple copies that are each associated with a specific revision of data, and it provides
recovery back to a known good state at a specific point of time. A backup enables recovery from a
situation where data has been lost, corrupted or becomes inaccessible, so it's primarily a safeguard to
facilitate data recovery.