Backup and archiving perform separate functions with different operational objectives:
archiving is for discovery, backup is for recovery, and many organizations and IT
departments 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
solution
enables regulatory 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 in time. An email
backup
enables recovery from a situation where data has been lost, corrupted or becomes
inaccessible, so it’s primarily a safeguard to facilitate data disaster recovery.