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Disaster Recovery in
information technology is
the ability of an infrastructure
to restart operations after a
disaster. While many of
today's larger computer systems
contain built-in programs for
disaster recovery, standalone
recovery programs like
FirstDefense-ISR often
provide enhanced features.
Disaster Recovery is used both
in the context of data loss
prevention and
data recovery.
There are two primary metrics to
demonstrate recoverability
following failure:
Recovery Point Objective
(RPO) is the point in time
that the restarted
infrastructure will reflect.
Essentially, this is the
roll-back that will be
experienced as a result of
the recovery. Reducing RPO
requires increasing
synchronicity of
data replication.
Recovery Time Objective
(RTO) is the amount of time
that will pass before an
infrastructure is available.
Reducing RTO requires data
to be online and available
at a failover site.
When critical data loss occurs
without a preventive disaster
recovery policy in place
data recovery becomes the
only option.