125Disaster Recovery andBusiness Continuity of SCADA
BACKUP AND RECOVERY
Backup and recovery methods and strategies are a means to restore system operations
quickly and effectively following a service disruption. The methods and strategies
should address disruption impacts and allowable downtimes identied in the BIA and
should be integrated into the SCADA system architecture. Specic recovery methods
should be considered and may include commercial contracts with alternate site ven-
dors, reciprocal agreements with internal or external organizations, and service-level
agreements (SLAs) with equipment vendors. In addition, technologies such as redun-
dant arrays of independent disks (RAID), automatic failover, UPS, server clustering,
and mirrored ...