Maximum tolerable period of disruption (MTPOD) is the time following a disaster after which an organization’s viability will be irreversibly impacted if production isn't resumed.
A network disaster recovery plan is a procedure designed to prepare an organization to respond to an interruption of network services -- such as Internet access, wide or local area network operation and wireless networking functionality -- during a natural or manmade disaster.
A pandemic plan is a documented strategy for business continuity in the event of a widespread outbreak of a dangerous infectious disease.
Synchronous replication copies data over a SAN, LAN or WAN so multiple copies are available. The technique is used for applications with low recovery time objectives.