8 Disaster Recovery, Business Continuity Plan and Management_ALG_02.10.2022 1

Disaster Recovery Planning

The process of resuming normal information processing operations after a major interruption.

Business Continuity Planning

The continuation of business by other means during the period when computer processing is unavailable or less than normal.

Business Continuity Management

A management system to protect against, reduce the likelihood of, and ensure recovery from disruptive incidents.

Risk Assessment and Mitigation

The process of defining credible risk events, assessing their effects, and developing strategies to mitigate risks.

Business Impact Analysis

An analysis of an information system’s requirements, functions, and interdependencies to characterize system contingency requirements and priorities during significant disruptions.

Maximum Tolerable Downtime (MTD)

The total amount of time a system owner is willing to accept for a mission/business process outage or disruption.

Recovery Time Objective (RTO)

The maximum amount of time that a system resource can remain unavailable before there is an unacceptable impact on other resources and processes.

Recovery Point Objective (RPO)

The point in time prior to a disruption to which mission/business process data can be recovered after an outage.

Business Recovery and Continuity Strategy

A comprehensive plan that includes emergency response, crisis management, and recovery plans for critical business processes.

Hot Site

A fully operational processing facility that is immediately available for use 24/7.

Cold Site

A shell facility with basic infrastructure that allows for the installation of new equipment.

Warm Site

A facility that is a compromise between a hot and cold site, with some resources available but requiring configuration.

Full Backup

A backup that captures all files on a disk or within a selected folder.

Incremental Backup

A backup that captures files created or changed since the last backup, regardless of type.

Differential Backup

A backup that stores files created or modified since the last full backup.

High Availability (HA)

A process that incorporates redundancy and failover to maximize system uptime and availability, aiming for 99.999% uptime.

Business Continuity Testing

Large-scale exercises of BCM programs and BC plans, including desk checks, tabletop exercises, and communication testing.