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Dated: 12-11-2024

Ch02. what is Disaster Recovery (DR)

  • Any significant event that causes disruption of information technology processing facilities, thus affecting the operations of the business
  • DR is an area of security that allows an organization to maintain or quickly resume mission-critical (IT) functions following a disaster
  • What could cause the invocation of a DR failover to DR site?
    • Natural disasters such as flood, earthquake, lightning, storm
    • Disaster caused by human actions such as riot, fire, terrorist act, etc
  • What is the difference between DR and business continuity (BC)?
    • DR is an IT function, whereas business continuity addresses keeping all essential aspects of a business functioning despite disruptive events (DR is a part of BC)
  • Three step process:
    • Failover to the DR site (DR invocation)
    • Restoration of the services/facilities on primary site
    • Recovery (switchover back to primary site)
  • What is a DR plan?
    • A documented, structured approach to dealing with unplanned incidents
  • DR plan checklist:
    • Scope of the activity
    • Gathering relevant network infrastructure documents
    • Identifying the most serious threats and vulnerabilities, and the most critical assets
    • Identifying current DR strategies
    • Identifying emergency response team
    • Management review & approval of DR plan
    • Testing the plan (drill)
Post Assessment
A documented, structured approach to deal with unplanned incidents is called as
  • Thread Identification
  • Disaster Recovery Plan
  • Vulnerability Management
  • Risk Analysis
Which of the following is an area of security that allows an organization to maintain or quickly resume mission-critical (IT) functions following a disaster.
  • BC
  • DR
  • RPO
  • VM