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Slide 1 - Disaster Recovery Planning CSH5 Chapter 59 Disaster Recovery Planning Michael Miora
Slide 2 - Topics Introduction Identifying Threats and Disaster Scenarios Developing Recovery Strategies Designing Recovery Tasks Implementation and Readiness
Slide 3 - Scope of DRP BIA* determines key functions Establishes sequence for recovery Builds economics of case for recovery DRP focuses on detailed recovery strategies Analyze and test critical path to recovery May begin while disaster in progress Establish essential services Continue through to normal operations *Business Impact Analysis – see CSH5 Ch 58
Slide 4 - Topics Introduction Identifying Threats and Disaster Scenarios Developing Recovery Strategies Designing Recovery Tasks Implementation and Readiness
Slide 5 - Threats Compile extensive list of threats to operations Rely on cooperation of emergency services Fire Police Flood district managers Compiling lists is useful in itself Define levels of impact Helps develop risk-mitigation plans
Slide 6 - Examples of Threats to Consider (from Ex. 59.1) Accidents Acts of G-d Aircraft accidents Alchohol abuse Area evacuation Arson Boiler explosion Bomb threat Brownout Bldg inaccessible . . . . . . . . Sabotage Sand storm Snow storm Strike Terrorism Tornado Utility failure Volcano Water damage Water supply failure
Slide 7 - Disaster Recovery Scenarios Apply survivable technologies to mission-critical functions E.g., eliminate single points of failure where practical E.g., invest in remote location for part of corporate data processing Escalation scenarios Establish timelines for increasing application of recovery measures Must plan carefully Avoid ambiguity in decision points
Slide 8 - Escalation Timelines Illustrates how DRP specifies decisions and actions Must identify who makes the decision Everyone has to know exactly who has authority to move to next phase Cannot argue about decision while disaster is in progress Must be practiced repeatedly (see later) Escalation Timeline
Slide 9 - Classifying the Damage . . . .
Slide 10 - Simplifying the Scenarios Use complete listing to identify major scenarios of concern Establish key scenarios; e.g., Systems only Partial building unusable Full building unusable Expect radically different DRPs for these types of disasters Everything depends on specifics of the situation – no boilerplates
Slide 11 - Categories of Functionality Category I Essential, mission-critical and time-sensitive Category II Essential, mission-critical but later in sequence Other Necessary but not immediately critical
Slide 12 - Topics Introduction Identifying Threats and Disaster Scenarios Developing Recovery Strategies Designing Recovery Tasks Implementation and Readiness
Slide 13 - Recovery Phases Expect to identify 3 basic phases Continuation of critical functions (Continuation) Recovery of critical functions (Recovery I) Recovery of other functions (Recovery II) See Figure 59.4 on next slide
Slide 14 - CSH5 Exhibit 59.4
Slide 15 - Continuation Begins immediately at time of disaster Support Category I functions as best as possible Respect time frames defined by BIA Consider possible alternate task assignments for people whose regular duties are impossible
Slide 16 - Recovery I Restore nearly full functionality to Category I functions Can start shortly after Continuation Phase has stabilized But usually starts quickly during Continuation Phase Minimize period of degraded functions for Category I Use overlapping recovery to degree possible
Slide 17 - Recovery II Continue recovery of lesser, later functions All of these timelines are planned Do not assume that you can play it by ear No time to debate and discuss critical path during recovery phases
Slide 18 - Range of Strategies for DRP
Slide 19 - Data Backup Scenarios “Data backup is a key function in all system installations. The best recovery strategy, chosen to meet recovery timelines according to the BIA, is useless without a backup from which to restore and resume operations. Data backup is perhaps the single most critical element of a disaster recovery plan, yet only 31 percent of U.S. companies have backup plans and equipment.” – Michael Miora, CSH5 59
Slide 20 - Topics Introduction Identifying Threats and Disaster Scenarios Developing Recovery Strategies Designing Recovery Tasks Implementation and Readiness
Slide 21 - The Overall Plan
Slide 22 - Beginning Sequence
Slide 23 - Middle Sequence
Slide 24 - End Sequence
Slide 25 - Topics Introduction Identifying Threats and Disaster Scenarios Developing Recovery Strategies Designing Recovery Tasks Implementation and Readiness
Slide 26 - Rehearsals Phased testing Bottom-up approach Limited tests in restricted areas Integrate tested procedures in larger aggregations Ideally, use separate test facilities Involve real users
Slide 27 - Intensive Record-Keeping Assign scribes who observe and take notes in rehearsals Have time-keepers with stop-watches to help scribes Use video-cameras where possible (use time-stamps) Useful for intensive analysis of errors Leads to rapid corrections and improvements
Slide 28 - Walk-Through or Post-Mortem for Rehearsals AND Real DRP Analyze cases with all concerned Not for assigning blame! Constructive discussions as teams Egoless work essential Everyone benefits from identifying problems Analyze causes, not just symptoms "St Jerome and the Angel" by Simon Vouet 1620s, National Gallery of Art, Washington
Slide 29 - Testing As plans mature, need increasingly real tests Schedule tests during off-time Involve people from all sectors Practice responses, decisions Invent unexpected scenarios to stress the plans MEASURE the results and analyze
Slide 30 - Live Tests Most difficult to arrange DO NOT TRY TO SURPRISE PEOPLE Can themselves result in disaster if not carefully planned Ideally, use sectional tests with unannounced times (but with advance notice of general plans) If possible, plan for simulated tests on weekends Should schedule at least one full test per year
Slide 31 - Training Film Ready for Anything (used in BCP) Commonwealth Films You can use this film for extra points (see later)
Slide 32 - Review Questions (1) Why is compiling lists of possible threats helpful in DRP? What is an escalation scenario in DRP? What are the required attributes of the escalation scenarios? How can one simplify an extensive list of possible disasters for the purpose of DRP? What are Miora’s three categories of functionality in DRP? What are Miora’s three phases of recovery in DRP? Why are reciprocal agreements so badly rated in the range of recovery strategies discussed in CSH4 Chapter 43?
Slide 33 - Review Questions (2) What are the characteristics of the ideal DRP strategy (one that may not be attainable in practice)? Which of the strategies for DRP rates the highest in attaining the ideal? Why is data backup such an essential component of DRP? Why are rehearsals such an important element of DRP? What are the essential ground rules of a walk-through in a DRP analysis of a rehearsal or test?
Slide 34 - DISCUSSION