Discussion question atleast 600 words in APA format with no plagarism

Disaster Recovery Principles and Practices

by April J. Wells, Charlyne Walker, and Timothy Walker

Chapter 4 Prioritizing Systems and Functions for Recovery

© 2006 by Pearson Education, Inc. Chapter 4 Prioritizing Systems and Functions for Recovery 2

Chapter 4 Objectives

 Identify all assets and functions in the organization

 Prioritize disaster recovery efforts based on assets and functions

 Differentiate between tier 1, tier 2, and tier 3 recovery targets to prioritize systems that must be recovered in the event of a disaster

© 2006 by Pearson Education, Inc. Chapter 4 Prioritizing Systems and Functions for Recovery 3

Chapter 4 Objectives (cont.)

 Determine dependencies between different data, functions, and assets

 Distinguish between an inconvenient situation and a true disaster using disaster declaration threshold criteria

© 2006 by Pearson Education, Inc. Chapter 4 Prioritizing Systems and Functions for Recovery 4

Introduction

 DR involves restoring systems  This chapter discusses how to  Prioritize systems for recovery  Identify dependencies and interactions between

systems

© 2006 by Pearson Education, Inc. Chapter 4 Prioritizing Systems and Functions for Recovery 5

Identifying Critical Assets

 Hardware  Take inventory  Track

 Barcode readers  Database/spreadsheet software

© 2006 by Pearson Education, Inc. Chapter 4 Prioritizing Systems and Functions for Recovery 6

Identifying Critical Assets (cont.)

 Software  Take inventory

 Commercial  Customized  Proprietary  Free (often downloaded by users)

 Document  Where to access  How to recover

© 2006 by Pearson Education, Inc. Chapter 4 Prioritizing Systems and Functions for Recovery 7

Identifying Critical Assets (cont.)

 Data  Inventory

 Type of data  Systems data resides on  Interactions of systems

 Track  Challenging due to frequent additions  Utilize data architect if available

© 2006 by Pearson Education, Inc. Chapter 4 Prioritizing Systems and Functions for Recovery 8

Identifying Critical Assets (cont.)

 Human  Identify

 Employees – names, physical location, job responsibilities

 External contacts (vendors, external support, etc.) – contact information, purpose

 Track  Update information periodically

© 2006 by Pearson Education, Inc. Chapter 4 Prioritizing Systems and Functions for Recovery 9

Identifying Critical Assets (cont.)

 Other  These assets are specific to an industry or

specific business  Inventory and track as previously described

© 2006 by Pearson Education, Inc. Chapter 4 Prioritizing Systems and Functions for Recovery 10

Business Functions

 Business functions are actions related to a requirement of the business

 Examples  Displaying products for sale  Packaging products for delivery

© 2006 by Pearson Education, Inc. Chapter 4 Prioritizing Systems and Functions for Recovery 11

Business Processes

 Business processes use resources to complete a business function

 Examples  Developing business plans  Selling a product  Delivering a product

© 2006 by Pearson Education, Inc. Chapter 4 Prioritizing Systems and Functions for Recovery 12

Identifying Functions/Processes

 Identify all functions/processes  Analyze and rank in terms of criticality to

business  Critical, important, auxiliary rankings  Consider internal and external requirements

 Critical functions  Generate revenue or  Protect assets from loss (physical or reliability)

© 2006 by Pearson Education, Inc. Chapter 4 Prioritizing Systems and Functions for Recovery 13

Identifying Functions/Processes (cont.)  DR team needs members from many

departments to determine critical and secondary processes

 DR team identifies who is needed and where in a disaster recovery

© 2006 by Pearson Education, Inc. Chapter 4 Prioritizing Systems and Functions for Recovery 14

Prioritizing DR Planning Efforts

 Identify processes/functions that create assets  Those that support the organization generating

revenue or increasing its value  Example – the system used for a chain store to

send data to the home office that indicates what stock is needed

© 2006 by Pearson Education, Inc. Chapter 4 Prioritizing Systems and Functions for Recovery 15

Prioritizing DR Planning Efforts (cont.)  Identify processes/functions that protect

assets  Create secure or redundant system  Verify security/redundancy of data

© 2006 by Pearson Education, Inc. Chapter 4 Prioritizing Systems and Functions for Recovery 16

Determining What to Recover When

 Tier 1  Critical to continuation of business  Recovery needed within 72 hours

 Often needed within minutes or just a few hours

 Includes areas that generate/process revenue or that support the functions and processes that do so

 Includes backup and security

© 2006 by Pearson Education, Inc. Chapter 4 Prioritizing Systems and Functions for Recovery 17

Determining What to Recover When (cont.)  Tier 2  Important to continuation of business  Recovery in next incremental time period

 Could be next day or longer

 Consider timing of disaster  Processes that need to be accomplished at week-,

month-, or year-end may need to move up a tier if this is when disaster occurs

© 2006 by Pearson Education, Inc. Chapter 4 Prioritizing Systems and Functions for Recovery 18

Determining What to Recover When (cont.)  Tier 3  Nonessential  Recovery in days or weeks following disaster  Useful for organization, but not needed in short

run

© 2006 by Pearson Education, Inc. Chapter 4 Prioritizing Systems and Functions for Recovery 19

Conducting Dependency Analysis

 Identify relationship among systems  Use metadata if available  Consult programmers and developers

 Prioritize into tiers  Consult subject matter experts  Consult upper management for big picture info

© 2006 by Pearson Education, Inc. Chapter 4 Prioritizing Systems and Functions for Recovery 20

Disaster Declaration Criteria

 Critical functions/processes must be restored  Point at which to declare varies by each

organization  Other factors may influence  Internal – Can IT handle the problem?  External – Government mandates evacuation

© 2006 by Pearson Education, Inc. Chapter 4 Prioritizing Systems and Functions for Recovery 21

Summary

 It is necessary to identify and prioritize assets, functions, and processes for DR planning

 Prioritizing defines which are critical, and helps in determining when to declare a disaster

 Knowledge of how systems are interdependent is required for recovery