Design a Backup and Recovery Strategy for the following scenario

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Disaster Recovery Principles and Practices

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

Chapter 5 Identify Data Storage and Recovery Sites

© 2006 by Pearson Education, Inc. Chapter 5 Identify Data Storage and Recovery Sites 2

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© 2006 by Pearson Education, Inc. Chapter 5 Identify Data Storage and Recovery Sites 3

Chapter 5 Objectives

 Determine the best way or ways to back up data so that it can be recovered later

 Evaluate off-site storage options

 Acknowledge information as well as hardware and software as an asset

 Determine recovery site options

© 2006 by Pearson Education, Inc. Chapter 5 Identify Data Storage and Recovery Sites 4

Chapter 5 Objectives (cont.)

 Examine recovery site types

 Develop recovery site selection criteria

 Outline a recovery solution

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© 2006 by Pearson Education, Inc. Chapter 5 Identify Data Storage and Recovery Sites 5

Introduction

 This chapter discusses how to  Back up data

 Choose recovery sites

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Data Backup

 What media  To disk

 To tape

 To CD/DVD

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© 2006 by Pearson Education, Inc. Chapter 5 Identify Data Storage and Recovery Sites 7

Data Backup (cont.)

 When  When servers are least active

 Some systems may need to be shut down for accurate backup

© 2006 by Pearson Education, Inc. Chapter 5 Identify Data Storage and Recovery Sites 8

Data Backup (cont.)

 How often  According to company policy/regulations

 Consider  Recovery point objective

 Recovery time objective

 Maximum allowable downtime

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© 2006 by Pearson Education, Inc. Chapter 5 Identify Data Storage and Recovery Sites 9

Data Backup (cont.)

 Where  On site

 Easy and quick to restore

 Need to maintain security

 Disaster could also affect backups

 Off site  More expensive

 Owned or contracted

© 2006 by Pearson Education, Inc. Chapter 5 Identify Data Storage and Recovery Sites 10

Information as Asset

Include in backups:  Software programs  Licenses for software and software-hardware

combos  Metadata  Prioritize for order of recovery

 Critical  Vital  Sensitive  Noncritical

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© 2006 by Pearson Education, Inc. Chapter 5 Identify Data Storage and Recovery Sites 11

Recovery Site Alternatives

 Hot backup site  Stores real-time duplicate of data

 Warm backup site  Contains hardware used at primary site

 Backups taken to site to begin recovery

 Cold backup site  Leased space

 Must obtain/delivery physical and data resources to begin recovery

© 2006 by Pearson Education, Inc. Chapter 5 Identify Data Storage and Recovery Sites 12

Recovery Site Alternatives (cont.)

Advantage Disadvantage

Hot Minimal data loss Most expensive

Warm Reasonable recovery time

Still costly

Cold Minimal cost Longer recovery

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© 2006 by Pearson Education, Inc. Chapter 5 Identify Data Storage and Recovery Sites 13

Recovery Site Alternatives (cont.)

 Reciprocal agreements  Two or more companies join as partners in

disaster recovery

 Must be physically separated

 Good for businesses with limited DR budgets

 Two data centers  Used by smaller businesses concerned with cost

 Contains hardware and software resources

© 2006 by Pearson Education, Inc. Chapter 5 Identify Data Storage and Recovery Sites 14

Recovery Site Alternatives (cont.)

 Consortium arrangement  Similar to reciprocal agreement, but more formal

 Not typically used

 Vendor-supplied equipment  Vendors agree to supply if emergency declared

 More difficult if custom equipment used

 Combinations  Best solution may be a custom combination

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© 2006 by Pearson Education, Inc. Chapter 5 Identify Data Storage and Recovery Sites 15

Recovery Site Agreements

The written agreements should contain:

 Contract duration  Watch end date for renegotiation of contract

 Termination conditions  Conditions for and consequences of ending

agreement before expiration

 Permission to test DR plan

© 2006 by Pearson Education, Inc. Chapter 5 Identify Data Storage and Recovery Sites 16

Recovery Site Agreements (cont.)

 All costs

 Security measures required/provided

 Clause to allow systems changes

 Hours of availability to resources

 Specialized hardware requirements

 Personnel requirements

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© 2006 by Pearson Education, Inc. Chapter 5 Identify Data Storage and Recovery Sites 17

Recovery Site Agreements (cont.)

 Conditions constitution an emergency

 Contract renegotiation process

 Non-server related resource requirements

 Priorities  Availability of resources according to when

needed

 Other issues needed but not covered above

© 2006 by Pearson Education, Inc. Chapter 5 Identify Data Storage and Recovery Sites 18

Recovery Site Selection Criteria

 Number of sites available  Having choices a plus if disaster hits more than

one location

 Distance from primary site  Too close – disaster may also affect

 Too far – longer recovery time due to travel

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© 2006 by Pearson Education, Inc. Chapter 5 Identify Data Storage and Recovery Sites 19

Recovery Site Selection Criteria (cont.)  Facilities  Can office supplies be readily obtained?

 Located near restaurants, supermarkets?

 Close to hotels, motels, short-term housing?

 Easy access to postal services?

 What recreational facilities are available?

© 2006 by Pearson Education, Inc. Chapter 5 Identify Data Storage and Recovery Sites 20

Recovery Site Selection Criteria (cont.)  Cost  Site cost  Travel cost

 Actual cost – airline tickets, gasoline, etc.  Time cost – the employees’ (and recovery) time used to

reach the location

 Living costs during recovery  Cost of living varies by area

 Contract  What is included; additional costs

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© 2006 by Pearson Education, Inc. Chapter 5 Identify Data Storage and Recovery Sites 21

Design Recovery Solution

 Establish recovery site  Choose type of site

 Choose to build or rent/share a site

 Cost is a major factor in these decisions

© 2006 by Pearson Education, Inc. Chapter 5 Identify Data Storage and Recovery Sites 22

Design Recovery Solution (cont.)

 Select backup strategies for electronic media  Full – complete backup

 Incremental – changes since last backup

 Differential – changes since last full backup

 Mirror – complete backup; data not compressed

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© 2006 by Pearson Education, Inc. Chapter 5 Identify Data Storage and Recovery Sites 23

Design Recovery Solution (cont.)

 Select backup strategies for non-electronic media  Make copies and store

 Digitize and store electronically

© 2006 by Pearson Education, Inc. Chapter 5 Identify Data Storage and Recovery Sites 24

Design Recovery Solution (cont.)

 Select storage backup and recovery tools  A variety of data backup solutions are available

from vendors

 A company can also create its own

 SANs are widely used for storage

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© 2006 by Pearson Education, Inc. Chapter 5 Identify Data Storage and Recovery Sites 25

Design Recovery Solution (cont.)

 Consider current trends in recovery planning  Government regulations

 Terrorism  Includes indirect impact from others in chain being

affected

 24/7 access to data

 Access to email system

© 2006 by Pearson Education, Inc. Chapter 5 Identify Data Storage and Recovery Sites 26

Design Recovery Solution (cont.)

 Restore communications  Use BIA to prioritize user access restoration

 Restore/reroute voice, mail, and goods delivery  VOIP good method for rerouting voice communications

 Complete proper forms to reroute mail

 Create plan for rerouting/postponing delivery of goods

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© 2006 by Pearson Education, Inc. Chapter 5 Identify Data Storage and Recovery Sites 27

Design Recovery Solution (cont.)

 Eliminate single points of failure  Hardware or software

 Can be costly due to duplication of hardware/software

 User  Due to lack of training, fatigue, error

 IT department  Maintain diligence in security/antivirus upgrades

© 2006 by Pearson Education, Inc. Chapter 5 Identify Data Storage and Recovery Sites 28

Design Recovery Solution (cont.)

 Connect end users  Locate temporary space for users

 Determine connectivity  Consider IP addresses, firewall ports, dial-in access, etc.

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Summary

 You now have the background to evaluate data backup solutions and alternative recovery sites

 This information will help you in designing your recovery solutions