Design a Backup and Recovery Strategy for the following scenario
7/2/2016 1 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 Sites2 7/2/2016 2 © 2006 by Pearson Education, Inc. Chapter 5 Identify Data Storage and Recovery Sites3 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 Sites4 Chapter 5 Objectives (cont.) Examine recovery site types Develop recovery site selection criteria Outline a recovery solution 7/2/2016 3 © 2006 by Pearson Education, Inc. Chapter 5 Identify Data Storage and Recovery Sites5 Introduction This chapter discusses how to Back up data Choose recovery sites © 2006 by Pearson Education, Inc. Chapter 5 Identify Data Storage and Recovery Sites6 Data Backup What media To d i s k To tape To CD/DVD 7/2/2016 4 © 2006 by Pearson Education, Inc. Chapter 5 Identify Data Storage and Recovery Sites7 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 Sites8 Data Backup (cont.) How often According to company policy/regulations Consider Recovery point objective Recovery time objective Maximum allowable downtime 7/2/2016 5 © 2006 by Pearson Education, Inc. Chapter 5 Identify Data Storage and Recovery Sites9 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 Sites10 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 7/2/2016 6 © 2006 by Pearson Education, Inc. Chapter 5 Identify Data Storage and Recovery Sites11 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 Sites12 Recovery Site Alternatives (cont.) Advantage Disadvantage Hot Minimal data loss Most expensive Warm Reasonable recovery timeStill costly Cold Minimal cost Longer recovery 7/2/2016 7 © 2006 by Pearson Education, Inc. Chapter 5 Identify Data Storage and Recovery Sites13 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 Sites14 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 7/2/2016 8 © 2006 by Pearson Education, Inc. Chapter 5 Identify Data Storage and Recovery Sites15 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 Sites16 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 7/2/2016 9 © 2006 by Pearson Education, Inc. Chapter 5 Identify Data Storage and Recovery Sites17 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 Sites18 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 7/2/2016 10 © 2006 by Pearson Education, Inc. Chapter 5 Identify Data Storage and Recovery Sites19 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 Sites20 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 7/2/2016 11 © 2006 by Pearson Education, Inc. Chapter 5 Identify Data Storage and Recovery Sites21 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 Sites22 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 7/2/2016 12 © 2006 by Pearson Education, Inc. Chapter 5 Identify Data Storage and Recovery Sites23 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 Sites24 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 7/2/2016 13 © 2006 by Pearson Education, Inc. Chapter 5 Identify Data Storage and Recovery Sites25 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 Sites26 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 7/2/2016 14 © 2006 by Pearson Education, Inc. Chapter 5 Identify Data Storage and Recovery Sites27 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 Sites28 Design Recovery Solution (cont.) Connect end users Locate temporary space for users Determine connectivity Consider IP addresses, firewall ports, dial-in access, etc. 7/2/2016 15 © 2006 by Pearson Education, Inc. Chapter 5 Identify Data Storage and Recovery Sites29 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