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Contents
ABOUT THE AUTHORS XVII
EDITOR’S NOTE XIX
AUTHORS’ ACKNOWLEDGMENTS XIX
A WORD FROM GARY BLOOM XXII
THE IMPORTANCE OF ENTERPRISE RESILIENCY XXII
A WORD FROM GREG REYES XXIV
BUSINESS IMPERATIVE: THE NEED FOR CONTINUOUS DATA ACCESS XXIV
HISTORICAL PREFACE BY DAVID THIEL XXVII
VMSCLUSTERS: A HISTORICAL PERSPECTIVE ON DISASTER RECOVERY XXVII
• PART I: INFORMATION SERVICES, DISASTER AND RECOVERY 1
CHAPTER 1: A RESILIENT ENTERPRISE 1
THE NEW YORK BOARD OF TRADE 1
BUILDING A DISASTER RECOVERY PLAN FOR NYBOT 4
Y2K PREPARATION 8
SEPTEMBER 11, 2001 12
SUMMARY 19
CHAPTER 2: DISASTERS AND RECOVERY PLANS 21
DEFINING DISASTERS ACCORDING TO IMPACT 21
IMPACT ANALYSIS 23
CLASSIFYING DISASTERS 26
IMPACT MODIFIERS 30
PREPAREDNESS AND RECOVERY PLANS 31
CHAPTER 3: MANAGING DISASTERS 35
COMMUNICATING IN A CRISIS 35
EVENT MANAGEMENT 35
HOW THE EVENT MANAGEMENT PROCESS WORKS 38
BEST PRACTICES FOR DISASTER RECOVERY 40
EVENT MANAGEMENT TOOLS AND TECHNIQUES 48
CHAPTER 4 THE DISASTER RECOVERY SITE 56
SELECTING A RECOVERY SITE 56
DEFRAYING COST: OTHER USES FOR A RECOVERY SITE 61
RECOVERY SERVICE PROVIDERS 65
CHAPTER 5: THE HUMAN FACTOR 73
STAFFING, TRAINING, AND SUPPORTING A DISASTER RECOVERY TEAM 73
MANAGEMENT STRUCTURE 76
HOW DISASTERS AFFECT PEOPLE 78
GETTING PEOPLE BACK TO WORK 83
PEOPLE ARE THE MOST IMPORTANT ASSET 84
CHAPTER 6: TESTING A DISASTER RECOVERY PLAN 87
TESTING IS EVERYTHING 87
FOUR TYPES OF TESTS 87
PREPARING FOR A RECOVERY TEST 89
CONDUCTING RECOVERY TESTS 90
AFTER A RECOVERY TEST 91
• PART II: INFORMATION TECHNOLOGIES FOR DISASTER RECOVERY 93
CHAPTER 7: INFORMATION SERVICE AVAILABILITY 95
AVAILABILITY 95
HIGH AVAILABILITY 97
ACHIEVING HIGH AVAILABILITY IN COMPUTER SYSTEMS 102
COMPONENT FAILURES AND OUTAGES 106
THE OUTAGE TIMELINE 108
THE OUTAGE TIMELINE: EXAMPLES 116
THE AVAILABILITY INDEX 124
THE MYTH OF THE NINES 126
CHAPTER 8: BACKUP AND DISASTER RECOVERY 131
PROTECTING ENTERPRISE DATA 131
BACKUP: THE DATA PROTECTION FOUNDATION 132
COMPONENTS OF ENTERPRISE BACKUP ARCHITECTURE 136
ENTERPRISE BACKUP POLICIES 140
INCREMENTAL BACKUP 142
BACKING UP DATABASES 146
ARCHIVES 150
BACKUP MANAGER PERFORMANCE TACTICS 151
BACKUP MANAGER FEATURES 153
TECHNIQUES FOR MINIMIZING BACKUP WINDOWS 155
BACKUP BEST PRACTICES 156
A FINAL WORD ON BACKUP 161
CHAPTER 9: HSM AND DISASTER RECOVERY 163
REDUCING BACKUP AND RESTORE WINDOWS FOR FASTER DISASTER RECOVERY 163
HIERARCHICAL STORAGE MANAGEMENT 164
HOW HSM TECHNOLOGY WORKS 170
DISASTER RECOVERY WITH BACKUP AND HSM 176
DETERMINING THE IMPACT OF HSM ON A DATA CENTER 177
MAKING AN HSM DECISION 182
CHAPTER 10: OFFLINE DATA PROTECTION HARDWARE 183
REMOVABLE STORAGE MEDIA HANDLERS 183
AUTOMATED TAPE LIBRARIES 184
AUTOMATED TAPE LIBRARY FEATURES 185
CHOOSING THE RIGHT LIBRARY 186
CHAPTER 11: PROTECTING ONLINE DATA 189
PROTECTING ONLINE DATA 189
ONLINE DATA PROTECTION TECHNIQUES 192
DATA REPLICATION 192
DISASTERS AND ONLINE DATA PROTECTION 198
TECHNICAL REQUIREMENTS FOR REPLICATION 200
REPLICATION AND DATA CURRENCY 203
DATA REPLICATION IMPLEMENTATIONS 205
GETTING REPLICATION STARTED 209
SECTION STILL TO BE RELOCATED 210
SELECTING AN ONLINE DATA PROTECTION STRATEGY 211
SUMMARY 215
CHAPTER 12: STORAGE NETWORKS AND DISASTER RECOVERY 217
STORAGE NETWORKS: THE DATA ACCESS INFRASTRUCTURE 217
BLOCK DATA AND FILE ACCESS 222
FIBRE CHANNEL 223
DESIGNING A RESILIENT STORAGE NETWORK 228
SAN PERFORMANCE 236
ZONING AND SAN SECURITY 238
STORAGE NETWORK HETEROGENEITY 239
STORAGE NETWORK APPLICATIONS 242
WIDE AREA STORAGE NETWORKS 242
MANAGING STORAGE NETWORKS 245
DEVELOPMENTS IN STORAGE NETWORKING 245
STORAGE NETWORKING TIPS AND BEST PRACTICES 249
CHAPTER 13: PROTECTING DATA FILES AGAINST DISASTERS 253
THE NATURE OF FILE SYSTEMS 253
HOW FILE SYSTEMS FAIL AND RECOVER 260
ONLINE ADMINISTRATION FOR IMPROVED AVAILABILITY 264
CHAPTER SUMMARY 269
CHAPTER 14: PROTECTING DATABASES AGAINST DISASTERS 271
DATABASES 271
DATABASE DISASTERS 273
DATABASE RECOVERY 274
DATABASE BACKUP TECHNIQUES 280
RECOVERING DATABASES FROM BACKUPS 286
STORAGE REDUNDANCY AND DISASTER PROTECTION 288
SYSTEM REDUNDANCY AND DISASTER PROTECTION 289
DATABASE REPLICATION 294
SUMMARY: A DATABASE RECOVERABILITY HIERARCHY 298
CHAPTER 15: PROTECTING APPLICATIONS AGAINST DISASTERS 301
AVAILABLE APPLICATIONS AND AVAILABLE DATA 301
INCREASING APPLICATION AVAILABILITY 303
THREAT ASSESSMENTS 310
REMOTE FAILOVER CONSIDERATIONS 311
CHAPTER 16: RESILIENT ENTERPRISE NETWORKS 315
STORAGE AND MESSAGING NETWORKS 315
WIDE AREA COMMUNICATIONS 319
DWDM 325
WIDE AREA CONFIGURATION AND PERFORMANCE ISSUES 327
WIDE AREA COMMUNICATIONS EXAMPLES 336
DESIGN GUIDELINES FOR RESILIENT NETWORKS 338
• PART III: STUDIES IN INFORMATION SERVICE RESILIENCY 341
CHAPTER 17: CASE STUDIES 343
FLOOD AT A MAJOR REGIONAL HOSPITAL 343
FIRE AT A FINANCIAL FIRM 350
HURRICANE HITS A SMALL COMPANY 355
FLOOD AT A MEDICAL COLLEGE AND HOSPITAL 356
CHAPTER 18: ENTERPRISE RESILIENCY 369
ENTERPRISES, DISASTERS, AND RESILIENCY 369
RESILIENCY AND EFFICIENCY 372
PLANNING FOR ENTERPRISE RESILIENCY 374
ENTERPRISE RESILIENCY TECHNIQUES 379
BEYOND RECOVERY: ORGANIC ENTERPRISES 382
ENTERPRISE RESILIENCY THROUGH CELLULAR ORGANIZATION 386
TACTICS FOR ENTERPRISE RESILIENCY 391
CHAPTER 19: LOOKING AHEAD: THREE PERSPECTIVES 399
INFRASTRUCTURES FOR DISTRIBUTED INFORMATION SERVICES 401
INTRODUCTION 401
CONVERGENCE, EMERGENCE, AND MATURITY OF TECHNOLOGY 402
CONCLUSIONS 404
RETHINKING STORAGE ARCHITECTURES FOR DISASTER RECOVERY 405
SANS HELP TAKE THE WORRY OUT OF BUSINESS CONTINUANCE 412
A MORE FLEXIBLE STORAGE INFRASTRUCTURE 413
A STRATEGIC SOLUTION FOR IMPROVING BUSINESS CONTINUANCE 417
CHAPTER 20: RETHINKING STORAGE ARCHITECTURES FOR RESILIENCY 419
INTRODUCTION 419
BUSINESS REALITIES 420
TODAY’S ARCHITECTURES AND BELIEFS 421
EXPANSION AND GROWTH 423
THE COMPLEXITY CATASTROPHE 424
EVERYONE MAKES MISTAKES, ADMINISTRATORS ARE NO EXCEPTION 434
LAYERING AND VIRTUALIZATION 435
INVOKING SCALE FREE ARCHITECTURES TO MANAGE COMPLEXITY 436
EVOLVABLE STORAGE SYSTEMS 438
UNIVERSALIZING REPLICAS 439
TECHNOLOGY DISRUPTIONS 440
DEFINING “ULTRA-RESILIENCY” 444
A BOTTOM-UP VIEW OF DATA RESILIENCY 445
CURRENT DIRECTIONS IN UNIVERSITIES 447
INDUSTRY DIRECTIONS 450
CONCLUSIONS - MITIGATING THE COMPLEXITY CATASTROPHE 453
APPENDIX 1: BECOMING A CERTIFIED BUSINESS CONTINUITY PROFESSIONAL 455
THE DISASTER RECOVERY INSTITUTE INTERNATIONAL 455
APPENDIX 2: INFORMATION SERVICES DISASTER RECOVERY SOURCES 459
WEB SITES OF MAJOR ORGANIZATIONS SPECIALIZING IN DISASTER RECOVERY SERVICES 459
DISASTER RECOVERY ORGANIZATIONS 459
TRAINING 459
CONSULTING 459
DISASTER RECOVERY HOSTING 459
INFORMATION TECHNOLOGY PRODUCTS 460
APPENDIX 3: COST AND CAPACITY OF STORAGE MEDIA 465
STORAGE REQUIREMENTS FOR VARIOUS TYPES OF DIGITAL DATA 466
GLOSSARY OF TERMINOLOGY 471
INDEX 490