Data Protection: Ensuring Data Availability

423 Pages·2017·6.316 MB·English

by  Preston de Guise

Data Protection
Ensuring Data
Availability

Data Protection
Ensuring Data
Availability
Preston de Guise
CRC Press
Taylor & Francis Group
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Version Date: 20161123
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Dedication
For Daz

Contents
Preface....................................................................................................................xvii
Acknowledgments ...................................................................................................xix
Author .....................................................................................................................xxi
Chapter 1 Introduction ..........................................................................................1
1.1 T he Lay of the Land ..................................................................2
1.2 W hat Are You Doing Here? ......................................................2
1.3 W hat’s Changed in the Datacenter? ..........................................3
1.4 W hat Is Data Protection? ...........................................................4
1.5 K ey Challenges ..........................................................................5
1.5.1 Rise of Unstructured Data ............................................5
1.5.2 Big Data ........................................................................7
1.5.3 Cloud ............................................................................7
1.5.4 Virtualization ...............................................................8
1.5.5 The Law ........................................................................8
1.5.6 Crime ............................................................................9
1.6 A Brief History of Data Protection ...........................................9
1.7 T he Miserly Hoarder ...............................................................14
Chapter 2 Contextualizing Data Protection ........................................................17
2.1 I ntroduction .............................................................................17
2.2 D ata Classification ...................................................................18
2.2.1 What Is the Data? .......................................................19
2.2.2 Where Is the Data? .....................................................21
2.2.3 Who Uses the Data? ...................................................22
2.2.4 When Is the Data Used? .............................................22
2.2.5 How Is the Data Used? ...............................................23
2.3 P rotection Methodology ..........................................................24
2.4 P rotection versus Regeneration ...............................................24
2.5 O rganizational Change ............................................................25
2.6 S ummary .................................................................................26
Chapter 3 Data Life Cycle ...................................................................................27
3.1 I ntroduction .............................................................................27
3.2 A rchiving and Deleting ...........................................................29
3.3 S ummary .................................................................................37
vii
viii Contents
Chapter 4 Elements of a Protection System ........................................................39
4.1 Introduction .............................................................................39
4.2 People ......................................................................................39
4.2.1 Designers ....................................................................40
4.2.2 Operators ....................................................................40
4.2.3 End Users ...................................................................41
4.2.4 Data Protection Team .................................................42
4.3 Training ...................................................................................42
4.4 Documentation and Processes .................................................43
4.4.1 Design .........................................................................44
4.4.2 Implementation ...........................................................45
4.4.2.1 System Configuration Guide .......................45
4.4.2.2 System Map ................................................46
4.5 Testing .....................................................................................50
4.5.1 Type Testing ...............................................................50
4.5.2 Informal versus Formal ..............................................52
4.5.2.1 Test Procedure ............................................53
4.5.2.2 Test Register................................................53
4.5.2.3 Test Schedule ..............................................53
4.5.3 Performance Testing ...................................................54
4.5.4 Test Risks ...................................................................57
4.5.5 What Is a Test? ...........................................................58
4.6 Service Level Agreements .......................................................58
4.7 Technology ..............................................................................59
4.8 Summary .................................................................................60
Chapter 5 IT Governance and Data Protection ...................................................61
5.1 Introduction .............................................................................61
5.2 Architecture .............................................................................61
5.2.1 Integrity ......................................................................62
5.2.2 Reliability ...................................................................63
5.2.3 Recoverability ............................................................64
5.2.4 Data Protection Advocate ...........................................64
5.3 Service Transition ....................................................................66
5.4 Change Management ...............................................................69
5.5 Summary .................................................................................70
Chapter 6 Monitoring and Reporting ..................................................................71
6.1 Overview .................................................................................71
6.2 Monitoring ...............................................................................73
6.2.1 Health .........................................................................74
6.2.1.1 Drive Failures and Recovery Time .............74
6.2.1.2 Broader Uses of MTBF and MTTR ...........75
Contents ix
6.2.2 Capacity ......................................................................75
6.2.2.1 RAID/Data Storage ....................................75
6.2.2.2 Snapshots ....................................................77
6.2.2.3 Replication ..................................................77
6.2.2.4 Backup and Recovery .................................78
6.2.3 Performance ...............................................................80
6.3 Reporting .................................................................................80
6.3.1 Reporting as Monitoring Aggregation .......................80
6.3.2 Reporting for Trending and Predictive Planning .......81
6.3.3 Automated Reporting .................................................85
6.4 Monitoring and Reporting SLA Compliance ..........................85
6.5 Summary .................................................................................86
Chapter 7 Business Continuity ............................................................................87
7.1 Introduction .............................................................................87
7.2 Business versus IT Functions ..................................................87
7.3 Risk versus Cost ......................................................................88
7.4 Planning Data Protection Strategies and Service Level
Objectives ................................................................................90
7.5 Summary .................................................................................94
Chapter 8 Data Discovery ...................................................................................95
8.1 Introduction .............................................................................95
8.2 What Will Be Protected? .........................................................96
8.3 Shades of Data .........................................................................98
8.4 Indexing ...................................................................................99
8.5 Closing Remarks ...................................................................100
Chapter 9 Continuous Availability and Replication .........................................101
9.1 Introduction ...........................................................................101
9.1.1 What’s a Few Nines between Friends? .....................101
9.1.2 Data Protection and Availability ..............................103
9.2 Continuous Availability .........................................................104
9.2.1 Clustering .................................................................104
9.2.2 Continuous Availability as a Virtualization
Function ....................................................................105
9.2.3 Continuous Availability as a Storage Function ........107
9.2.4 A Combined Approach to Continuous Availability ....108
9.3 Replication .............................................................................109
9.3.1 Synchronous Replication ..........................................112
9.3.2 Asynchronous Replication .......................................113
9.4 Summary ...............................................................................116