E-Book, Englisch, 410 Seiten
Schmidt High Availability and Disaster Recovery
1. Auflage 2006
ISBN: 978-3-540-34582-4
Verlag: Springer Berlin Heidelberg
Format: PDF
Kopierschutz: 1 - PDF Watermark
Concepts, Design, Implementation
E-Book, Englisch, 410 Seiten
ISBN: 978-3-540-34582-4
Verlag: Springer Berlin Heidelberg
Format: PDF
Kopierschutz: 1 - PDF Watermark
Companies and institutions depend more than ever on the availability of their Information Technology, and most mission critical business processes are IT-based. Business Continuity is the ability to do business under any circumstances and is an essential requirement faced by modern companies. Both concepts - High Availability and Disaster Recovery - are realized by redundant systems. This book presents requirements, concepts, and realizations of redundant systems on all abstraction levels, and all given examples refer to UNIX and Linux Systems.
Autoren/Hrsg.
Weitere Infos & Material
1;Preface;6
2;Contents;8
3;1 Introduction;12
3.1;1.1 Audience;13
3.2;1.2 Roadmap of This Book;15
3.3;1.3 Real-World Examples;19
4;2 Elementary Concepts;24
4.1;2.1 Business Issues;25
4.2;2.2 System and Outage Categorization;28
4.3;2.3 High Availability – Handling Minor Outages;33
4.4;2.4 Disaster Recovery – Handling Major Outages;37
4.5;2.5 Quantifying Availability: 99.9. . .% and Reality;40
4.6;2.6 Service Level Agreements;42
4.7;2.7 Basic Approach: Robustness and Redundancy;45
4.8;2.8 Layered Solution with Multiple Precautions;49
4.9;2.9 Summary;50
5;3 Architecture;52
5.1;3.1 Objectives;56
5.2;3.2 Conceptual Model;59
5.3;3.3 System Model;62
6;4 System Design;66
6.1;4.1 Base Concepts;66
6.2;4.2 Solution Roadmap;89
6.3;4.3 System Solution Patterns;97
7;5 Hardware;110
7.1;5.1 Components and Computer Systems;115
7.2;5.2 Disk Storage;119
7.3;5.3 Virtualization of Resources;137
7.4;5.4 Vendor Selection and Purchasing Decisions;139
7.5;5.5 System Installation;143
7.6;5.6 System Maintenance and Operations;150
7.7;5.7 Making Our Own Statistics;153
8;6 Operating Systems;160
8.1;6.1 Failover Clusters;162
8.2;6.2 Load-Balancing Clusters;187
8.3;6.3 Cluster and Server Consolidation;194
9;7 Databases and Middleware;200
9.1;7.1 Middleware Categories;202
9.2;7.2 Database Servers;204
9.3;7.3 Web Servers;216
9.4;7.4 Application Servers;219
9.5;7.5 Messaging Servers;224
10;8 Applications;226
10.1;8.1 Integration in a Cluster on the Operating System Level;228
10.2;8.2 High Availability Through Middleware;234
10.3;8.3 High Availability From Scratch;236
10.4;8.4 Code Quality Is Important;238
10.5;8.5 Testing for High Availability;240
11;9 Infrastructure;244
11.1;9.1 Network;245
11.2;9.2 Infrastructure Services;278
11.3;9.3 Backup and Restore;294
11.4;9.4 Monitoring;295
12;10 Disaster Recovery;298
12.1;10.1 Concepts;300
12.2;10.2 Approach;302
12.3;10.3 Conceptual Design;303
12.4;10.4 Solutions;316
12.5;10.5 Disaster-Recovery Tests;329
12.6;10.6 Holistic View – What Is Needed Besides Technology?;333
12.7;10.7 A Prototypical Disaster-Recovery Project;335
12.8;10.8 Failover to Disaster-Recovery Site or Disaster- Recovery Systems;362
13;A Reliability Calculations and Statistics;370
13.1;A.1 Mathematical Basics;371
13.2;A.2 Mean Time Between Failures and Annual Failure Rate;373
13.3;A.3 Redundancy and Probability of Failures;374
13.4;A.4 Raid Configurations;376
13.5;A.5 Example Calculations;383
13.6;A.6 Reliability over Time – the Bathtub Curve;385
14;B Data Centers;388
14.1;B.1 Room Installation;389
14.2;B.2 Heat and Fire Control;392
14.3;B.3 Power Control;395
14.4;B.4 Computer Setup;397
15;C Service Support Processes;398
15.1;C.1 Incident Management;399
15.2;C.2 Problem Management;400
15.3;C.3 Configuration Management;402
15.4;C.4 Change Management;405
15.5;C.5 Release Management;406
15.6;C.6 Information Gathering and Reporting;408
16;References;410
17;Index;412
