Book Image

Microsoft SQL Server 2008 High Availability

By : Hemantgiri S. Goswami
Book Image

Microsoft SQL Server 2008 High Availability

By: Hemantgiri S. Goswami

Overview of this book

<p>Every business has it's mission critical applications and data. Therefore, it is very important to keep database servers up and running all the time – 24 X 7. There is a need to store and process terabytes of data to cater for business needs, and it is vital to make data highly available.<br /><br />High availability is all about the site being accessible all the time. High availability solutions minimize the downtime for these mission critical applications.</p> <p>Microsoft SQL Server is a powerful relational database engine, widely used to store and maintain data in Enterprises of various levels be they small, medium or large.</p> <p>This book will teach you how best to use these readily-available options and save you time in making your websites highly available.<br /><br />This Microsoft SQL Server 2008 High Availability book will take you through pre and post installation concepts and common issues you come across while working with SQL Server HA. It will teach you how these various HA solutions can be installed using GUI and the command line. It will also show you how to troubleshoot common issues you may encounter whilst installing or managing the HA option in your environment. It provides references to external links for more advanced learning on the topic.<br /><br />This book starts with an introductory chapter into the windows domain, domain users and various handshake methods available with Windows server. It also offers information the different authentication methods available with SQL Server - giving you an insight into the importance of security. After you are through with the security aspects, your journey to installing SQL Server HA will start. It will cover the concepts of database mirroring, log shipping, clustering, and replication.<br /><br />By the end of this book you will be confident enough to take up the challenge to install any of the SQL Server HA options.</p>
Table of Contents (18 chapters)
Microsoft SQL Server 2008 High Availability
Credits
Foreword
About the Author
Acknowledgement
About the Reviewers
www.PacktPub.com
Preface

How Log Shipping works


As of now, we have understood what Log Shipping is and how it works. Now let's have a look at why we should have Log Shipping as a High Availability option or as a Disaster Recovery option in our environment. There are a few points I can pen down as a justification.

  • Easier to set up: It's really an easy job to create Log Shipping. The only thing we need to identify is that we must have two or three servers. The witness server( first is primary/source server and second is secondary/target server) is optional to configure, and it is acceptable if this witness server is not identical to other machines.

  • Manageability: Managing Log Shipping is the simplest among the available HA options that we have with SQL Server. There are only a few errors that can show up with the Log Shipping and they are quite simple to solve (we will see this in the appendix on troubleshooting in detail).

  • Can act as a Reporting server: The Secondary or standby server can act as a Reporting server...