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

What is Hyper-V?


Let's now see what the Hyper-V is:

  • It is a hypervisor-based technology that allows multiple operating systems to run on a host operating system at the same time. It has advantages of using SQL Server 2008 R2 on Windows Server 2008 R2 with Hyper-V. One such example could be the ability to migrate a live server, thereby increasing high availability without incurring downtime, among others.

  • Hyper-V now supports up to 64 logical processors.

  • It can host up to four VMs on a single licensed host server. SQL Server 2008 R2 allows an unrestricted number of virtual servers, thus making consolidation easy.

  • It has the ability to manage multiple SQL Servers centrally using Utility Control Point (UCP).

  • Sysprep utility can be used to create preconfigured VMs so that SQL Server deployment becomes easier.

Note

There are two more words that are commonly used to refer to Virtual Machines, namely, Sandbox and Virtual PC (VPC). So, we shouldn't be confused if we encounter words such as VM, Sandbox...