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
About the Author
About the Reviewers

Prerequisites for Snapshot Replication

In the previous section, we saw that the Snapshot Replication is the basic and simplest replication topology. We should be very aware and familiar with the way Snapshot Replication can be implemented and the way it works. There is another reason for the need to be familiar with Snapshot Replication — even if we plan to implement Transactional or Merge Replication, the initial replication that gets applied is the Snapshot Replication. Therefore, we should be careful when we decide to design and implement replication solutions in our environment. There are a few prerequisites and considerations to be taken care of before implementing Snapshot Replication.

  • Primary Key: Tables without a primary key cannot be considered for replication as per normalization rule. At the same time, the table without a primary key cannot be considered a candidate for being a part of replication by design.

  • Securing snapshot folder: Snapshot folder is a folder that stores...