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Table of Contents:

Introduction

1. Defining Availability

2. Redundancy: The Key to Carrier-Grade Availability

3. Preserving Application State: Two Techniques

4. Highly Available Database Managers

5. A Sidebar on How an RDBMS Works

6. Understanding Safeness Levels

7. Data Loss Considerations

8. MTTR Considerations

9. Application Throughput Considerations

10. Three-Way Tradeoff Summary

Self-Test

Test Answers

Glossary

PDF of this tutorial

Acronyms Guide

DBMS - Database Management System

HA - Highly Available or High Availability

HA-DBMS - Highly Available Database Manganese System

MTBF - mean time between failures

MTTR - mean time to repair

RDBMS - relational database management system