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Table of Contents

Book
Introduction

Managing
Security

Outsourcing
Options

Reserving
Rights

Determining
Identity

Preserving
Privacy

Connecting
Networks

Hardening
Networks

Storing
Information

Hiding
Information

Accessing
Information

Ensuring
Availability

Detecting
Intrusions

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RAID
Chapter List
RAID
Clustering
Backup Systems
Distributed Computing (web bonus)
Rollout Systems (web bonus)
More Information
Resources (links)
Discussions
FAQs
Errata
Sample Pages
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A technique for using multiple synchronized hard drives to increase performance and/or reliabliity.


Organizations and individuals store vast amounts of their data on hard drives today. Hard drives offer large amounts of storage space and the ability to seek and retrieve data very quickly. However, computers are imperfect machines made by imperfect beings and warranties do not last forever. The result is a simple technological fact: Hard drives fail. Eventually, your will be confronted with a dead hard drive; therefore, it is important to be prepared. When using the right combination of technologies and techniques, a dead hard drive is barely a blip on the radar screen.

What if you could store all the information that normally is saved on one hard drive to two or more hard drives at the exact same time? What if one of these hard drives breaks and data could be instantly read from any of the other drives? Its highly unlikely that two hard drives will fail simultaneously. Now, imagine that you could employ this type of storage in real time. Thiss very real technology that eliminates downtime due to drive failure is known to most of us as RAID.

More Information

The above information is the start of a chapter in "Network Security Illustrated," published by McGraw-Hill and available from amazon.com, as well as your local bookstore. The book goes into much greater depth on this topic. To learn more about the book and what it covers, click here.

Below, you'll find links to online resources that supplement this portion of the book.


Resources

(websites, books, etc.)

Discussions

FAQs

Errata

Sample Pages