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CompTIA Security+ Certification Guide

You're reading from   CompTIA Security+ Certification Guide Master IT security essentials and exam topics for CompTIA Security+ SY0-501 certification

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Product type Paperback
Published in Sep 2018
Publisher Packt
ISBN-13 9781789348019
Length 532 pages
Edition 1st Edition
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Author (1):
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Ian Neil Ian Neil
Author Profile Icon Ian Neil
Ian Neil
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Table of Contents (18) Chapters Close

Preface 1. Understanding Security Fundamentals FREE CHAPTER 2. Conducting Risk Analysis 3. Implementing Security Policies and Procedures 4. Delving into Identity and Access Management 5. Understanding Network Components 6. Understanding Cloud Models and Virtualization 7. Managing Hosts and Application Deployment 8. Protecting Against Attacks and Vulnerabilities 9. Implementing the Public Key Infrastructure 10. Responding to Security Incidents 11. Managing Business Continuity 12. Mock Exam 1
13. Mock Exam 2
14. Preparing for the CompTIA Security+ 501 Exam 15. Acronyms
16. Assessment 17. Other Books You May Enjoy

Disk Resiliency and Redundancy

We are going to look at different disk setups - some of which can provide fault tolerance or redundancy, meaning that, if a disk fails, then the data is still available. RAID 0 is used for faster disk access, but provides neither fault tolerance nor redundancy. Let's first look at the different RAID setups, as these will be heavily tested.

Redundant Array of Independent Disks

There is a need for the disk setup on servers to provide redundancy; this is where if one disk fails, the data is still available. We have already looked at failover clustering in Chapter 5, Understanding Network Components, where two servers share a quorum disk - the single point of failure in that scenario would be...

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