Chapter 8: Fault-Tolerance Techniques

Learning Objectives

  • Describe different types of hardware failures
  • Plan and set up fault-tolerance methods for disk storage
  • Describe the built-in fault-tolerance features of some operating systems
  • Explain and set up UPS fault-tolerance options
  • Develop and implement a tape backup plan and rotation method
  • Develop a disaster recovery plan

 

Component Failures

 

Component Failures Definitions

 

Fault Tolerance

 

Disk-Storage Fault Tolerance

Installing Backup Disks

 

Disk Mirroring

 

Disk Duplexing

 

Installing RAID Drives

To Mirror a Drive
Open the Disk Administrator

 

To Mirror a Drive
Setting up a mirrored set

 

Server Fault Tolerance

Hot-Fix Capabilities

Transaction Tracking

Directory Replication

User Account and Security Replication

User Account and Security Replication

User Account and Security Replication

Backing Up the PDC with BDCs

 

Synchronizing the BDCs with the PDC

 

Protecting the Operating System

File and Record Locking

To Set the UPS Interface Parameters

Select the UPS icon on the Control Panel

 

Configuring the UPS setup interface

 

To Set the UPS Interface Parameters

Setting the UPS service to start automatically

Developing a Backup Plan

Connecting a Tape Drive to a Separate SCSI Adapter

Types of Backups

 

Backing Up a Server Hard Disk

 

Backing Up Workstations

 

Keeping Spare Equipment on Hand

 

Developing a Disaster Recovery Plan

  • Purchase computer operating systems with built-in fault tolerance
  • Implement disk storage redundancy
  • Implement tape backup scheme with tape rotation
  • Install a UPS
  • Store recent full backups at an offsite location
  • Purchase spare equipment
  • Formulate a written disaster recovery plan
  • Install additional cable
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