| Chapter 41 – |
Data Backups and Archives |
M. E. Kabay, PhD, CISSP
Chapter Contents:
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41.1 |
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Introduction
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41.1.1 |
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Definitions
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41.1.2 |
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Need
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41.2 |
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Making Backups
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41.2.1 |
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Parallel Processing
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41.2.2 |
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Hierarchical Storage Systems
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41.2.3 |
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Disk Mirroring
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41.2.3.1 |
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RAID
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41.2.3.2 |
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Workstation and Personal Computer Mirroring
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41.2.4 |
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Logging
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41.2.5 |
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Backup Software
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41.2.6 |
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Removable Media
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41.2.6.1 |
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Diskettes
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41.2.6.2 |
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Large-Capacity Hard Disk Cartridges
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41.2.6.3 |
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Optical Storage
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41.2.6.4 |
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Tape Cartridge Systems
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41.2.7 |
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Labeling
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41.2.8 |
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Indexing
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41.3 |
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Backup Strategies
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41.3.1 |
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Exclusive Access
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41.3.2 |
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Types of Backups
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41.3.3 |
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Computer Systems
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41.3.3.1 |
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Mainframes
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41.3.3.2 |
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Servers
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41.3.3.3 |
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Workstations
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41.3.3.4 |
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Portable Computers
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41.3.3.5 |
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Handheld Computers
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41.3.4 |
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Testing
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41.4 |
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Backup Archives, Maintenance, and Retention
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41.4.1 |
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Retention Policies
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41.4.2 |
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Rotation
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41.4.3 |
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Media Longevity and Technology Changes
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41.4.3.1 |
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Media Degradation
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41.4.3.2 |
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Software Changes
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41.5 |
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Backup Storage
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41.5.1 |
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Environmental Protection
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41.5.2 |
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On-site Protection
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41.5.3 |
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Off-site Protection
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41.5.3.1 |
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Care during Transport
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41.5.3.2 |
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Homes
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41.5.3.3 |
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Safes
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41.5.3.4 |
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Banks
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41.5.3.5 |
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Data Vaults
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41.5.3.6 |
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Online Backups
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41.6 |
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Disposal
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41.6.1 |
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Scavenging
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41.6.2 |
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Data and Media Destruction
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41.7 |
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Costs
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41.8 |
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Optimizing Frequency of Backups
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41.9 |
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Summary
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41.11 |
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For Further Reading
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