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Table Of Contents  CertiGuide to Security+
 9  Chapter 5:  Operational/Organizational Security (Domain 5.0; 15%)
      9  5.3  Business Continuity

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5.3.1  Utilities
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5.3.3  Backups
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5.3.2  High Availability / Fault Tolerance

High Availability in computers generally refers to another computer that is capable of continuing should one fail. More modern fail over designs is capable of load sharing when both systems are functioning normally and pick up the load on 'fail-over'.

If it is important…

Consider Fail over computer clusters and computers designed for hot swapping components.

Fault Tolerance is the generally accepted term for disk sub-systems. For example, RAID 1, also known as disk mirroring because it has a complete byte-for-byte copy of the other disk. Disk Duplexing adds to the idea of a second disk controller preventing the violent failure of a single disk controller from trashing both copies.


Previous Topic/Section
5.3.1  Utilities
Previous Page
Pages in Current Topic/Section
1
Next Page
5.3.3  Backups
Next Topic/Section

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