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.
Home - Table Of Contents - Contact Us
CertiGuide for Security+ (http://www.CertiGuide.com/secplus/) on CertiGuide.com
Version 1.0 - Version Date: November 15, 2004
Adapted with permission from a work created by Tcat Houser et al.
CertiGuide.com Version © Copyright 2004 Charles M. Kozierok. All Rights Reserved.
Not responsible for any loss resulting from the use of this site.