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Fault Tolerance

ALSO CALLED: Fault-tolerance, Fault Tolerant, and FT
DEFINITION: Fault-tolerant describes a computer system or component designed so that, in the event that a component fails, a backup component or procedure can immediately take its place with no loss of service. Fault tolerance can be provided with software, or embedded in hardware, or provided by some combination.  … 
Definition continues below.


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The New World of Fault-Tolerant Solutions Podcast
sponsored by Hewlett-Packard Company
PODCAST: Listen to this podcast and discover a new solution for business-critical, 24/7 computing environments that dramatically increases performance, reduces costs and complexities and uses energy efficiently.
Posted: 22 Oct 2008 | Premiered: 22 Oct 2008
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The New World of Fault-Tolerant Solutions
sponsored by Hewlett-Packard Company
WEBCAST: A special live HP mediacast event entitled The New World of Fault-Tolerant Solutions is scheduled for Wednesday, November 5, 2008 at 12:00 p.m. EST.
Posted: 08 Oct 2008 | Premiered: Available On Demand
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FAULT TOLERANCE DEFINITION (continued): … 

In the software implementation, the operating system provides an interface that allows a programmer to "checkpoint" critical data at pre-determined points within a transaction. In the hardware implementation (for example, with Stratus and its VOS operating system), the programmer does not need to be aware of the fault-tolerant capablilities of the machine.

At a hardware level, fault tolerance is achieved by duplexing each hardware component. Disks are mirrored. Multiple processors … 
Fault Tolerance definition sponsored by SearchCIO-Midmarket.com, powered by WhatIs.com an online computer dictionary



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