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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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SearchServerVirtualization.com E-Guide: Tips on High Availability in Virtual Environments - Automating VM Availability, Achieving Fault Tolerance
sponsored by Marathon Technologies
WHITE PAPER: This E-Guide includes a variety of tips and articles on how to leverage virtualization for high availability. Learn how to design a HA strategy and how to avoid potential roadblocks.
Posted: 08 Aug 2008 | Published: 01 Aug 2008
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TOPICS:  Clustering | Downtime | Fault Tolerance | High Availability | Network Performance | Security | Server Virtualization | Server Virtualization Software
Enhancing Availability of IT Infrastructure with Virtualization and Fault Tolerant Servers
sponsored by Marathon Technologies
WHITE PAPER: This document explores a range of off-the-shelf technologies to enhance the availability and reliability of IT infrastructure in existing installations without necessarily needing to install new hardware.
Posted: 22 Jul 2008 | Published: 01 Jul 2008
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TOPICS:  Data Center Consolidation | Enterprise Systems | Fault Tolerance | Hardware | High Availability | IT Infrastructure | Server Virtualization
Building a Virtual Infrastructure from Servers to Storage
sponsored by NetApp
WHITE PAPER: This technical report demonstrates how integrating Network Appliance technologies in a virtual infrastructure can solve the unique challenges inherent with ESX deployments in the areas of storage utilization, fault tolerance, and backups.
Posted: 17 Jan 2008 | Published: 01 Oct 2006
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TOPICS:  Backups | Data Recovery | Disaster Recovery | Fault Tolerance | RAID | Server Virtualization | Storage Best Practices | Storage Consolidation | Storage Provisioning | Storage Virtualization | Storage Virtualization Software | VMware
Making Large UPS Systems More Efficient
sponsored by APC
WHITE PAPER: This white paper discusses the common errors and misunderstandings in evaluating Uninterruptible Power Supply efficiency. UPS efficiency curves are explained, compared, and their cost implications quantified.
Posted: 20 Sep 2007 | Published: 03 Sep 2007
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TOPICS:  Business Continuity Planning | Disaster Planning | Downtime | Electrical Cable | Fault Tolerance | High Availability | Network Performance | RAS (Reliability, Availability, Serviceability) | UPS
The Seven Types of Power Problems
sponsored by APC
WHITE PAPER: This white paper describes the most common types of power disturbances, what they can do to your critical equipment and how you can protect against them.
Posted: 11 Sep 2007 | Published: 10 Sep 2007
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TOPICS:  Business Continuity Planning | Disaster Planning | Downtime | Fault Tolerance | High Availability | Network Performance | RAS (Reliability, Availability, Serviceability) | RPO | UPS
 
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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