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Fault Tolerance

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ALSO CALLED: Fault-tolerance, Fault Tolerant, 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.In the software implementation, the operating system provides an interface that allows a programmer  … 
Definition continues below.
Fault ToleranceReports
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Fault Tolerant Servers: The Choice for Continuous Availability on Microsoft Windows Server Platform
sponsored by NEC Corporation of America
WHITE PAPER: Fault Tolerant servers are the choice for continuous availability on Windows. Download this white paper to learn why clustering and redundancy might not be enough and how Fault Tolerant servers can help provide the continuous availability IT shops need.
Posted: 01 Jun 2007 | Published: 01 Feb 2007

NEC Corporation of America

Continuous Availability for Enterprise Messaging
sponsored by Progress
WHITE PAPER: This white paper discusses the problems associated with current fault-tolerant approaches to enterprise messaging solutions and introduces strategies to improve operational availability.
Posted: 02 Mar 2007 | Published: 01 Apr 2004

Progress

Progressive Stamp Incorporated - The True Cost of Downtime for Manufacturers
sponsored by NEC Corporation of America
WHITE PAPER: PSI sought a zero-downtime machine with the muscle to run a few very resource-intensive database applications.
Posted: 16 Feb 2007 | Published: 01 Feb 2007

NEC Corporation of America

Microsoft Windows Unified Data Storage Server 2003 - Data Sheet
sponsored by Microsoft
DATA SHEET: Microsoft ® Windows ® Unified Data Storage Server 2003 raises the bar in storage management ease and affordability
Posted: 07 Feb 2007 | Published: 01 Feb 2007

Microsoft

AGL Resources Relies on F5 Products for Application Traffic Management, Link Load Balancing and Secure Remote Access
sponsored by F5 Networks, Inc.
CASE STUDY: AGL Resources, an Atlanta-based energy services holding company, relies on four different F5 products to support their growing infrastructure investments and to improve their ROI.
Posted: 16 Jan 2007 | Published: 01 Dec 2004

F5 Networks, Inc.

RAID 50 Interleave White Paper
sponsored by Xtore
WHITE PAPER: Improve RAID performance, lower the likelihood of critical drive failure and rebuild faster. Read this white paper and learn how to develop a truly Automated Tiered Storage Solution.
Posted: 01 Jan 2007 | Published: 01 Dec 2006

Xtore

HP Integrity NonStop NS1000 Server: Standards-Based Innovation at the Entry Level for Business-Critical Applications
sponsored by Hewlett-Packard Company
WHITE PAPER: In today's "do more with less" computing environment, IT managers must weigh the advantages of proven fault-tolerant capabilities against the need to contain costs. Discover a cost-effective solution for the most critical business applications.
Posted: 19 Jul 2006 | Published: 01 Jul 2006

Hewlett-Packard Company

Reducing the Hidden Costs Associated with Upgrades of Data Center Power Capacity
sponsored by Schneider Electric
WHITE PAPER: There are cost factors beyond a standard TCO analysis to be considered when adding a UPS system to a data center. Learn how a rack-based, scalable UPS system allows planned growth to occur easily with minimal impact to existing IT processing applications.
Posted: 13 Jan 2005 | Published: 01 Feb 2005

Schneider Electric

Rack Powering Options for Data Centers and Network Rooms
sponsored by APC by Schneider Electric
WHITE PAPER: Methods and requirements for providing electrical power to Rack Enclosures for Information Technology Equipment are described. The need for the rack power system to adapt to changing requirements is identified and quantified.
Posted: 31 Oct 2002 | Published: 01 Feb 2003

APC by Schneider Electric
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FAULT TOLERANCE DEFINITION (continued): … 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.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 capabilities of the machine.At a hardware level, fault tolerance is achieved by duplexing each hardware component. Disks are mirrored. Multiple processors are "lock-stepped" together and their outputs are compared for correctness. When an anomaly occurs, the faulty component is determined and taken out of service, but the machine continues to function as usual.
Fault Tolerance definition sponsored by SearchCIO-Midmarket.com, powered by WhatIs.com an online computer dictionary

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