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High Availability

ALSO CALLED: Highly Available Computing, Data Availability, HA, High-availability, and Availability
DEFINITION: In information technology, high availability refers to a system or component that is continuously operational for a desirably long length of time. Availability can be measured relative to "100% operational" or "never failing." A widely-held but difficult-to-achieve standard of availability  … 
Definition continues below.


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Replay 2007
sponsored by AppAssure Software
TRIAL SOFTWARE:   Posted: 30 Apr 2008 | Published: 30 Apr 2008
SUMMARY: Replay provides continuous application protection for your entire messaging environment. Download to learn how Replay keeps the Exchange environment running.

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SQL job manager
sponsored by Idera
TRIAL SOFTWARE:   Posted: 13 Feb 2008 | Published: 13 Feb 2008
SUMMARY: Spending too much time managing, scheduling and worrying about SQL Server jobs? Download now to try SQL job manager to be able to centralize and streamline SQL Server job management.

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Continuous Data Protection System
sponsored by Revivio, Inc.
SOFTWARE DEMO:   Posted: 19 Apr 2004 | Published: 19 Apr 2004
SUMMARY: Revivio?s Continuous Protection System (CPS) is a groundbreaking approach to data protection and recovery that allows companies to restore data instantly, exactly as it existed at any point in time, and to recover business applications in just minutes.

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HIGH AVAILABILITY DEFINITION (continued): …  for a system or product is known as "five 9s" (99.999 percent) availability.

Since a computer system or a network consists of many parts in which all parts usually need to be present in order for the whole to be operational, much planning for high availability centers around backup and failover processing and data storage and access. For storage, a redundant array of independent disks (RAID) is one approach. A more recent approach is the storage … 
High Availability definition sponsored by SearchDataCenter.com, powered by WhatIs.com an online computer dictionary



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