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High Availability

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ALSO CALLED: Highly Available Computing, Data Availability, HA, High-availability, 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 for a system or product is known as "five 9s" (99.999 percent) availability.Since a computer system or a network  … 
Definition continues below.
High Availability IT Downloads (View All Report Types)
6 Matches
Hitachi IT Operations Analyzer Software
sponsored by Hitachi Data Systems
SOFTWARE DOWNLOAD: Hitachi IT Operations Analyzer delivers all-in-one monitoring for the data center. A single interface provides a view to the availability and performance of servers and network and storage devices on a network. It eases troubleshooting without agents.
Posted: 13 Nov 2009 | Published: 13 Nov 2009


Quick-EDD/HA for System i and Quick-EDD/OPEN for Intel Based Servers
sponsored by Quick-EDD/iSam Blue, llc.
TRIAL SOFTWARE: High availability (HA) and disaster recovery (DR) technology is essential in all organizations, but many businesses can’t afford the proper tools. Quick-EDD offers a wide range of products with options to purchase, lease or rent. We even provide turn-key solutions that take care of all your target needs.
Posted: 16 Sep 2009 | Published: 16 Sep 2009


Embarcadero DBArtisan 8.6 - Database Administration Tool: 14 Day Trial!
sponsored by Embarcadero Technologies, Inc.
TRIAL SOFTWARE: IT organizations are trying to support an increasing number of databases and database platforms. Meanwhile, database vendors are adding more features and updating their technology. DBAs must meet zero downtime requirements, and strict SLAs.
Posted: 10 Sep 2009 | Published: 10 Sep 2009


Dell EqualLogic PS Series Storage in VMware Environments
sponsored by Dell, Inc.
PRODUCT DEMO: View this step-by-step product demonstration to see how to implement a high performance, highly available, and easily scaled SAN without impacting applications or limiting performance as workloads change and grow.
Posted: 24 Aug 2009 | Published: 24 Aug 2009


Spotlight On Messaging - Optimize Exchange Performance
sponsored by ScriptLogic Corporation
TRIAL SOFTWARE: Do you have an accurate picture of your messaging environment? Do you have a comprehensive view across multiple messaging platforms? Now you can.
Posted: 16 Apr 2009 | Published: 16 Apr 2009


SpotLight on Active Directory: Diagnostic Tool for Troubleshooting in AD Environments - Free Trial!
sponsored by ScriptLogic Corporation
TRIAL SOFTWARE: How can you tell if your domain controller is experiencing problems with replication or performance? How do you identify resource bottlenecks? We can help.
Posted: 15 Apr 2009 | Published: 15 Apr 2009

6 Matches
 
HIGH AVAILABILITY DEFINITION (continued): …  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 area network (SAN).Some availability experts emphasize that, for any system to be highly available, the parts of a system should be well-designed and thoroughly tested before they are used. For example, a new application program that has not been thoroughly tested … 
High Availability definition sponsored by SearchDataCenter.com, powered by WhatIs.com an online computer dictionary
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