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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 AvailabilityReports
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Virtualization Backup Tools
sponsored by SearchDataCenter.com
EBRIEF: This expert briefing from SearchServerVirtualization.com explains how physical and virtual backups differ and offers advice for integrating these two essential processes. Discover key criteria to consider when evaluating your various market options and find out how your backup technology fits into your larger disaster recovery plan.
Posted: 09 Feb 2012 | Published: 09 Feb 2012

SearchDataCenter.com

Beating web application security threats
sponsored by SearchSecurity.com
EGUIDE: Application security plays an important role in ensuring the accuracy and confidentiality of data, yet at times teams may fear that security can interfere with overall performance. Read this e-book for tips that discuss the value of application security and explain how to implement it to ensure the highest availability and usability.
Posted: 14 Nov 2011 | Published: 31 Oct 2011

SearchSecurity.com

City of Inglewood
sponsored by Micro Focus
WHITE PAPER: Access this white paper to discover how one city migrated from their aging mainframe to a Windows platform. Learn how your organization can save on maintenance costs and increase operational efficiency by making a similar move.
Posted: 14 May 2012 | Published: 14 May 2012

Micro Focus

Micro Focus RUMBA makes the connection for REI
sponsored by Micro Focus
WHITE PAPER: Access this white paper to discover a solution to troublesome connectivity problems. This case study explores how REI provides its clients with a reliable connection.
Posted: 14 May 2012 | Published: 14 May 2012

Micro Focus

WP #103: How Monitoring Systems Reduce Human Error in Distributed Server Rooms and Remote Wiring Closets
sponsored by APC by Schneider Electric
WHITE PAPER: Access this white paper to learn how a basic monitoring and automation system can help reduce downtime incidents in your server room and remote wiring closet. Also inside, real-life horror stories from your peers and how they could have been prevented.
Posted: 02 May 2012 | Published: 02 May 2012

APC by Schneider Electric

E-Guide: Exchange Server 2010 Backup and Recovery Tips and Tricks
sponsored by Dell, Inc.
EGUIDE: This expert e-guide explores the latest backup and recovery features of Exchange 2010. Find out how you can leverage high-availability and site resilience capabilities to simplify and streamline disaster recovery processes.
Posted: 01 May 2012 | Published: 26 Apr 2012

Dell, Inc.

Solitaire Interglobal: PowerLinux vs Windows for your SAP Deployments
sponsored by IBM
WHITE PAPER: This white paper assesses two leading operating systems and provides proven metrics for effectively evaluating them. Determine which platform offers the availability, performance, and efficiency that your SAP environment requires.
Posted: 27 Apr 2012 | Published: 27 Apr 2012

IBM

Cabot Partners: Optimizing Business Value for Midsized SAP Landscapes with IBM PowerLinux: Simpler by Design
sponsored by IBM
WHITE PAPER: x86-based Linux platforms may seem like an affordable option for supporting SAP workloads, but ongoing maintenance costs quickly exceed the low acquisition costs of these architectures. Learn about a recommended alternative that can be integrated with virtualization and find out why it is ideally suited for your SAP environment.
Posted: 26 Apr 2012 | Published: 26 Apr 2012

IBM

LBBW Asset Management Improves Fault-Tolerance and Scalability of Citrix® XenDesktop® VDI Deployment with Sanbolic® Melio™
sponsored by Sanbolic Inc.
WHITE PAPER: In this case study, discover how you can prevent unexpected downtime and enable highly available and scalable virtual desktops. Find out how you can build a fault-tolerant infrastructure and reduce your storage requirements with a robust software suite.
Posted: 20 Apr 2012 | Published: 20 Apr 2012

Sanbolic Inc.

Brandbank uses Sanbolic’s Melio to Deliver High Availability and Improve Performance for Image File-Serving Service
sponsored by Sanbolic Inc.
CASE STUDY: This case study details how one company leveraged a dedicated software to gain simultaneous access to critical information, eliminating the need for redundant copies of data and realizing tremendous storage savings.
Posted: 18 Apr 2012 | Published: 18 Apr 2012

Sanbolic Inc.

VMware’s vSphere Storage Appliance: High Availability for Small IT Operations
sponsored by VMware, Inc.
WHITE PAPER: While maintaining high availability is critical in every business to avoid downtime and keep systems running smoothly, it can be very costly. This white paper introduces a new, automated storage solution that offers a cost-effective alternative approach to ensuring high availability and business continuity.
Posted: 06 Apr 2012 | Published: 03 Oct 2011

VMware, Inc.

E-Guide: Enhance Your DR Strategy With Virtual Desktops
sponsored by Dell, Inc. and Intel®
EGUIDE: Discover how virtual desktops can enhance a virtualization disaster recovery strategy by providing increased replication and connectivity. Plus, take a look at a virtualization high availability checklist compiled exclusively by our editors at SearchServerVirtualization.com.
Posted: 27 Mar 2012 | Published: 27 Mar 2012

Dell, Inc. and Intel®

VMware: Virtualizing Your Infrastructure Just Got Easier
sponsored by VCE
WHITE PAPER: Concerns about migration downtime, security, and application service level maintenance have kept many organizations from virtualizing their infrastructure. Read this paper to discover how a converged infrastructure platform can bring you all the benefits of virtualization without the risks typically associated with an implementation.
Posted: 15 Feb 2012 | Published: 15 Feb 2012

VCE

VCE and VMware: Virtualizing Your Infrastructure Just Got Easier
sponsored by VCE
WHITE PAPER: Concerns about migration downtime, security, and application service level maintenance have kept many organizations from virtualizing their infrastructure. Read this paper to discover how a converged infrastructure platform can bring you all the benefits of virtualization without the risks typically associated with an implementation.
Posted: 15 Feb 2012 | Published: 15 Feb 2012

VCE

Datacenter Consolidation Best Practices Whitepaper
sponsored by Virtual Instruments
WHITE PAPER: Check out this white paper to learn why consolidating your storage may be the answer to your content management and security challenges. In this paper, learn about the changing requirements of today's storage landscape and receive best practices to help you manage performance, capacity, reliability and cost of your organization's storage.
Posted: 13 Feb 2012 | Published: 13 Feb 2012

Virtual Instruments

E-Guide: Selecting Server Hardware for SQL
sponsored by Dell and Microsoft SQL
EGUIDE: Read this expert e-guide to discover the hottest in high-performance SQL Server hardware, including a new breed of technologies that can provide multiprocessor power to SQL Server on multiple hosts. Find tips and best practices for choosing server hardware for both virtual and non-virtual SQL environments.
Posted: 09 Feb 2012 | Published: 30 Jan 2012

Dell and Microsoft SQL

Exchange Insider Ezine Volume 12
sponsored by SearchExchange.com
EZINE: Using features like VMware vSphere High Availability and distributed resource scheduler will ensure that Exchange achieves as much uptime as possible and performs at optimal levels.
Posted: 24 Jan 2012 | Published: 23 Jan 2012

SearchExchange.com

Boeing Commercial Aviation Services IT performance, availability, customer satisfaction soars
sponsored by Hewlett-Packard Company
WHITE PAPER: This case study details how Boeing's Commercial Aviation Services division leveraged application performance management (APM) tools to improve availability of business critical applications; empower application teams to take ownership of system availability and performance; streamline business processes; and lower costs.
Posted: 22 Dec 2011 | Published: 31 Aug 2010

Hewlett-Packard Company

Introduction to Virtualisation E-Book Chapter 2: Integrating High Availability Tactics into a Virtual Infrastructure
sponsored by VMware and NetApp
EBOOK: This chapter outlines high-availability methods you can use to protect production workloads running in a virtual environment. Get advice to help you decide on the right HA strategy and obtain detailed information on working with single-site and multi-site clusters as well as guest failover clustering.
Posted: 13 Dec 2011 | Published: 13 Dec 2011

VMware and NetApp

Dynamic Routing Architecture
sponsored by Progress
WHITE PAPER: Read this paper to find out how dynamic routing architecture (DRA) optimizes communications beyond clustering in complex, distributed topologies to enable easier scaling and greater agility in changing the IT environment to meet changing business needs and market conditions.
Posted: 28 Nov 2011 | Published: 28 Nov 2011

Progress

High Availability and Load Balancing
sponsored by Progress
WHITE PAPER: This paper, the third in a series on enterprise data integration, examines how "connection-weighted load balancing" provides fast, reliable, highly available cluster processing.
Posted: 28 Nov 2011 | Published: 31 Dec 2010

Progress

Virtual Fabrics Provide Administrative Flexibility in a Shared Storage Environment
sponsored by Brocade
WHITE PAPER: Learn about a technology that enables you to better manage your SAN assets by creating logical groups of separately managed devices, ports, and switches within your SAN - all without disrupting existing environments.
Posted: 21 Nov 2011 | Published: 30 Jan 2009

Brocade

Top five considerations for small and midsize businesses looking to deploy virtual desktops
sponsored by Citrix
WHITE PAPER: This paper examines the top 5 VDI considerations from an SMB point of view, recognizing the unique resource and budget constraints, and compare approaches that will help you select the best solution for your organization. View now to explore how you can cut operational costs and improve worker productivity by implementing virtual desktops. 
Posted: 31 Oct 2011 | Published: 31 Oct 2011

Citrix

Business Continuity for SAP on System Z
sponsored by IBM
EBOOK: Read this e-book to learn how to fully automate the management of all SAP components and related products running on z/OS, AIX®, or Linux®. The automation software monitors all resources and controls the restart and/or takeover of failing components, thereby ensuring near continuous availability of the SAP system.
Posted: 10 Oct 2011 | Published: 31 Oct 2008

IBM

Oracle x86 Rack Servers Optimized for Rapid Deployments and Operational Efficiency
sponsored by Oracle Corporation
WHITE PAPER: This white paper reveals key factors to consider when selecting a server and explains why more and more organizations are relying on x86 platforms. Access key findings from your peers concerning their spending on servers, power and cooling expenses, and more.
Posted: 07 Oct 2011 | Published: 01 Feb 2011

Oracle Corporation
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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 … 
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