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ALSO CALLED: Array, R A I D Array, Storage Arrays, Arrays, RAID Array, Redundant Array of Inexpensive Disks, R A I D, Redundant Array of Independent Disks, Disk Arrays
DEFINITION: In computers, parity (from the Latin paritas: equal or equivalent) refers to a technique of checking whether data has been lost or written over when it's moved from one place in storage to another or when transmitted between computers.Here's how it works: An additional binary digit, the parity bit, is added to a group of bits that are moved together. This bit is used only for the purpose of identifying  … 
Definition continues below.
RAIDReports
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Comparison of Performance and Ease of SAN Deployment using HP Simple San Connection Manager (SSCM) Solution
sponsored by Hewlett-Packard Company
WHITE PAPER: This report compares the performance of HP's 8Gb FC solution alone versus it's performance in conjunction with the Simple SAN Connection Manager. The results are remarkable! The Simple SAN Connection Manager took half the time to configure and 2/3rd fewer configuration step to deploy a FC SAN compared with configuring each component separately.
Posted: 03 Mar 2009 | Published: 03 Mar 2009

Hewlett-Packard Company

Storage Magazine: Recovery Site Options - Hot, Warm, or Cold
sponsored by Storage Magazine
EZINE: The January 2009 issue of Storage magazine is highlighted with a cover story on how best to select a disaster recovery planning site. This issue also includes features and columns on solid state disk, killing infectious data, consolidated archiving, fast disk drive rebuilds and green storage.
Posted: 26 Feb 2009 | Published: 26 Feb 2009

Storage Magazine

Primary Data Compression in Oracle Environments
sponsored by Storwize
WHITE PAPER: The amount of data that organizations need has escalated. Expanding storage capacity to keep up with data growth requires capital investment and ongoing expenses. This paper explores a StorWize solution with compression, performance, and data integrity advantages over other approaches, translating into financial benefits and assurance..
Posted: 25 Feb 2009 | Published: 25 Feb 2009

Storwize

Solid State Storage - A New Standard for Enterprise-Class Reliability
sponsored by Fusion-IO
WHITE PAPER: With throughput and seek times faster than disk arrays, data centers are including NAND flash as part of their server infrastructure. Fusion-io offers solid state storage solutions with NAND flash that provides integrity for data exceeding today's solid state storage solutions and surpasses enterprise-class rotating magnetic storage devices.
Posted: 16 Feb 2009 | Published: 16 Feb 2009

Fusion-IO

Taming The Power Hungry Data Center
sponsored by Fusion-IO
WHITE PAPER: The widening disparity between CPU performance and that of storage subsystems has spawned numerous solutions that do not fix the problem. This white paper exposes this fundamental flaw and introduces the means available today to substantively reduce power consumption while improving performance: Fusion-io's flash memory-based storage technology.
Posted: 16 Feb 2009 | Published: 16 Feb 2009

Fusion-IO

Fusion-io ioDrive Data Sheet
sponsored by Fusion-IO
DATA SHEET: Designed around a revolutionary silicon-based storage architecture known as ioMemory, the ioDrive is the world's most advanced NAND clustering technology with performance comparable to DRAM and storage capacity on par with today's hard disks, giving you the power to improve both memory capacity and storage performance by up to one thousand times.
Posted: 16 Feb 2009 | Published: 16 Feb 2009

Fusion-IO

User Directed Storage Management: How To Make Users Accountable For Responsible Storage Usage
sponsored by Northern Parklife
WHITE PAPER: The accelerated pace of doing business in today's world puts organizations under tremendous pressure. They need to be fleet and flexible, able to rapidly respond to opportunities, make decisions, and deploy resources. Critical to this is the way information is managed and stored.
Posted: 12 Feb 2009 | Published: 12 Feb 2009

Northern Parklife

Streamline Your Storage Usage: 4 Straightforward Ways To True NAS Management
sponsored by Northern Parklife
WHITE PAPER: In a relatively short span of time, Network Attached Storage [NAS] has become a popular, widely implemented technology given its many attractive features and benefits. This whitepaper details four techniques for managing network attached storage, including file management simplification and data access without server intervention.
Posted: 12 Feb 2009 | Published: 12 Feb 2009

Northern Parklife

Achieve Immediate Returns With Practical Storage Management
sponsored by Northern Parklife
WHITE PAPER: This white paper in an introduction to Northern Storage Suite, a perfect solution for organizations seeking to implement a systematic approach to storage resource management, once and for all reclaiming control over previously ungoverned storage use.
Posted: 12 Feb 2009 | Published: 12 Feb 2009

Northern Parklife

Enhancing Disk-to-Disk Backup with Data Deduplication
sponsored by FalconStor Software
WEBCAST: FalconStor's data deduplication solutions address the problem of duplicate data from backups. It slashes media costs, streamlines management tasks, and minimizes the bandwidth required for replication. Data deduplication improves efficiency and saves money, exactly what is needed when IT budgets are tight.
Posted: 12 Feb 2009 | Premiered: Feb 12, 2009

FalconStor Software

Demystifying Data De-Duplication: Choosing the Best Solution
sponsored by FalconStor Software
WHITE PAPER: Data de-duplication has been described as the next evolutionary step in backup technology. Many vendors lay claim to the best data de-duplication approach, leaving customers to face the difficulty of separating hype from reality. This document provides the background information required to make an informed data de-duplication purchasing decision.
Posted: 12 Feb 2009 | Published: 12 Feb 2009

FalconStor Software

Coping with the Explosion of Data in Life Sciences Research: How Storage Is Managed Will Either Advance-- or Slow--the Pace of Biomedical Discovery
sponsored by Ocarina Networks
WHITE PAPER: Ocarina's ECOsystem is a solution that inserts transparently as part of a data center's storage infrastructure.
Posted: 23 Jan 2009 | Published: 23 Jan 2009

Ocarina Networks

Five Cost-Effective Ways to Enable Fast Recovery
sponsored by i365, makers of Evault
WHITE PAPER: This white paper reviews options for a multifaceted recovery strategy, ensuring that your key systems are protected with maximum efficiency at minimal cost.
Posted: 21 Jan 2009 | Published: 20 Jan 2009

i365, makers of Evault

Case Study: Virtualizing with XenServer and NetApp
sponsored by NetApp
CASE STUDY: Mine Safety Appliances were facing a problem of server sprawl which created many problems in their process and to overcome this problem they choose XenServer and NetApp as their solution.
Posted: 19 Dec 2008 | Published: 19 Dec 2008

NetApp

Using Snapshots in Your Data Backup Strategy
sponsored by Dell | EqualLogic
WHITE PAPER: This document discusses the use of snapshots in your data backup strategy, as well as a new snapshot product offering from EqualLogic to simplify your backup projects.
Posted: 17 Dec 2008 | Published: 16 Dec 2008

Dell | EqualLogic

General Backup Purchasing Considerations
sponsored by Quantum Corporation
WHITE PAPER: This chapter discusses the process of evaluating and purchasing backup products. Also discussed are the issues to be aware of during this process, such as recovery deadlines, scalability, security, and more.
Posted: 17 Dec 2008 | Published: 17 Dec 2008

Quantum Corporation

Dell Storage Solutions Guide for Microsoft Hyper-V
sponsored by Dell and Microsoft
WHITE PAPER: This guide primarily focused on storage arrays based on their support for key virtualization features, such as high availability and virtual machine migration.
Posted: 11 Dec 2008 | Published: 11 Dec 2008

Dell and Microsoft

Integrating HP Data Protector Software with HP Data Deduplication Solutions
sponsored by HP
WHITE PAPER: This white paper will discuss HP Data Protector Software which fully supports HP data deduplication technologies allowing you to recover files more quickly while reducing your data management and storage costs.
Posted: 10 Dec 2008 | Published: 10 Dec 2008

HP

HP Data Protector Software Advanced Backup to Disk Integration with Virtual Tape Libraries White Paper
sponsored by Hewlett-Packard Company
WHITE PAPER: This white paper provides a better understanding of the integration of HP Data Protector Software with Virtual Tape Libraries by utilizing the Advanced Backup to Disk functionality available with the HP Data Protector Software.
Posted: 10 Dec 2008 | Published: 10 Dec 2008

Hewlett-Packard Company

Managing SharePoint in an Enterprise Environment
sponsored by Global Knowledge
WHITE PAPER: Microsoft Office SharePoint Server 2007 and other SharePoint technologies are excellent tools for a modern, web-based office environment. This white paper gives pointers on managing them.
Posted: 10 Dec 2008 | Published: 11 Oct 2008

Global Knowledge

Delivering Holistic Business Continuity with Auto-Replication
sponsored by Dell | EqualLogic
WHITE PAPER: Every organization needs a holistic business continuity solution for data protection, Auto-Replication protects you from all disasters, as well as improving backup.
Posted: 05 Dec 2008 | Published: 05 Dec 2008

Dell | EqualLogic

Sun Storage J4000 Array Family Scalable, Reliable and Cost-effective Solutions for Open Storage Infrastructures
sponsored by Sun Microsystems, Inc.
DATA SHEET: The Sun Storage J4200 array provides high availability, cost-effective 2U storage and supports up to 12 3.5-inch SATA or SAS hard drives.
Posted: 04 Dec 2008 | Published: 04 Dec 2008

Sun Microsystems, Inc.

Disk-based Data Protection Options: The Changing Data Protection Landscape
sponsored by ExaGrid Systems, Inc.
WHITE PAPER: This paper will compare and contrast the benefits of all new disk-based data protection options to allow you to select the best technology for each of the data types to be protected in your environment.
Posted: 20 Nov 2008 | Published: 20 Oct 2008

ExaGrid Systems, Inc.

ExaGrid: A Scalable Approach to Disk-based Backup
sponsored by ExaGrid Systems, Inc.
WHITE PAPER: Looking for a new disk-based backup solution? Download this Taneja Group white paper to learn some key criteria to consider when evaluating disk-based data protection vendors and how one company matches up against these criteria.
Posted: 20 Nov 2008 | Published: 20 Oct 2008

ExaGrid Systems, Inc.

Sharepoint E-zine Vol.4: Balancing SharePoint Governance
sponsored by SearchWinIT
EZINE: SharePoint has built-in features that allow site owners to create site maps without any custom coding at all.
Posted: 18 Nov 2008 | Published: 18 Nov 2008

SearchWinIT
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RAID DEFINITION (continued): …  whether the bits being moved arrived successfully. Before the bits are sent, they are counted and if the total number of data bits is even, the parity bit is set to one so that the total number of bits transmitted will form an odd number. If the total number of data bits is already an odd number, the parity bit remains or is set to 0. At the receiving end, each group of incoming bits is checked to see if the group totals to an odd number. If the total is even, a transmission error has occurred and either the transmission is retried or the system halts and an error message is sent to the user.The … 
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