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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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GPS Receiver Testing
sponsored by National Instruments
WHITE PAPER: Today, the power of software enables you to create GPS waveforms that accurately emulate the real word signal. In addition, advances in instrument bus technology enable record and playback of live GPS signals with PXI instrumentation.
Posted: 21 Jul 2008 | Published: 01 Jan 2006

National Instruments

StorTrends iTX®: Application-aware Scheduled Snapshots with Microsoft® VSS and SAFE
sponsored by Excel Meridian Data, Inc.
WHITE PAPER: The snapshot implementation featured in StorTrends iTX is undoubtedly one of the best, most feature-rich in the industry.
Posted: 30 Jun 2008 | Published: 01 Jan 2007

Excel Meridian Data, Inc.

Chapter 2: The Shortcut Guide™ to Exchange Server 2007 Storage Systems
sponsored by LeftHand Networks
BOOK: This chapter reviews not only the common mistakes that are made when calculating the amount of storage required to support a group of users but also the mistakes made when calculating the I/O capacity required to support that group of users.
Posted: 12 Jun 2008 | Published: 01 Jan 2007

LeftHand Networks

Increase Application Performance with Solid State Disks
sponsored by Texas Memory Systems, Inc.
WHITE PAPER: Super fast solid state discs allow organizations to manage high transaction volumes and larger numbers of users using fewer servers. Read this white paper to learn more about SSDs and how they provide a cost-effective way to improve application per...
Posted: 10 Jun 2008 | Published: 01 Feb 2008

Texas Memory Systems, Inc.

Lower Your Total Cost of Ownership with Fast Solid State Disks
sponsored by Texas Memory Systems, Inc.
WHITE PAPER: This white paper provides an overview of solid state disks (SSD) and the benefits they deliver for companies. SSDs are becoming a practical option for dealing with application performance concerns. Learn how they deliver a lower Total Cost of Ownership.
Posted: 10 Jun 2008 | Published: 10 Jun 2008

Texas Memory Systems, Inc.

Best Practices for Architecting a Lustre-Based Storage Environment
sponsored by DataDirect Networks
WHITE PAPER: This document details a number of design implications and provides the reader with information to make informed decisions to scale a high-performance cluster file I/O.
Posted: 09 Jun 2008 | Published: 01 Jun 2008

DataDirect Networks

NetBackup Disk Based Data Protection Options
sponsored by Symantec Corporation
WHITE PAPER: This paper explains the disk options and their capabilities as well as the other new features in NetBackup 6.5 that make up the Enterprise Disk Foundation, also it provides guidance in choosing the appropriate disk options for your environment.
Posted: 03 Jun 2008 | Published: 01 Oct 2007

Symantec Corporation

Dell™ Equallogic™ PS Series with VMware Site Recovery Manager Simple, Affordable, Automated Disaster Recovery
sponsored by Dell, Inc.
PRODUCT LITERATURE: VMware Site Recovery Manager (SRM) is a new VMware Infrastructure 3-based solution that is tightly integrated with Dell EqualLogic PS Series storage to offer centralized disaster recovery management and testing for a virtualized datacenter.
Posted: 28 May 2008 | Published: 01 May 2008

Dell, Inc.

Performance & Simplicity in One Package
sponsored by StorMagic, Inc.
DATA SHEET: The StorMagicâ„¢ SM Series is the first data storage solution meticulously engineered for both high performance and unprecedented simplicity.
Posted: 20 May 2008 | Published: 20 May 2008

StorMagic, Inc.

SAN-aware Operating Systems Enable Server-based Storage Provisioning
sponsored by Dell, Inc.
PRODUCT LITERATURE: EqualLogic PS Series solutions deliver the benefits of storage consolidation in an intelligent, enterprise-class storage system that is easy to install, manage and grow.
Posted: 09 May 2008 | Published: 09 May 2008

Dell, Inc.

Building a Highly Reliable SAN
sponsored by Dell | EqualLogic
WHITE PAPER: System reliability is a vital component in Storage Area Network (SAN) design that keeps your production environment operating and avoids data loss and downtime.
Posted: 09 May 2008 | Published: 09 May 2008

Dell | EqualLogic

MULTI-PATH I/O - End to End High Availability and Performance
sponsored by Dell, Inc.
PRODUCT LITERATURE: Multipath Input/Output (MPIO) is server software that extends redundancy to the entire I/O pathway in a SAN, delivering fault tolerance, high availability, and better performance.
Posted: 09 May 2008 | Published: 09 May 2008

Dell, Inc.

Improving Storage Expansion for Servers and Applications
sponsored by Dell, Inc.
PRODUCT LITERATURE: EqualLogic PS Series solutions deliver the benefits of storage consolidation in an intelligent, enterprise-class storage system that is easy to install, manage and grow.
Posted: 09 May 2008 | Published: 09 May 2008

Dell, Inc.

ISCSI SAN BOOT - Simplifying Server Operations on SANS
sponsored by Dell, Inc.
WHITE PAPER: Storage area networks (SAN) deliver consolidated storage and advanced storage management features.
Posted: 09 May 2008 | Published: 09 May 2008

Dell, Inc.

EMC Backup and Recovery
sponsored by EMC Corporation
SOFTWARE LISTING: EMC Backup and Recovery solutions enable you to strengthen your data protection, streamline backup and recovery, and meet a wide range of service levels, even for the largest data volumes.
Posted: 28 Apr 2008 | Published: 01 Apr 2008

EMC Corporation

ESG Plasmon Archive File Manger Brief
sponsored by Plasmon
WHITE PAPER: Plasmon offers its Archive File Manager to facilitate the movement of static, or persistent, data off primary storage systems-in particular.
Posted: 14 Apr 2008 | Published: 01 Jan 2008

Plasmon

Changing the Economics of Storage Consolidation
sponsored by EMC Corporation
WEBCAST: This Webcast explores ways to simplify IT through the use of IP storage consolidation solutions. View this presentation to learn how you can consolidate your storage without the cost and complexity of Fibre Channel.
Posted: 02 Apr 2008 | Premiered: Apr 2, 2008

EMC Corporation

Business Archive Management
sponsored by Plasmon
WHITE PAPER: This paper outlines a progression through a series of best practices to help you implement Business Archive Management in your organization.
Posted: 02 Apr 2008 | Published: 01 Jan 2007

Plasmon

Disk-Based Backup and Recovery: Making Sense of Your Options
sponsored by Datalink Corp
WHITE PAPER: This white paper details four enhanced data recovery (disk-based backup) architectures and provides guidance on how to determine whether or not those architectures would be an overall fit within the IT infrastructure.
Posted: 01 Apr 2008 | Published: 01 Sep 2007

Datalink Corp

Plasmon Enterprise Active Archive
sponsored by Plasmon
PRODUCT LITERATURE: The Enterprise Active Archive EAA delivers the performance and simplicity of network-attached RAID disk with the authenticity, permanence, and portability of UDO media.
Posted: 27 Mar 2008 | Published: 01 Jan 2007

Plasmon

Getting Started with Online Storage for Backup Exec
sponsored by Symantec Corporation
PODCAST: In this podcast, Symantec Product Manager Darren Niller provides a step by step overview of the process on getting started with Symantec Online Storage.
Posted: 29 Feb 2008 | Premiered: Feb 29, 2008

Symantec Corporation

Symantec Protection Network and Online Backup: An Executive Overview
sponsored by Symantec Corporation
PODCAST: In this podcast, Sr. Manager of Product Management, Mike Baldwin, provides an overview of the Symantec Protection Network and the Online Backup offering of the newly launched Symantec service.
Posted: 29 Feb 2008 | Premiered: Feb 19, 2008

Symantec Corporation

Storage Solutions That Enable Semiconductor Design for Manufacturing (DFM)
sponsored by DataDirect Networks
WHITE PAPER: EDA tools used for DFM are helping overcome the physical challenges associated with producing semiconductors based on complex designs using nanometer technologies.
Posted: 21 Feb 2008 | Published: 01 Jan 2007

DataDirect Networks

Five Steps to Reduce Your Backup Window
sponsored by Overland Storage
WHITE PAPER: Backup windows are a constant headache for storage administrators and they're constantly trying to find new ways to reduce them. This white paper explains 5 easy steps that will help make shorter backup windows a reality. Read this white paper to l...
Posted: 12 Feb 2008 | Published: 01 Feb 2008

Overland Storage

Network Appliance and VMware Virtual Infrastructure 3 Storage Best Practices
sponsored by Arrow Electronics, Inc.
WHITE PAPER: This technical report reviews the best practices for implementing VMware Virtual Infrastructures on Network Appliance fabric-attached storage (FAS) systems.
Posted: 29 Jan 2008 | Published: 01 Oct 2007

Arrow Electronics, Inc.
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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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