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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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Disk-Based Backup and Recovery: Making Sense of Your Options
sponsored by Datalink and NetApp
WHITE PAPER: Storage requirements are growing at unbelievable rates for businesses. This white paper details four disk-based data recovery architectures and provides guidance on how to determine which of these architectures would be a fit for your IT infrastructure.
Posted: 18 Oct 2007 | Published: 18 Oct 2007

Datalink and NetApp

D2D Backup and Data Deduplication: Lowering the Costs of Business Continuity
sponsored by Overland Storage
WEBCAST: This Webcast discusses the growing importance of data deduplication as an enabling technology that leverages cost-effective VTLs and other disk appliances to identify and eliminate redundant data.
Posted: 17 Oct 2007 | Premiered: Oct 17, 2007, 09:00 EDT (13:00 GMT)

Overland Storage

Percept Technology Labs: RDX Removable Archivability Study
sponsored by ProStor Systems
PRODUCT LITERATURE: This case study by Percept Technology Labs provides an overview of ProStor System's RDX removable disk product. Download this white paper to learn how RDX can safely and effectively store your critical data.
Posted: 15 Oct 2007 | Published: 01 Jul 2007

ProStor Systems

ESG: Lowering the Cost of Information Retention with Effective Disk-based Archives
sponsored by ProStor Systems
WHITE PAPER: Managing data growth is more challenging than ever, especially with recent compliance mandates. Read this white paper how to solve these challenges with an integrated archiving solution, with features that also address compliance requirements.
Posted: 15 Oct 2007 | Published: 01 Oct 2007

ProStor Systems

ProStor InfiniVault SEC 17a-4(f) Compliance Assessment
sponsored by ProStor Systems
TECHNICAL ARTICLE: Download this white paper to learn how ProStor's InfiniVault data archiving system complies with an array of government requirements, which regulate the storage, retrieval and management of electronic records.
Posted: 15 Oct 2007 | Published: 01 Sep 2007

ProStor Systems

PS Series Best Practices Deploying Microsoft Exchange Server in an iSCSI SAN
sponsored by EqualLogic, Inc.
PRODUCT LITERATURE: This Technical Report describes how to use EqualLogic PS Series storage in a Microsoft Windows Server 2003 environment.
Posted: 20 Sep 2007 | Published: 01 May 2007

EqualLogic, Inc.

Virtualized iSCSI SANs: Flexible, Scalable Enterprise Storage for Virtual Infrastructures
sponsored by Dell, Inc.
WHITE PAPER: Enterprises of all sizes are building flexible storage infrastructures using iSCSI and advanced virtualization technologies to achieve a flexible and dynamic IT infrastructure that is simple to manage and scale. Read this white paper to learn more.
Posted: 20 Sep 2007 | Published: 20 Sep 2007

Dell, Inc.

Small Form Factor (SFF) SAS - Meeting the Demanding Requirements in Specific Markets
sponsored by Xtore
WHITE PAPER: SAS technology has been proven to be the most versatile storage solution in data transfer and high performance. Read this white paper to learn about a solution that renders the necessary performance needed for your client's expanding market requirements.
Posted: 22 Aug 2007 | Published: 01 Aug 2007

Xtore

A Practical Guide to Business Continuity
sponsored by Overland Storage
WHITE PAPER: Business continuity is a big issue for IT managers. Overland Storage provides the tools and solutions for Server Message Block (SMB) IT managers to implement a complete and cost effective Business Continuity and Disaster Recovery program.
Posted: 16 Aug 2007 | Published: 01 Aug 2007

Overland Storage

Symantec Backup Exec™ System Recovery 7.0: The Gold Standard in Complete Windows System Recovery
sponsored by Symantec Corporation
WHITE PAPER: Recover from system loss or disaster in minutes. Having the proper disaster recovery plan is essential for IT administrators. This white paper highlights the top 7 new tactics for improving disaster recovery plans and meeting service level agreements.
Posted: 14 Aug 2007 | Published: 01 Aug 2007

Symantec Corporation

Symantec Backup Exec™ System Recovery 7.0
sponsored by Symantec Corporation
PRODUCT DEMO: Recover from system loss or disaster in minutes, not hours or days. Download this free trial today; a disk-based system recovery tool for bare metal restoration to dissimilar hardware, virtual environments or in remote locations.
Posted: 14 Aug 2007 | Premiered: 01 Aug 2007

Symantec Corporation

SAN/iQ: Enabling Technology for Effective VMware Deployments
sponsored by LeftHand Networks
WHITE PAPER: Many data centers these days are being virtualized with VMware. Download this white paper to learn about a solution that helps you to deploy VMware software more effectively with open iSCSI SAN components and high-availability features.
Posted: 07 Jun 2007 | Published: 01 Jun 2007

LeftHand Networks

VMWare and Celeros SANs
sponsored by Celeros
WHITE PAPER: SANs have emerged as the best solution for advanced storage requirements. Download this white paper to learn more about SANs and how one solution that is integrated with VMWare can help you better manage your storage environment.
Posted: 18 May 2007 | Published: 01 May 2007

Celeros

AIC & LSI Partner Success Story - SAS & SATA Total Cost of Ownership
sponsored by Xtore
WHITE PAPER: As server requirements grow rapidly, it's becoming increasingly critical for your clients to lower their total cost of storage ownership. Read this white paper to learn how your clients can minimize their TCO with new flexible SAS and SATA solutions.
Posted: 16 Mar 2007 | Published: 01 Mar 2007

Xtore

DigitalFilm Tree Gets Faster Post-Production in Diverse Workflows with StorNext
sponsored by Quantum Corporation
CASE STUDY: When deadlines are tight and speed is of the essence, you need data management software that makes data sharing faster and organizes effectively. Download this white paper and discover a new data management solution that does all this and more.
Posted: 28 Feb 2007 | Published: 01 Aug 2006

Quantum Corporation

Addressing Storage Management Challenges with Scalable NAS
sponsored by BlueArc Corp.
WHITE PAPER: Finding the best solution for handling your storage management challenges can be a difficult task. Download this white paper to learn about a NAS solution that addresses all of your storage and data management issues in an efficient manner.
Posted: 21 Feb 2007 | Published: 12 Dec 2006

BlueArc Corp.

WinStorage ezine: Not your father's DFS
sponsored by Brocade
EDITORIAL RESOURCE GUIDE: This edition of WinStorage ezine, from SearchWinComputing.com, will cover: Enhancements and limitations of DFS in R2, the good and bad news of the dropping price of storage and five storage management tasks that are a waste of time.
Posted: 08 Feb 2007 | Published: 08 Feb 2007

Brocade

Enabling NAS Clusters: The Silicon Storage Appliance
sponsored by DataDirect Networks
WHITE PAPER: Managing a high volume of servers is difficult and time consuming. Imagine scaling as fast as you need without expensive re-architecting. Discover a next-level solution that enables large-scale shared data clusters via an integrated SAN and...
Posted: 16 Jan 2007 | Published: 01 Jul 2006

DataDirect Networks

ETERNUS4000 brochure
sponsored by Fujitsu America, Inc.
BROCHURE: The ETERNUS4000 provides a range of management and security functions developed for enterprise class products. This midrange storage system can fit into your existing environment and deliver excellent cost performance.
Posted: 02 Jan 2007 | Published: 01 Dec 2006

Fujitsu America, Inc.

Always On White Paper for Fujitsu ETERNUS Storage System
sponsored by Fujitsu America, Inc.
WHITE PAPER: Provide uncompromised data availability that maximizes the secure operation of your databases in mission critical environments. This technical white paper provides an overview of the usage of SQL Server and Fujitsu ETERNUS storage systems.
Posted: 02 Jan 2007 | Published: 05 Oct 2006

Fujitsu America, Inc.

RAID 50 Interleave White Paper
sponsored by Xtore
WHITE PAPER: Improve RAID performance, lower the likelihood of critical drive failure and rebuild faster. Read this white paper and learn how to develop a truly Automated Tiered Storage Solution.
Posted: 01 Jan 2007 | Published: 01 Dec 2006

Xtore

Pumping up Array Performance
sponsored by Storage Decisions sponsored by CIENA Corporation
WHITE PAPER: In this keynote session, from Storage Decisions New York 2006, Ray Lucchesi, President Silverton Consulting, discusses why the key to the tuning process is a thorough understanding of your application requirements.
Posted: 07 Dec 2006 | Published: 01 Dec 2006

Storage Decisions sponsored by CIENA Corporation

Financial Services Company Relies on Cisco Storage Area Network
sponsored by Cisco Systems, Inc.
CASE STUDY: Rapidly growing AQR Capital Management invested in a Cisco SAN to protect critical financial information and to ensure disaster recovery.
Posted: 16 Oct 2006 | Published: 01 May 2006

Cisco Systems, Inc.

A Better Approach to Managing File System Data
sponsored by EMC Corporation
WHITE PAPER: File system data is growing at a staggering rate, putting pressure on data access, storage and legal requirements. This white paper explores these challenges and presents a solution for managing growing file system data.
Posted: 01 May 2006 | Published: 03 Aug 2005

EMC Corporation

Seitel Gets More Bytes per Buck with Xserve RAID
sponsored by Apple Inc.
CASE STUDY: Seitel accelerates its sales process with Xserve RAID—for significantly less money than other data storage options.
Posted: 24 Jun 2004 | Published: 01 Jun 2004

Apple 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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