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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: Double-parity RAID (redundant array of independent disks), also called diagonal-parity RAID, Advanced Data Guarding (RAID_ADG), or RAID-6, is a method of protecting against multiple storage drive failures by creating two sets of parity data on an array of hard disks. In a conventional RAID, data is stored in different places on multiple hard disks, thereby increasing the aggregate mean time between  … 
Definition continues below.
RAID Reports
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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.

Quantum Makes Enhanced Backup Real
sponsored by Quantum Corporation
PRODUCT LITERATURE: Quantum Corp. has announced general availability of its DX30 - a disk-based backup solution that emulates a tape library.
Posted: 12 Jan 2004 | Published: 01 Jan 2003

Quantum Corporation

Enhanced Backup
sponsored by Quantum Corporation
WHITE PAPER: This paper covers a number of issues that must be considered when evaluating the use of disk in a backup architecture.
Posted: 12 Jan 2004 | Published: 01 Apr 2003

Quantum Corporation

Why Do We Like the Quantum DX30 so Much?
sponsored by Quantum Corporation
WHITE PAPER: Dorian Cougias, CEO of Network Frontiers and the author of "The Backup Book: Data Protection from Desktop to Data Center" discusses the pros and cons of disk-based backup technologies.
Posted: 20 Aug 2003 | Published: 01 Aug 2003

Quantum Corporation

Enhanced Backup: Why Quantum DX30?
sponsored by Quantum Corporation
WHITE PAPER: The job of the Quantum DX30 is to provide enhanced backup protection to the vast majority of those business applications that cannot justify being re-engineered for mirroring and/or remote replication.
Posted: 27 Feb 2003 | Published: 01 Jan 2003

Quantum Corporation

Enhanced Backup Solution
sponsored by Quantum Corporation
WHITE PAPER: The scope of the digital data protection challenge faced by most organizations will continue to grow as an increasing percentage of the data these organizations depend upon is digitally originated.
Posted: 26 Jan 2003 | Published: 02 May 2002

Quantum Corporation
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RAID DEFINITION (continued): …  failures (MTBF) and improving the fault-tolerance. In the approach known as RAID-4, the number of bits in data blocks on multiple disks is added up, and the total is kept on a disk called the parity disk. If a drive fails, data recovery is facilitated by using the bits stored on the parity disk and bits remaining on the surviving drives. In RAID-5, the parity information is stored diagonally across all the disks in the RAID set. If a single drive fails, the original data is calculated from the parity information remaining on the surviving disks in the set.Because hard disk storage capacity continues … 
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