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RAID

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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  … 
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RAIDReports
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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): …  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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