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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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A Better RAID Strategy for High Capacity Drives in Mainframe Storage
sponsored by Oracle Corporation
WHITE PAPER: This paper demonstrates that RAID 6 is less capable to prevent data loss with today's large capacity SATA and SAS HDDs. It will also share Oracle's designs to mitigate this risk. The integrity of customers' data is in jeopardy if these large capacity SATA/SAS HDDs are simply packaged into a RAID 6 group without additional mitigation.
Posted: 21 Dec 2010 | Published: 21 Dec 2010

Oracle Corporation

Solving the Problem of Persistent Data Retention
sponsored by SGI
WHITE PAPER: Read this paper to learn the techniques for ensuring that persistent data in the enterprise today will really be available when it is needed in the future.
Posted: 17 Dec 2010 | Published: 17 Dec 2010


E-Guide: Best of 2010: The 10 Web Pages Most Read by UK-based IT Pros
sponsored by EMC Backup and Recovery Solutions
EGUIDE: This eguide is comprised of the best and most read expert articles. Read this brief guide to find out how to avoid the common pitfalls of  storage planning and how you can prepare your business for 2011.
Posted: 23 Nov 2010 | Published: 23 Nov 2010

EMC Backup and Recovery Solutions

The Architectural Advantages of Compellent Automated Tiered Storage
sponsored by Dell Compellent
WHITE PAPER: With the recent profusion of tiered storage solutions into the enterprise storage market, organizations are increasingly adopting tiering strategies to accommodate rapid data growth while controlling costs. Yet most solutions fail to maximize the potential benefits of tiered storage. Read this white paper to learn more.
Posted: 11 Nov 2010 | Published: 11 Nov 2010

Dell Compellent

Storage Magazine: September 2010
sponsored by
EDITORIAL RESOURCE GUIDE: In this month's cover story, Jacob Gsoedl explores how unstructured data became one of the top challenges in today’s organizations and highlights how file/NAS virtualization allows for future growth.
Posted: 02 Sep 2010 | Published: 02 Sep 2010

Remote/Branch Office Data Protection and System Availability
sponsored by arcserve
WHITE PAPER: There are many approaches to remote office data protection and system availability. This paper describes best practices in using available technologies for protection, recovery and availability of remote or branch office systems, applications and data.
Posted: 19 Aug 2010 | Published: 19 Aug 2010


Fluid Data Storage: A How To Guide - Intelligent storage automation for IT administrators
sponsored by Dell Compellent
WHITE PAPER: SANs are frequently difficult to set up and configure, requiring a lot of effort to perform necessary tasks. This paper explains how a Fluid Data architecture can make life as a storage admin much easier.
Posted: 02 Aug 2010 | Published: 24 Feb 2010

Dell Compellent

Uncompromising Reliability through Clustered Storage
sponsored by Isilon Systems
WHITE PAPER: This white paper describes the limitations of traditional data protection technologies and examines Isilon IQ’s revolutionary new approach to ensuring data integrity and availability in large clustered storage environments.
Posted: 26 Jul 2010 | Published: 21 Feb 2008

Isilon Systems

Presentation Transcript: The Basics of RAID
sponsored by Nexsan
PRESENTATION TRANSCRIPT: A RAID is a method of ganging up, so to speak, a bunch of disk drives, such that the availability and/or the performance is actually improved. Read this transcript for more basics of RAID.
Posted: 08 Jul 2010 | Published: 08 Jul 2010


DXi-Series Disk Backup Systems with Data Deduplication: Providing Comprehensive Data and System Integrity
sponsored by Quantum Corporation
IT BRIEFING: Access this paper now for a detailed look at the processes that operate at the solution, file system, and system hardware levels of the Quantum’s DXi®-Series disk backup solutions.
Posted: 07 Jun 2010 | Published: 25 Nov 2009

Quantum Corporation

Storage Magazine * May 2010: R.I.P RAID?
sponsored by
EGUIDE: RAID has been a mainstay of data protection for decades, but now its days may soon be numbered. In the May 2010 cover story of Storage magazine, Marc Staimer details the various issues of traditional RAID today and highlights how alternative technologies aim to address these problems.  More...
Posted: 05 May 2010 | Published: 05 May 2010

Delivering IT as a Service for Virtualized Data Centers
sponsored by Continental Resources
WHITE PAPER: Architecting a successful cloud computing infrastructure can be challenging. The secure cloud architecture offers the best products and features to create a cloud service that can realize the efficiencies of shared infrastructure while still offering the security, flexibility, resilience, and ease of management of a traditional IT deployment.
Posted: 01 Apr 2010 | Published: 01 Apr 2010

Continental Resources

Six Tips for Reducing Downtime in Travel and Transport
sponsored by Marathon Technologies
WHITE PAPER: Whether it's a security system, baggage handling application, order or vessel tracking downtime to applications supporting travel and transportation can throw off precisely timed schedules for travelers and shipments alike. This paper outlines six key tips for keeping travel and transportation logistics applications running without interruption.
Posted: 23 Feb 2010 | Published: 23 Feb 2010

Marathon Technologies

IDC White Paper: Key Criteria in Selecting an Enterprise Online PC Backup Solution
sponsored by Iron Mountain
WHITE PAPER: This paper illustrates the top–level benefits of online PC backup. Read this paper to learn more about how to choose an online PC backup solution for your mid-sized organization or enterprise!
Posted: 11 Jan 2010 | Published: 15 Dec 2008

Iron Mountain

RAID FAQ Presentation Transcript
sponsored by Nexsan
PRESENTATION TRANSCRIPT: Please read this presentation transcript, in which Andrew Burton, features editor for, interviews Greg Shulz, Founder and Senior Analyst with Storage Dial Group, about RAIDS. Shulz will provide a synopsis of the different RAID levels, their characteristics and when to use each level?
Posted: 08 Dec 2009 | Published: 07 Dec 2009


The Raw Truth about Storage Capacity
sponsored by Xiotech Corporation
WHITE PAPER: This paper examines several factors that limit the capacity of your data storage system and how they contribute to the true cost of storage.
Posted: 19 Nov 2009 | Published: 19 Nov 2009

Xiotech Corporation

Adaptec Zero-Maintenance Cache Protection
sponsored by Adaptec, Inc.
PRODUCT OVERVIEW: Adaptec Series 5Z RAID controllers with Zero-Maintenance Cache Protection (ZMCP - pronounced “zemcap”) provide maximum protection for cached data and eliminate the substantial costs and environmental impact of complex, messy and expensive Lithium Ion batteries, while improving cache protection and cache performance.
Posted: 04 Nov 2009 | Published: 04 Nov 2009

Adaptec, Inc.

On-Demand Hosting Provider SoftLayer Relies On Adaptec
sponsored by Adaptec, Inc.
CASE STUDY: When On-Demand Hosting Provider SoftLayer needed a single provider of SATA/SAS who offered the flexibility they needed, they turned to Adaptec.
Posted: 02 Nov 2009 | Published: 21 Oct 2009

Adaptec, Inc.

Adaptec Intelligent Power Management: Reducing IT Costs and Storage Power Consumption by Up to 70%
sponsored by Adaptec, Inc.
WHITE PAPER: The challenge of saving power while maintaining server performance has become a primary concern within the IT environment. But, the latest generation of Adaptec RAID controllers provides Intelligent Power Management software and supports a variety of techniques that, together, enable significant savings without compromising performance.
Posted: 29 Oct 2009 | Published: 27 Oct 2009

Adaptec, Inc.

How to Select the Correct RAID for an EqualLogic SAN
sponsored by Dell India
WHITE PAPER: One of the most important decisions that you have to make when deploying a new storage solution is what RAID type(s) to use. Read this white paper for a discussion on how to select the right RAID policy for your Dell EqualLogic™ storage area network (SAN) arrays.
Posted: 29 Sep 2009 | Published: 29 Sep 2009

Dell India

Virtualize Your End-to-End IT infrastructure and Reduce OpEx and CapEx
sponsored by Hewlett Packard Enterprise
WHITE PAPER: Many companies that have deployed server virtualization are still struggling with massive data growth, rising storage maintenance cost, and underutilized storage assets from a multitude of vendors. A virtual storage infrastructure from HP can double your capacity utilization and cut management costs in half.
Posted: 23 Sep 2009 | Published: 21 Sep 2009

Hewlett Packard Enterprise

Tucson Police Department Moves To Digital Imaging With Linear Systems And LSI 3ware RAID Controllers
sponsored by LSI Corporation.
CASE STUDY: When the Tucson Police Department decided to equip its crime scene specialists with digital cameras, it chose Linear Systems Enterprise DIMS ImageServer for the ID Section’s server and storage needs. For its RAID protection, Linear Systems chose the LSI 3ware 9650SE controller card. Read on to find out the amazing results.
Posted: 18 Sep 2009 | Published: 17 Sep 2009

LSI Corporation.

Coping with SAN Storage Frustration Caused by Server Virtualization
sponsored by NEC Corporation
WHITE PAPER: Read this paper to learn strategies to deal with server virtualization issues associated with storage networking.
Posted: 21 Aug 2009 | Published: 21 Aug 2009

NEC Corporation

HP StorageWorks MSA2000 Best Practices
sponsored by Hewlett Packard Enterprise
WHITE PAPER: This white paper highlights the best practices for optimizing the HP Storage Works MSA2000 G1 and MSA2000 G2 pre-designed for use in conjunction with other HP StorageWorks Modular Smart Array manuals.
Posted: 19 Aug 2009 | Published: 12 Aug 2009

Hewlett Packard Enterprise

THE DEFINITIVE GUIDE TO: Windows Application and Server Backup 2.0 CHAPTER 1
sponsored by AppAssure Software, Inc.
WHITE PAPER: Are you still making backups the old-fashioned way? With special chapters devoted to Exchange Server, SQL Server, virtualization, and SharePoint, you'll learn about new techniques and technologies designed to take backups out of the 1960's and into the 21st century.
Posted: 18 Aug 2009 | Published: 18 Aug 2009

AppAssure Software, Inc.
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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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