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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: What is RAID?RAID (redundant array of independent disks; originally redundant array of inexpensive disks) is a way of storing the same data in different places (thus, redundantly) on multiple hard disks. By placing data on multiple disks, I/O (input/output) operations can overlap in a balanced way, improving performance. Since multiple disks increases the mean time between failures (MTBF), storing  … 
Definition continues below.
RAID Reports
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RAID FAQ
sponsored by Nexsan Technologies
PODCAST: Twenty years old, RAID has become a standard and transparent feature. What is RAID, and how does this technology fit into the storage landscape? This expert FAQ podcast answers common questions about RAID, explores the different levels of this technology, and overviews the implementation stages and obstacles.
Posted: 25 Nov 2009 | Premiered: 25 Nov 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


If it’s Just a Disk … Why the Reliability Gap Between Storage Vendors?
sponsored by Nexsan Technologies
WHITE PAPER: If all storage array vendors buy disk drives from the same small set of disk manufacturers then why is there such a big reliability gap between storage vendors?
Posted: 18 Nov 2009 | Published: 18 Nov 2009


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


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: 02 Nov 2009


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: 29 Oct 2009


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


Storage Virtualization with the HP StorageWorks
sponsored by Hewlett-Packard Company
WHITE PAPER: The most powerful application of virtualization today is at the storage system level. With the HP StorageWorks Enterprise Virtual Array and HP StorageWorks SAN Virtualization Services platform, organizations can take advantage of the many benefits of virtualization with a solution designed specifically for open systems.
Posted: 24 Sep 2009 | Published: 24 Sep 2009


E-Guide: An Overview of Scale-Out Network Attached Storage
sponsored by Hewlett-Packard Company
WHITE PAPER: This SearchStorage.com E-Guide provides an overview of the benefits of Scale-out storage and includes guidance on how to create an RFP when you are ready to invest in a NAS system.
Posted: 23 Sep 2009 | Published: 23 Sep 2009


Virtualize Your End-to-End IT infrastructure and Reduce OpEx and CapEx
sponsored by Hewlett-Packard Company
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: 23 Sep 2009


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: 18 Sep 2009


Overcoming problems with RAID
sponsored by Dell, Inc. and Intel
WEBCAST: In this expert webcast, learn how to recognize and deal with common RAID issues in storage arrays.
Posted: 27 Aug 2009 | Premiered: 27 Aug 2009


Matching Server Virtualization with Advanced Storage Virtualization
sponsored by Hewlett-Packard Company
WHITE PAPER: The white paper explains the benefits of matching server virtualization with advanced storage virtualization using HP LeftHand SAN and VMware Infrastructure.
Posted: 26 Aug 2009 | Published: 26 Aug 2009


Windows Server and Storage eBook, Ch 3 - Assess Your Data Center Storage Needs
sponsored by Dell, Inc. and Intel
EBOOK: Servers play a crucial role in daily enterprise operations. But even the most powerful and resilient servers are useless without adequate storage. Storage solutions contain the operating systems, applications and virtual images needed to operate every server. This eBook chapter will help you better understand your data center storage challenges.
Posted: 11 Aug 2009 | Published: 11 Aug 2009


VMware Fault Tolerance Recommendations and Considerations on VMware vSphere 4
sponsored by HP, Intel, & VMware
WHITE PAPER: As dependencies on computing increase, ensuring that applications are highly available becomes more critical. This paper gives VMware fault tolerance recommendations and considerations on VMware vSphere 4.
Posted: 10 Aug 2009 | Published: 10 Aug 2009


What Is New in VMware vSphere 4: Storage
sponsored by HP, Intel, & VMware
WHITE PAPER: With the launch of vSphere 4, VMware introduces a new version of the hypervisor, ESX 4.0 and the management interface, vCenter. Some key benefits offered by this release are greater resource efficiency, management control and freedom of choice for virtual datacenter storage resources and connectivity options.
Posted: 10 Aug 2009 | Published: 10 Aug 2009


Tech Report: Open-Source Storage Explained
sponsored by Sun Microsystems, Inc.
EGUIDE: This Tech Report will dive deep into the capabilities as well as challenges with open-source storage, as storage pros continue to seek information regarding this increasingly popular storage trend.
Posted: 23 Jul 2009 | Published: 23 Jul 2009


Deduplication for the Enterprise: Six Steps to Optimal Results
sponsored by SEPATON
JOURNAL ARTICLE: Data deduplication is a must-have technology for today's enterprises. However, there are a wide range of choices and issues to be considered. This article covers six steps an organization can take to make sure implementing a deduplication technology is a smooth process.
Posted: 20 May 2009 | Published: 20 May 2009


Victaulic Speeds Backup and Restores, Cuts Capacity with SEPATON VTL and Data Deduplication
sponsored by SEPATON
CASE STUDY: Facing exponential data growth and lengthening backup times, Victaulic Company's tape backup systems could no longer provide the performance or capacity they needed for efficient data protection. For a cost comparable to tape, Victaulic Company implemented a SEPATON S2100-ES2 virtual tape library (VTL) with DeltaStor data deduplication software.
Posted: 19 May 2009 | Published: 19 May 2009


StorExpress: Integrating Solid State Storage in a PCI Express Clustering Interconnect
sponsored by Fusion-IO
WHITE PAPER: Direct PCI Express (PCIe) attached flash storage offers unparalleled performance levels and vastly outperforms SAS/SATA-attached flash storage solutions. However, such PCIe attached flash storage cards have many restrictions. Read this white paper to learn about an enhanced PCIe flash storage solution from Dolphin, in partnership with Fusion-IO.
Posted: 12 May 2009 | Published: 12 May 2009


Backup and Recovery for Microsoft Exchange Server - Data Domain Deduplication Storage Best Practices Guide
sponsored by Data Domain
WHITE PAPER: In many companies, Microsoft Exchange is now commonly viewed as a mission-critical application. Protecting Exchange information is critical and backup is still the primary method used. This paper focuses on the traditional backup and recovery practices for Microsoft Exchange Server along with solutions from Data Domain.
Posted: 08 May 2009 | Published: 08 May 2009


Northern Storage Suite: Return On Investment
sponsored by Northern Parklife
WHITE PAPER: Northern Storage Suite delivers financial returns in three ways: by improving utilization of existing resources, by reducing the pace of hardware investment and by reducing the need for administrative intervention in data management. This paper provides details on these three benefits and how this storage solution can benefit your organization.
Posted: 10 Apr 2009 | Published: 10 Apr 2009


ioDrive, Changing the Way You Code
sponsored by Fusion-IO
WHITE PAPER: With read/write speeds that are very close to most expensive models in the industry, the ioDrive's price/performance ratio will leave you saying, "WOW!" Read this white paper for more information on this paradigm-shifting data storage appliance.
Posted: 20 Mar 2009 | Published: 20 Mar 2009


Secrets to Successful DR and Continuity Planning
sponsored by Compellent
WEBCAST: This webinar reviews several enabling technologies that greatly simplify Disaster Recovery and business continuity like Silver Peak's WAN optimization solution. You'll also hear how OfficeWare was able to implement an effective and fully verified DR solution on a limited budget.
Posted: 11 Mar 2009 | Premiered: 11 Mar 2009


3 Steps to Eliminate Unused Capacity
sponsored by Compellent
WEBCAST: In this demo, Compellent technology professionals explain and demonstrate their dynamic capacity and thin provisioning techniqies, how they reduce TCO and energy costs, and dramatically eliminate unused storage space.
Posted: 11 Mar 2009 | Premiered: 11 Mar 2009

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RAID DEFINITION (continued): …  data redundantly also increases fault tolerance. Ask your RAID questions at ITKnowledgeExchange.comA RAID appears to the operating system to be a single logical hard disk. RAID employs the technique of disk striping, which involves partitioning each drive's storage space into units ranging from a sector (512 bytes) up to several megabytes. The stripes of all the disks are interleaved and addressed in order.In a single-user system where large records, such as medical or other scientific images, are stored, the stripes are typically set up to be small (perhaps 512 bytes) so that a single record … 
RAID definition sponsored by SearchStorage.com, powered by WhatIs.com an online computer dictionary
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