RAID

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  • The past, present and future of RAID data protection

    Seemingly everyone working in IT knows the power of RAID, and setting various RAID levels continues to be a solid foundation of a data protection strategy. But RAID efficiency is being put to the test by rapidly expanding data stores, and the storage... 

  • R.I.P. RAID?

    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 technolo... 

  • RAID rebuild

    A RAID rebuild is the data reconstruction process that occurs in a redundant array of independent disks (RAID) implementation when a hard disk drive fails. 

  • RAID controller

    A RAID controller is a device used to manage hard disk drives (HDDs) or solid-state drives (SSDs) in a computer or storage array so they work as a logical unit and the data on the drives is protected. 

  • VHDCI (Very High Density Cable Interconnect)

    Very High Density Cable Interconnect (VHDCI) is a compact 68-contact multipurpose connection type. VHDCI is optimized for applications that require high-performance but have space limitations. The technology is most commonly used in SCSI-3 hard drive... 

  • hot spare

    A hot spare, also called a hot standby, is a backup component that can be placed into service immediately when a primary component fails.  

  • RAID (redundant array of independent disks)

    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) oper... 

  • storage medium

    In computers, a storage medium is any technology (including devices and materials) used to place, keep, and retrieve data. 

  • double-parity RAID

    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 arr... 

  • disk duplexing

    Disk duplexing is a variation of disk mirroring in which each of multiple storage disks has its own SCSI controller. 

  • disk striping

    In computers that use multiple hard disk systems, disk striping is the process of dividing a body of data into blocks and spreading the data blocks across several partitions on several hard disks. 

  • parity

    In this definition, learn what parity is and find out how it works. Plus, learn how to define parity bit and parity checking. 

  • See more Definitions on RAID
About RAID

RAID data storage technology divides and replicates data among two or more hard disk drives to achieve greater levels of I/O performance, data reliability and larger data volume sizes. Find news and resources pertaining to the different RAID levels on this topic page.