• RAID 6 (redundant array of independent disks)

    RAID 6, also known as double-parity RAID, uses two parity stripes on each disk. It allows for two disk failures within the RAID set before any data is lost.

  • RAID 3 (redundant array of independent disks)

    RAID 3 is a RAID configuration that uses striping and parity, but it uses a parity disk to store the parity information generated by a RAID controller instead of striping it with the data.

  • RAID 2

    RAID 2 is a technique that stripes data at the bit level using a Hamming code to detect errors.

  • RAID 0 (disk striping)

    RAID 0, also known as disk striping, is a technique that breaks up a file and spreads the data across all the disk drives in a RAID group.

RAID

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  • 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. 

  • disk cache

    A disk cache is a mechanism for improving the time it takes to read from or write to a hard disk. 

  • hard disk

    A hard disk is part of a unit, often called a "disk drive," "hard drive," or "hard disk drive," that stores and provides relatively quick access to large amounts of data on an electromagnetically charged surface or set of surfaces. 

  • hard disk drive (HDD)

    In a personal computer, a hard disk drive (HDD) is the mechanism that controls the positioning, reading, and writing of the hard disk, which furnishes the largest amount of data storage for the PC. Although the hard disk drive (often shortened to "ha...