what is raid in computer

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Redundant array of independent disks

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  • What is raid?

  • Last Updated : 20 Aug, 2019 RAID, or 鈥淩edundant Arrays of Independent Disks鈥?is a technique which makes use of a combination of multiple disks instead of using a single disk for increased performance, data redundancy or both.

  • What is a RAID controller?

  • A RAID controller is a device used to manage hard disk drives in a storage array. It can be used as a level of abstraction between the OS and the physical disks, presenting groups of disks as logical units. Using a RAID controller can improve performance and help protect data in case of a crash.

  • What is RAID (Redundant Array of independent disks)?

  • RAID (redundant array of independent disks) is a way of storing the same data in different places on multiple hard disks or solid-state drives (SSDs) to protect data in the case of a drive failure. There are different RAID levels, however, and not all have the goal of providing redundancy.

  • How does RAID 0 work on hard drives?

  • When you save a file, RAID 0 breaks the data into segments called striped units. Then it spreads that data across all of the drives in your array. This is called striping, and it helps you access data faster because you have multiple drives working together to read, write, and store data.

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