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Setting up RAID

About RAID

RAID (Redundant Array of Inexpensive/ Independent Disks) lets your computer use multiple hard drives more efficiently. Your computer supports RAID 0, RAID 1, RAID 5, and RAID 10.

RAID 0 for performance

RAID 0 lets your computer see multiple hard drives as a single drive. This type of RAID can increase file access speeds, which is important if you work with video editing, sound editing, and high-performance games. RAID 0 is also an affordable way to increase your total file storage capacity.

How it increases performance

The more drives you have in your RAID 0 array, the faster the potential drive reading performance. All hard drives have limitations on how fast they can read and write files. If half a file is stored on one RAID 0 drive and the other half on another RAID 0 drive, each drive only has to read half of the file. So, the entire file is accessed by the computer up to twice as fast (using

atwo-drive RAID 0 array). In a three-drive RAID 0 array, if the file is evenly distributed among the drives, each drive must read only a third of the file, and so on. If the entire file happens to be stored on only one of the drives, the file is accessed at the same speed as if it were on a standard hard drive setup. Dividing up files between multiple hard drives is called striping.

In the following graphic, each letter represents a unique block of data, and each column represents a separate hard drive.

RAID 0

AB

C D

EF

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