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RAID is a method of storing data on multiple hard disks. Through the “magic” of the disk array, all of the individual disks appear as a single disk to the operating system. Large arrays can be split into smaller logical disks, that can be any size up to the total amount of disk space. Depending on exactly how the data is spread across the multiple disks determines the relative speed and security of the data on the disks.
Back in the old days when large (750MB) hard disks were relatively expensive (say $1200 US) and smaller disks (100MB) were relatively inexpensive (maybe $130), somebody figured out… [Continue reading]
