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RAID 1 - Explanation and Solutions |
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RAID 1: Also Known As Mirroring
RAID 1 is a method generally known as mirroring. The RAID 1 Controller divides the HDDs in the array into two groups, and writes identical data onto HDDs in each group. Data is readout from either group. (Fig. 3) In case of an HDD failure, it is possible to recover from the other functioning HDD. RAID 1 is popular for its simplicity, making it a frequently used method. Shortcomings are it halves the actual capacity of the HDD, and provides no improvement in speed. |
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