Why is RAID So Important for Databases?

A good server design has no, or very few, single points of failure. One of the most common server component that fails, are disks. So data redundancy becomes essential to recoverability. Redundant Array of Independent/Inexpensive Disks (RAID) is a disk system that provides better fault-tolerance by making use of redundancy of disk(s). Read the entire updated article here Suprotim Agarwal, MCSD, MC

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性能向上のためにRAIDを導入しましょうな記事。ランダムアクセスやでかいボリュームなら5か10、テンポラリDBやログ用途DBなら0か1か10が良い。