Serial ATA RAID Quick User’s Guide
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The technology also offers fault tolerant, data redundancy for entry-level
network file servers or simply for desktop PC users wanting to continually
protect valuable data on their PC. The Serial/Ultra ATA RAID offers RAID 1
mirroring (for two drives) to protect data. Should a drive that is part of a
mirrored array fail, Serial/Ultra ATA RAID technology uses the mirrored drive
(which contains identical data) to assume all data handling. When a new
replacement drive is later installed, Serial/Ultra ATA RAID rebuilds data to
the new drive from the mirrored drive to restore fault tolerance.