Investing in a RAID
RAID stands for Redundant Array of Independent (or Inexpensive) Disks, and often requires a separate controller card for management. The primary purpose of a RAID is to combine several physical devices into a single logical unit for the sake of redundancy and performance.
This is especially relevant to our interests. Carnegie Mellon University published a study in 2007 on hard drive failure rates. They found that hard drives fail at about 3 percent per year. Further more, they found that drive type and interface contributed little to disk longevity, and that hard drives do not reflect a tendency to fail early as was commonly accepted. These findings were largely corroborated by a parallel study released the same year by Google. ...
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