Redundant Array of Inexpensive Nodes

In computer storage circles, the primary mechanism for providing reliable storage of data is Redundant Array of Independent Disks (RAID). Certain RAID configurations use multiple physical hard disks in to limit the chances that a hardware failure will result in a loss of data. For example, if you have 2 drives in a RAID1 mirror configuration, data is written to both drives so either of the two drives (but, of course, not both) can fail and the computer can still operate.
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