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Massive Array of Idle Disks
Technology that spins up hard disks in the storage equipment when access is required and spins down the disk when there is no access. This method cuts power consumption by spinning down the disks. This technology is highly energy-efficient if applied in the storage equipment that has hard disks that are infrequently accessed and disks with no access for long periods of time. It is mainly used for backups of data at regular intervals.
MAID is gaining attention as technology for green IT and green data center.