Array Controller

The printed circuit board or system that translates computer data and commands into a form suitable for use by an array of storage disks. When the controller is integrated into the disk subsystem and provides redundancy, the disk is referred to as a RAID system (Redundant Array of Independent Disks). If the control function is provided by an external server, the disk array is referred to as JBOD (Just a Bunch of Disks—i.e., with no controller).