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A facility which is employed on most mainframes and some minicomputers. When a seek has been initiated the system can free the path from a disk drive to a controller for use by another disk drive, while it is waiting for the required data to come under the read/write heads (latency). This facility usually improves the overall performance of the I/O subsystem.
ITIL. Glossaries © Crown Copyright Office of Government Commerce. Reproduced with the permission of the Controller of HMSO and the Office of Government Commerce
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