Patent ID: 6484234
Filing Date: 2002-11-19
Classification: G06F

Abstract:
A method for destaging data from a cache to at least one data storage device of a data storage system having a controller that controls data flow between the cache and the at least one data storage device via a bus that is shared by at least one system component in addition to the controller and the at least one data storage device, the storage device having a plurality of tracks, the method comprising steps of:(a) establishing a communication link between the controller and the at least one data storage device via the bus; and (b) using the communication link established in step (a) to destage data over the bus from the cache to at least two non-contiguous storage locations among the plurality of tracks of the at least one data storage device, wherein the at least two non-contiguous storage locations are located on different tracks of the plurality of tracks, and wherein data is destaged without overwriting at least one storage location between the at least two non-contiguous storage locations and without breaking the communication link.