Patent ID: 6854023
Filing Date: 2005-02-08
Classification: G06F

Abstract:
1. A storage device comprising: an input and output (I/O) controller for data exchange between the storage device and an external host device; a data processor in data communication with the I/O controller to service data requests made by the external host device; a cache memory in data communication with the data processor and the I/O controller to store data that is to be exchanged between the external host device and the storage device; a plurality of physical devices to store data received from the external host device; a plurality of logic devices comprising the physical devices, the data requests being made by referencing the logic devices, each logic device having an associated access frequency metric; and a memory to store the access frequency metrics, wherein the data processor is operable to assign an alias device to a base device associated with a logic device if the access frequency metric of the logic device is greater than a predetermined threshold.