Patent ID: 6341317
Filing Date: 2002-01-22
Classification: G06F

Abstract:
A method of managing a log of information in a computer system including a host computer and an intelligent storage system that is coupled to the host computer and stores data accessed by the host computer, the computer system including a plurality of logical volumes of data that are visible to the host computer and the storage system and that are perceived by the host computer as comprising a plurality of raw storage devices, the storage system including at least one physical storage device and at least one mapping layer that maps the plurality of logical volumes to the at least one physical storage device, the method comprising a step of:(A) creating the log to include information concerning at least one input/output (I/O) operation passed from the host computer to the intelligent storage system, the information including a first component of information relating to aspects of the at least one I/O operation controlled by the host computer and a second component of information relating to aspects of the at least one I/O operation controlled by the intelligent storage system.