Patent ID: 6047353
Filing Date: 2000-04-04
Classification: G06F

Abstract:
A storage system comprising:a memory;a plurality of storage devices coupled to a disk controller which is further coupled to said memory;a host trace buffer disposed within said memory;a device statistics table disposed within said memory; anda host controller coupled to said memory and serving as a communications interface between a host computer and said storage system, said host controller responsive to a host trace command for recording, in said host trace buffer, information about said host, said host controller further responsive to said host trace command and for recording, in said device statistics table, statistics information pertinent to issuance of said host trace command, said device statistics table includes a plurality of sub-tables where each sub-table corresponds to one of said plurality of storage devices and includes a plurality of records and where each record comprises a utility identification entry for identifying an application program running on said host computer which issued said host trace command, a time stamp entry corresponding to the time when said host trace command was issued to a particular device associated with said record, and a host identification corresponding to said identity of said host computer which issued said host trace command.