Patent ID: 6769054
Filing Date: 2004-07-27
Classification: G06F

Abstract:
A method for preparing for playing a captured trace of I/O commands in a data storage environment including at least one host computer and a first storage system that is in communication with the at least one host computer and which environment includes a plurality of data storage volumes representing data stored on physical storage devices that are part of the at first data storage system and which_data storage volumes represent data stored on physical storage devices that are part of a first data storage system that is in communication with at least one host computer, the method comprising steps of:preparing an accessed trace from the first data storage system for being played as a replication of the trace of workload data on one or more data storage volumes included with a second data storage system by adjusting either the size or the number of volumes subsequent to a step of accessing and prior to a step of playing, wherein the step of accessing and playing include: accessing a trace of I/O commands from the at least one host computer to the first data storage system that are experienced on one or more data storage volumes of the plurality of data storage volumes that represent data stored on the first data storage system; and playing a replication of the trace of I/O commands on one or more data storage volumes included with a second data storage system, and wherein the playing of the trace includes analyzing the trace of I/O commands.