Patent ID: 7047360
Filing Date: 2006-05-16
Classification: G06F

Abstract:
1. In a computer system comprising a plurality of storage apparatuses and a plurality of computers, said plurality of storage apparatuses including storage apparatuses in which a first logical volume and a second logical volume different from each other are defined, respectively, said plurality of computers including a first computer and a second computer, wherein: a first condition is satisfied when said first computer is performing processing using said first logical volume, and when an association which represents that data written into said first logical volume is also written into said second logical volume is established between said first logical volume and said second logical volume; and a second condition is satisfied when said association is no longer established and when said second computer performs processing using said second logical volume, a method of adjusting the performance of said second logical volume comprising: a performance adjustment timing detecting step, responsive to a failure in satisfying a performance condition that the performance of said second logical volume in said first condition or in said second condition is equal to or higher than the performance of said first logical volume in said first condition, for detecting a timing at which a performance adjustment is made to modify a configuration in said storage apparatus in which said second logical volume is defined, to satisfy said performance condition; a performance value acquiring step, responsive to the detected timing, for acquiring a first performance value related to said first logical volume and a second performance value related to said second logical volume; a performance degradation predicting step for comparing said acquired second performance value with said acquired first performance value to predict or determine whether or not said performance condition is established; a configuration modification processing searching step, responsive to a failure in establishing said performance condition, for searching configuration modification processing which modifies the configuration in said storage apparatus in which said second logical volume is defined to establish said performance condition; and a performance adjusting step for performing one or more of configuration modification processing in the result of the search conducted at said configuration modification processing searching step.