Patent ID: 8332615

Claim:
A management system for managing a computer system that comprises a host computer and a storage, wherein the storage provides multiple logical volumes to the host computer by associating each logical page in the respective logical volumes with a physical page of each of multiple storage devices, the management system comprises: a microprocessor; a memory that is used by the microprocessor; a user interface that is used by the microprocessor; and a communication interface for the microprocessor to communicate with the host computer and the storage, the memory stores: first chronological information in which performance measurement values for each of the logical volumes in a predetermined time period including at least a first time period are chronologically arranged, and second chronological information in which performance measurement values for each of the logical pages in another predetermined time period including at least a second time period that is later than the first time period are chronologically arranged, the microprocessor outputs, via the user interface, at least any one or both of the first chronological information and the second chronological information stored in the memory, and the logical page, for which the second chronological information is created, is selected based on a predetermined amount which is computed from the first chronological information and indicates the degree to which the performance measurement value for each of the logical volumes deviates from an average value of the first chronological information.