PERFORMANCE ANALYSIS DEVICE AND METHOD, AND STORAGE MEDIUM

摘要

[Problem] To provide a performance management method and device, and a storage medium, which are capable of simplifying performance management of a storage device in a computer system in which inter-device active multiplexing technology is introduced. [Solution] Usage rates are respectively acquired for each resource which are required for a read process of each logical volume of each storage device. On the basis of the acquired usage rates for each resource, the degree of increase of the usage rate of each resource in other storage devices for a postulate that one of the storage devices has been suspended is respectively estimated while sequentially changing the storage device which is postulated to be suspended. On the basis of the result of the estimation, the usage rates of each of the resources within the other storage devices for the postulate that one of the storage devices has been suspended are displayed.