Patent ID: 7822847
Filing Date: 2010-10-26
Classification: G06F,H04L

Abstract:
1. A storage management method used in a storage management server connected to at least one storage subsystem and at least one server via network, the method comprising the steps of: collecting information on connection relationship between resources on an I/O path from each of applications in the server to a logical volume used by the applications as configuration information from the server and the storage subsystem; collecting performance information on each of the resources on the I/O path from each of the applications in the server to the logical volume used by the applications from the server and the storage subsystem; inputting a setting modification definition for balancing an I/O load of the storage subsystem, the setting modification definition being configured to eliminate a predicted bottleneck that may occur between the server and the storage subsystem, the setting modification definition defining movement of the logical volume from a first RAID Group to a second RAID Group; identifying a plurality of first applications using the first RAID Group from applications, whose I/O load is reduced on the I/O path after the movement of the logical volume based on the configuration information, as candidate applications whose I/O amount can be increased, and displaying the first application applications in a first window; checking the performance information of a plurality of first resources related to the plurality of first applications to the first RAID Group on the I/O path each including at least one of server side ports and storage side ports, by determining whether a utilization ratio of the server side ports and storage side ports exceeds a predetermined value or not on a basis of the first applications; specifying a second application from the plurality of first applications as a target application whose I/O amount can be increased if none of the utilization ratio of the server side ports and storage side ports exceeds the predetermined value as a result of the performance information of the first resources on a first I/O path from the first second application; identifying second resources related to the second application from the server to the storage subsystem, and determining whether the second application accesses a third RAID Group for data; determining whether or not any of the second resources on a second I/O path from the second application to the first RAID Group and the third RAID Group will have a corresponding I/O load that exceeds a processing-enabled amount; identifying, when it is determined that the second application accesses the third RAID Group for data, a third application from the applications that use the third RAID Group; determining a change in I/O amount for the third application due to the move of the logical volume from the first RAID Group to the second RAID Group; and specifying, before the movement of the logical volume is executed, the third application as an affected application whose I/O performance is lowered by an increase of I/O amount of the second application.