Abstract: A computer system includes a plurality of server apparatus, a plurality of storage apparatus, a management computer, and a management computer. The management computer stores a server rank which represents a rank of a throughput of a server apparatus, and a storage rank which represents a rank of a throughput of a storage apparatus. Each of the plurality of server apparatuses executes a plurality of virtual machines, and stores a required server rank and a required storage rank. If it is determined that a virtual machine should be migrated on the basis of a load on the plurality of virtual machines, the management computer selects a server apparatus having a server rank equal to the required server rank as a destination server apparatus, and selects a storage apparatus having a storage rank equal to the required storage rank as a destination storage apparatus.

Abstract: The performance of a virtual machine is maintained, by migrating an appropriate target virtual machine for migration to an appropriate destination resource, in response to a load on the virtual machine. A management computer stores a server rank which represents a rank of a throughput of a server apparatus, and a storage rank which represents a rank of a throughput of a storage apparatus. Each of a plurality of server apparatuses executes a plurality of virtual machines, and stores a required server rank and a required storage rank. If it is determined that a virtual machine should be migrated on the basis of the load on the plurality of virtual machines, the management computer selects a server apparatus having a server rank equal to the required server rank as a destination server apparatus, and selects a storage apparatus having a storage rank equal to the required storage rank as a destination storage apparatus.

Abstract: Computer systems forming the computer system group each have a plurality of servers, a plurality of I/O devices, a plurality of servers, and one or more I/O switches coupled to the plurality of I/O devices, and it is possible to change the combination of the servers and I/O devices in each of the computer systems. If a fault has occurred in one of the current servers, firstly, it is judged whether or not there exists a spare server capable of taking over processing in a computer system including the server which has generated the fault. If the judgment result is negative, then a server switching process is carried out by searching another computer system capable of constructing a particular combination corresponding to the combination of the faulty server and the I/O devices allocated thereto.

Abstract: Computer systems forming the computer system group each have a plurality of servers, a plurality of I/O devices, a plurality of servers, and one or more I/O switches coupled to the plurality of I/O devices, and it is possible to change the combination of the servers and I/O devices in each of the computer systems. If a fault has occurred in one of the current servers, firstly, it is judged whether or not there exists a spare server capable of taking over processing in a computer system including the server which has generated the fault. If the judgment result is negative, then a server switching process is carried out by searching another computer system capable of constructing a particular combination corresponding to the combination of the faulty server and the I/O devices allocated thereto.

Abstract: Collectively predicting input operations for plural operation object items (subwindows) belonging to a same window. A proposal window PG stores in a statistics information database and manages information about the input entity and an operation object of an input operation accepted from a user, and a window to which the operation object belongs, along with transition information indicating the transition of active windows concerned in previous input operations. When an active window transitions because of an input operation accepted from the user, it searches the statistics information database for information that contains information about a new active window and is associated with transition information matching the transition of active windows concerned in previous input operations.

Abstract: Collectively predicting input operations for plural operation object items (subwindows) belonging to a same window. A proposal window PG stores in a statistics information database and manages information about the input entity and an operation object of an input operation accepted from a user, and a window to which the operation object belongs, along with transition information indicating the transition of active windows concerned in previous input operations. When an active window transitions because of an input operation accepted from the user, it searches the statistics information database for information that contains information about a new active window and is associated with transition information matching the transition of active windows concerned in previous input operations.

Abstract: An IT system is operated reflecting a management policy accurately. In a method for determining allocation of IT resources of an IT system shared by divisional operations of an organization based on management resources allocation among divisions in the organization, the method comprises a first and a second steps of resource allocation. In the first step, management resource allocation for each of the divisional operations is determined so as to optimize a value of an operational objective based on the assumption that IT resource allocation is equal among the divisional operations and based on the management resource allocation among the divisions of the organization. In the second step, IT resource allocation for each of the divisional operations is determined so as to optimize the operational objective value based on the management resource allocation for each of the divisional operations determined in the first step.

Abstract: Provided is a method of measuring the effect of investment in an IT system by calculating the correlation between data on profit derived from an IT system. Various time-series data collected from a business system are classified into a profit indicator (104), a business process progress status indicator (105), and a system operation status indicator (106), and the correlation between those data is found. From the correlation, a contribution ratio indicative of the influence of the IT system operation status on the profit is calculated, and the effect of investment in the IT system is measured based on this contribution ratio.

Abstract: In order to enable monitoring of a computer of a monitoring target, by two or more computers by way of a network, without increasing the load of the computer of monitoring target, the capturing process invoked on each node of the parallel computer captures performance data, the collecting process invoked on a specific node collects these captured performance data, and transmits to the relaying process on the monitoring computer. If there is a display process and a logging process invoked on the same or different monitoring computers, the relaying process distributes the performance data to them. The display process displays the performance data for part of measurement items included in the distributed performance data on the display device. The logging process stores all the distributed performance data in the storage device.