Hitachi, Ltd.

Hitachi Ulsi Engineering Corp.

Shunji Takubo

Masataka Innan

Masashi Egi

Hiroaki Fujii

Ken Naono

Nobutoshi Sagawa

Tadashi Ohta

Susumu Yamaga

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.

Computer system and control method therefor

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.

Server failover control method and apparatus and computer system group

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.

Device and method for assisting input operations

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.

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Kodaira, Japan

Shunji Takubo