Hitachi, Ltd.

Fujikoki Corporation

Yuki Koizumi

Shingo Maeda

Hiroshi Suzuki

Sho Yamamoto

Takeshi Suganuma

Yoshihito Akimoto

Tatsumi Matsuda

Chieko Akiba

Shu Yanagisawa

A computer system includes a use state analysis program that acquires a use history of data in a first computer system and a program that uses the data; and a data migration program that extracts data that is able to be migrated from the first computer system to a second computer system on the basis of the use history, writes the migratable data to a first storage system and a second storage system, and migrates a program to the second computer system on the basis of a use history of the data used by the program.

Computer apparatus, computer system, and data migration method

Provided are a computer system and a program migration method capable of properly migrating programs between different computers. A first computer calculates a migration priority of each of the plurality of programs based on information which indicates weighting relative to usage of hardware resources, and operation information of hardware resources in the first computer when each of the plurality of programs is executed, and, based on hardware resource expansion schedule information which defines hardware resources of the second computer in each of a plurality of migration phases, determines migration feasibility of a program in hardware resources used in each migration phase and decides the migration phase for migrating each of the plurality of programs in order from a first migration phase of the plurality of migration phases and in order of the calculated migration priority.

Computer system and program migration method

An information processing system and operation redundantizing method are capable of preventing an operation from being adversely affected by any cause attributable to a malfunction after migration of the operation. First programs for each job step of each job for executing the operation in a system environment of a first computer, and second programs obtained by changing each first program in accordance with a system environment of a second computer to which the operation has been migrated, are stored in a storage apparatus. The second computer executes each job step of each job based on the second program; and if the second computer fails to execute a job step of any one of the jobs, the second computer issues a substitution instruction to the server apparatus to substitute for the second computer to execute the job step and the server apparatus executes the job step based on the first program.

Information processing system and operation redundantizing method

Growing community of inventors

Tokyo, Japan

Yuki Koizumi