Hitachi, Ltd.

Naoyuki Matsunaga

Takafumi Nogami

Shigehiro Hatakeyama

Takafumi Jinsenji

Takahiro Morimoto

Toshio Hata

Nobuo Beniyama

Takato Kusama

A method for moving a virtual machine is provided which considers an input/output between array groups and virtual machines after being moved. The computer system includes a physical server executing the virtual machines, a storage device having array groups, and a management server that manages a link between the virtual machines and the array groups. The computer system is characterized in that an estimated I/O volume of the virtual machine after being moved is calculated and that, if the estimated I/O volume exceeds the maximum I/O volume of the array group connected to the moved virtual machine, a search is made to find an array group whose maximum I/O volume is smaller than the estimated I/O volume.

Storage management method and management server

A computer network comprising a monitoring apparatus and a plurality of servers, wherein the servers respectively have a plurality of software programs, and a data file for storing error analysis information to be utilized for analysis of the cause of an error upon occurrence of error, for each software program. Further, the servers respectively have a function to transmit an error notifying message including a software identifier of a software program executed upon occurrence of error to the monitoring apparatus. The monitoring terminal apparatus has a function to instruct at least one server, specified based on the software identifier included in the error notifying message, to save error analysis information, in response to the error notifying message received from any one of the servers.

Distributed data processing system and error analysis information saving method appropriate therefor

Growing community of inventors

Yokohama, Japan

Naoyuki Matsunaga