Hitachi, Ltd.

Takashi Kitayama

Yuichiro Nagashima

Tatsuya Watanuki

Toshihiro Kawano

Shotaro Ohno

Shuji Ohno

Akinori Ono

Norihiro Goto

Toshiyuki Haruma

Hiroyuki Shobayashi

When shifting the condition of a pair of a main volume and a sub-volume from a split condition to a pair condition according to a request from a user, an information processing unit which can access the sub-volume is inquired whether it mounts the sub-volume or not. As a result, if a managing computer receives a notice from the information processing unit that it mounts the sub-volume, the managing computer displays a warning on its display. Thereby, data on the sub-volume can be prevented from being erased by an operation mistake of the user.

Storage system control method, storage system, information processing system, managing computer and program

Pairs are formed from a plurality of dispersed volumes and copying between the volumes is conducted by a series of remote operations from a management server. A management serverinstructs the generation of configuration setting filesto host computersselected so as to form copy pairs. If the configuration setting files are generated by host agents, the management serverinstructs copy start to a host computerhaving a primary volume. The host agentgenerates a prescribed command via a copy pair control moduleand causes a storage subsystemto execute copying between the volumes. When copying is completed, the management serveracquires the newest storage configuration information from the storage subsystemand updates configuration information DB

Storage system and setting method for storage configuration information

Host environment information of the host is acquired from an environment management section that manages the host environment information, a designation of a volume condition constituting a condition related to the logical volume is received from the user, a logical volume that conforms to the designated condition among a plurality of logical volumes is sought, an internal path which is a logical path in the storage system is constructed by allocating the logical volume thus found to any of the plurality of communication ports, and the acquired host environment information is allocated to at least one of the communication ports and logical volumes in the internal path thus constructed.

Access environment construction system and method

An automatic address distributing method, computer program and system for automatically examining addresses already assigned to terminals connected to a network without regard to the status of the existing terminals and removed terminals. An address may be assigned to a terminal by apparatus other than a DHCP server. After a Dynamic Host Configuration Protocol (DHCP) server has been started, addresses currently used in a network are examined by a duplicate-address examining unit and the status of the address are stored in an in-use-address database (DB). When a terminal makes a request for distribution of an address, the DHCP server distributes an address that is currently not used in the network. In the examination carried out by the duplicate-address examining unit, an inquiry about the entire name information controlled by a Domain Name Service (DNS) server is made to the DNS server. Results of the inquiry are also stored in the in-use-address DB. Then, a mobile-agent DB is examined for a mobile agent. An inquiry about information on movement status of mobile terminals is made to the mobile agent cataloged in the mobile-agent DB. Results of this inquiry are also stored in the in-use-address DB.

Growing community of inventors

Fujisawa, Japan

Takashi Kitayama