Hitachi, Ltd.

Akihiko Sakaguchi

Fuming Liu

Nobuo Beniyama

Hiroshi Nojima

Hiroshi Yamakawa

Masaaki Iwasaki

Shinji Fujiwara

Yohsuke Ishii

Yasuo Yamasaki

Tomohiro Hanai

Manabu Obana

Yuichiro Nagashima

Yosuke Kasai

In a storage management system in which a storage apparatus is connected via a network to a volume allocation management server having a performance requirement analysis unit, a volume allocation unit, and a volume performance determining unit, the performance requirements of a business application using volume-allocating data and the performance characteristics of a volume serving as a data storage destination are determined, and on the basis of the resulting information, a volume which satisfies the performance requirements is selected as the data storage destination.

Volume selection method and information processing system

The present invention provides a data migration management apparatus that can easily create a re-execution task for re-executing an error-terminated data migration task, and also can increase the possibility of the re-execution task being successful. In a case where a data migration from a migration-source volume to a migration-destination volume fails, the management apparatus uses the information of the failed task to create a re-execution task. The management apparatus changes the configuration of a volume pair as necessary. The management apparatus manages the failed task in association with the re-execution task.

Data migration management apparatus and information processing system

A volume group comprising one or a plurality of logical volumes is set. A coexistence avoidance volume group having different array groups can be set to the volume group. Upon execution of preset volume search criteria, a logical volume is specified by carrying out a search in which are excluded array groups to which logical volumes in the coexistence avoidance volume belong.

Data migration method and information processing system

Provided is a capacity monitoring method used for a computer system including one or more application computers, one or more storage systems, and a management computer. The storage system includes a physical disk and a disk controller. In the capacity monitoring method, a storage area of the physical disk belongs to a storage pool, the storage system provides a volume, and the management computer monitors a used capacity of the storage pool, judges whether or not a storage capacity required for operating the application computer for a predetermined time period is present in the storage pool based upon an increasing speed of the used capacity of the storage pool to be monitored, and executes a predetermined process operation when the storage capacity required for operating the application computer for the predetermined time period is not present in the storage pool. Accordingly, the storage pool is properly operated and managed.

Storage capacity management system in dynamic area provisioning storage

A cache control apparatus is provided in a computer system including an access source and a storage apparatus. This device, based on I/O status information, which is information denoting the I/O status in accordance with an I/O command from the access source, determines whether or not the I/O performance from the access source drops. In a case where the result of this determination is affirmative, the cache control apparatus changes a cache utilization status specified from cache utilization status information, which is information denoting the cache utilization status related to a cache area, to a cache utilization status that improves I/O performance.

Cache control apparatus and method

Provided is a capacity monitoring method for use with a computer system including one or more application computers, one or more storage systems, and a management computer. The storage system includes a physical disk and a disk controller. In the capacity monitoring method, a storage area of the physical disk belongs to a storage pool, the storage system provides a volume, and the management computer monitors a used capacity of the storage pool, judges whether or not a storage capacity required for operating the application computer for a predetermined time period is present in the storage pool based upon an increasing speed of the used capacity of the storage pool to be monitored, and executes a predetermined process operation when the storage capacity required for operating the application computer for the predetermined time period is not present in the storage pool. Accordingly, the storage pool is properly operated and managed.

A data migration management apparatus continuously monitors and stores the utilization statuses of a migration-source storage area and a migration-destination storage area, and uses the information to set up a data migration. An information management unit collects information related to the storage configuration and information related to performance from respective storage apparatuses, and stores the information in a storage unit. In a case where a data migration plan is to be set, a performance information provision unit provides, to a user computer, variations in the utilization statuses during a predetermined period for each of a migration-source volume and a migration-destination array group.

Data migration management apparatus and management method

Provided is a storage system for solving the problem in that, when the registration of a nonexistent user is deleted, only a system administrator can access files that the user left, so that a load placed on the administrator increases at the time of an audit. The authentication program for permitting a user, who is attempting to log in to a storage system, to access a file recorded in the storage system, the program including: a first step for receiving a user name and a password from the user; a second step for referring to a validity term corresponding to a pair of the user name and the password recorded in the storage system; and a third step for permitting access by the user to a file corresponding to the validity term based on a result of the second step, the first to third steps being executed by a processor.

Method and program for user authentication in a network storage system

When communications among a plurality of processors employed in a network storage system are required, any of the processors initiating a communication on the transmission side issues a request to an I/O processing apparatus, which is used for controlling a disk unit and a disk cache common to the processors, in order to allocate an area in the common disk cache as a communication buffer. At such a request, the I/O processing apparatus allocates a specific area in the common disk cache as a communication buffer and gives a notice of the allocation to the requesting processors on the transmission side. Receiving the notice, the transmission-side processors write data to be transferred into the specific area of the disk cache and, then, the reception-side processors fetch the transferred data from the specific area.

Inter-processor communication method using a shared cache memory in a storage system

A method of data exchange between volumes without using any unnecessary resource in a storage system includes allocating cache areas for data exchange on a memory, determining the location of data to be exchanged, reading out data from the determined location in source and destination volumes and storing data in their respective caches, and writing data stored in the cache to thus determined location of the volume different from the one that the data was read out.

Method for exchanging data between volumes of storage system

This invention enables a file to be accessed even during replication while maintaining its consistency. The replication is done among a plurality of distributed storage devices, a file is searched, in response to an access request from a client machine #, from GUID management databaseseach of which stores a relationship between a GUID of a file stored in a storage device #(#) and a device ID of a storage device containing an original file. When the storage device #does not have the demanded file, a device ID (#) of a storage device containing its original file is searched from the GUID management database based on a GUID of the file C, and the file C demanded by this the storage device #is accessed.

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Tachikawa, Japan

Akihiko Sakaguchi