Fujitsu Corporation

Osamu Kimura

Kazuo Nakashima

Mikio Ito

Takashi Kawada

Hiroshi Kobayashi

Koji Uchida

Chikashi Maeda

Riichiro Take

Yuuji Hotta

Akihito Kobayashi

Hirotaka Hara

Yoshihide Nomura

Masaru Shimmitsu

Tadaomi Kato

Koki Kato

Koji Yamaguchi

Mimiko Hayashi

A control device includes a processor. The processor is configured to receive a write request to write content data. The processor is configured to divide the content data into leading first data and subsequent second data. The processor is configured to write the first data to a first storage resource in a first storage group among a plurality of storage groups having operating rates different from each other. The first storage group has a first operating rate higher than operating rates of any other storage groups. The processor is configured to write the second data to a second storage resource in a second storage group. The second storage group has a second operating rate lower than the first operating rate. The processor is configured to activate, in parallel with the writing of the first data, the second storage resource when the second storage resource is in a non-operating state.

Control device and storage system

A disk array apparatus has a plurality of the same type of disk array units. Each of the disk array units has a plurality of storage areas in each of which firmware for allowing the disk array unit to operate is stored. When the disk array apparatus recognizes that a first disk array unit has been disposed therein, it compares a version number of firmware stored in each storage area included in the first disk array unit with a version number of firmware stored in each storage area included in a second disk array unit that currently operates in the disk array apparatus. If these version numbers are the same, the disk array apparatus makes a storage area in which firmware executed by the first disk array unit is stored conform to a storage area in which firmware executed by the second disk array unit is stored.

Disk array apparatus, and control method and control program recording medium

A disk array device having a plurality of hard disk units has a large-capacity memory mounted on a controller module which controls the whole device. The large-capacity memory has a system area managed by an OS and a cache area serving as a cache memory, and in addition, it has a table area which stores management/control information of the device and whose area size is changeable at an arbitrary instance. Therefore, it is possible to change the table area according to the state of the device in an active state without ON/OFF of a power source, so that an area not in use in the table area can be released for use as the cache memory. This makes it possible to appropriately varying the sizes of the table area and the cache area in an active state while the device is in operation, thereby realizing effective use of the large-capacity memory.

Disk array device memory having areas dynamically adjustable in size

A disk array device has: a CM separating part that, when abnormality occurs in a CM, separates the CM in which the abnormality has occurred from a storage system after write of CM operation information data to a hard disk is completed; and communication path reconfiguring parts that reconfigure communication paths between the CM in which the abnormality has occurred and DAs. When abnormality occurs in the CM, the communication paths between the CM and the DAs are reconfigured, and after the CM operation information data of the CM is written to the hard disk, the CM is separated. Therefore, the write processing is not interrupted halfway, so that the useful operation information data regarding the cause of the problem occurrence can be written to the hard disk having a sufficient storage area.

Collection of operation information when trouble occurs in a disk array device

An event management apparatus collects event data which an event extraction unit of each business system extracts on the basis of event extraction definition, and performs queuing to an event queue. An event relation unit makes groups of event data in units of business data, and performs the relative processing of business data to store the event data in an event management DB. When retrieval conditions are inputted from a user terminal, the output unit retrieves the event management DB according to the retrieval conditions, and outputs and displays relation between business data on the user terminal in a tree form.

Apparatus and method for business process tracking and business process tracking program, and recording medium thereof

A disk time-sharing apparatus is constructed by a disk apparatus having disk drives, an input/output request unit for issuing an input/output request to the disk apparatus, and an input/output scheduling unit. The input/output scheduling unit forms input/output groups obtained by grouping inputs/output sources to/from the disk apparatus, defines a ratio of time during which each input/output group uses the disk apparatus, and decides quanta (allocating time) &tgr; to &tgr; during which each input/output group can use the disk apparatus continuously on the basis of the defined time ratio. When input/output requests are received to the disk apparatus from a plurality of input/output groups, a time-sharing for using the disk apparatus by switching the allocating time &tgr; to &tgr; sequentially among the competing input/output groups is performed.

Disk-time-sharing apparatus and method

Growing community of inventors

Kawasaki, Japan

Osamu Kimura