Fujitsu Corporation

Fujitsu Limied

Yusuke Inai

Hiroaki Sato

Kazuhiko Ikeuchi

Hideo Takahashi

Hidejirou Daikokuya

Mikio Ito

Norihide Kubota

Yoshihito Konta

Motohiro Sakai

Eisaku Takahashi

Kenji Uchiyama

Koutarou Sasage

Yasutake Sato

Naoyoshi Toshine

Yukihiro Yoshiya

Hiroaki Nishijo

Masaru Shimmitsu

Nobuyuki Kikuchi

Tadashi Hirano

Tsuyoshi Nakagami

Masami Ikeno

Yuuji Noda

Yukio Taniyama

Kazuki Sasaki

A storage system includes a storage apparatus, a control apparatus, and a host apparatus. The storage apparatus includes a recording medium. The control apparatus includes a detection unit and a control unit. The detection unit detects whether a recording medium loaded in the storage apparatus is a stand-alone-only recording medium that is used in a stand-alone mode. When the recording medium is the stand-alone-only recording medium, the control unit registers a physical volume of the stand-alone-only recording medium as a logical volume and automatically switches the operation mode of the control apparatus to the stand-alone mode.

Storage system and control apparatus

In a storage system, a processor accepts designation of export data that is to be written to a first portable record medium. The designated export data is divided into first export data and second export data. The first export data is already in the storage apparatus, while the second export data is still in second portable record mediums. The second export data is read out of the second portable record mediums and entered to the storage apparatus. The processor detects the current amount of the first export data in the storage apparatus, as well as the current amount of the second export data still unread from the second portable record mediums. The processor determines when to start writing the export data to the first portable record medium, based on the current amount of the first export data and the current amount of the second export data.

Storage system, storage control apparatus, and storage control method

A storage system includes plural drive devices and a control device. Each of the plural drive devices reads or writes data from or to a portable recording medium. The control device performs a parallel process in which a first process and a second process are performed in parallel. The first process is to write specified data to a first portable recording medium via a first drive device of the plural drive devices. The second process is to write the specified data to a second portable recording medium via a second drive device of the plural drive devices. The control device cancels, upon completion of either one of the first process and the second process, the other one of the first process and the second process.

Storage system and storage control method

A control apparatus connectable to a memory unit for storing data, for controlling a first tape writing unit including a plurality of first tapes and a second tape writing unit including a plurality of second tapes so that the first and second writing units write same data stored in the memory unit to one of the first tapes and one of the second tapes, respectively, has an obtaining unit for obtaining a progress value indicating a progress of writing data into the one of the second tapes upon completely writing the data into one of the first tapes and a controller for controlling the first and the second tape writing units so that the first and the second writing unit change the writing tapes to another of the first tapes and another of second tapes when the progress value being not more than a predetermined value.

Control apparatus, method of controlling apparatus and computer-readable recording medium

A tape library control apparatus includes a storage for storing configuration information, a diagnostic evaluator, and a command controller. A tape library apparatus includes may include a plurality of tape drives and a plurality of magnetic tapes which includes specific magnetic tapes assigned for respective pieces of data specified by each data request issued by a host computer and a common magnetic tape provided for writing the respective pieces of the data. The diagnostic evaluator determines a use mode of the tape library apparatus on the basis of the configuration information. When the total number of the specific magnetic tapes is higher than the number of available tape drives, the use mode is determined and a command is issued to the tape library apparatus from the command controller to write data to the specific magnetic tape and to write to the common magnetic tape the respective pieces of the data.

Tape library control apparatus and tape library control method

In a storage system, a disk device performs recovery and transfers read data to a control device, and the control device judges the validity of the recovery to prevent a transfer of erroneous data. A control device read-accesses a disk device, and the disk device returns read data and a recovered read error response. A control device, at the time of an initial recovered read error, performs a retry of a similar command, and if an error does not occur for read commands including the retry read command, judges the data to be valid. Uncertain data (suspect data) upon occurrence of a recovered read error is restored through disk retry, and accurate read data can be transferred to the host.

Storage system, storage control device, and storage control method detecting read error response and performing retry read access to determine whether response includes an error or is valid

In a hierarchical storage system, a primary storage device interposed between a secondary storage device and a data processing apparatus has a restoring unit. When at least two current storage units, which configure a logical volume and are in the mirroring relationship, concurrently fail, the restoring unit reads out data recorded in a logical volume of the current storage units from a virtual logical volume of the secondary storage device, records the data on the at least two spare storage units, thereby restoring, on the spare storage units, the logical volume of the current storage units. Even when a plurality of storages configuring a logical volume and being in the mirroring relationship concurrently fail, it is possible to immediately restore the logical volume without the maintenance operation or the like.

Information processing system, primary storage device, and computer readable recording medium recorded thereon logical volume restoring program

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Kawasaki, Japan

Yusuke Inai