Hitachi, Ltd.

Hitachi Microcomputer Engineering, Ltd.

Hitachi Microcomputer System, Ltd.

Hitachi Software Engineering Company, Ltd.

Pola Pharma Inc.

Microcomputer Engineering Ltd.

Hiroyuki Kitajima

Akira Yamamoto

Yoshihiro Asaka

Shigeo Honma

Yoshiaki Kuwahara

Masafumi Nozawa

Kouji Arai

Takao Satoh

Yoshihisa Kamo

Akira Kurano

Toshiaki Tsuboi

Michio Miyazaki

Shigeo Homma

Koji Ozawa

Tadashi Ohsone

Toshio Nakano

Naoki Watanabe

Masashi Tsuchida

Kazuhiko Ohmachi

Takashi Doi

Kiyoshi Hisano

Toshifumi Nishimura

Akihito Ogino

Akihiko Togawa

Yoshiaki Yamashita

Nobuhiro Taniguchi

Sadasaburoh Kanai

Yukio Nakano

Takao Sato

Katsunori Nakamura

Shigeru Kishiro

Takashi Sumiyoshi

Minoru Kosuge

Yoshiro Shiroyanagi

Kosaku Kambayashi

Katsuharu Kakuse

Kiyoshi Yata

Kazuhiro Satoh

Toshio Honma

Takikazu Takeuchi

Hideo Mutoh

Junichi Kazama

Mitsuru Doki

Shigenari Hirokawa

Shoo Urabe

Nobuhiro Taniquchi

Hirofumi Nakagawa

Tomomasa Shimanuki

Takaaki Seki

Hidekazu Kanao

Shinichi Fukushima

Miho Motoyama

Provided is a method for identifying and suppressing abnormal growth of fibroblasts at an early stage. Provided is a method for identifying the growth state of fibroblasts using as an index the level of expression of ETFB (electron transfer flavoprotein beta subunit), comprising: judging, in cases where the level of expression of ETFB is high, that there is a high probability that fibroblasts are abnormally growing; and judging, in cases where the level of expression of ETFB is low, that there is a high probability that fibroblasts are normally growing. Further, by inhibition of ETFB, abnormal growth of fibroblasts can be suppressed.

Method of identifying abnormal cells by expression levels of ETFB

A storage system stores multiple copies of data on physical storage implemented, for example, with multiple disk units. Input/output read requests are received from host systems and distributed in a manner that allows parallel read operations to be conducted over the multiple disk units of the physical storage.

Load distribution of multiple disks

When receiving a write request from a processor, a control unit checks the condition of existence (or the presence/absence) in a cache for information necessary for generation of an updated value of a parity record, receives write data and reports the completion of the write request to the processor. In asynchronism with the write request from the processor, the control unit performs a load process for that information among the information necessary for generation of the updated value of the parity record which may be prepared in asynchronism with the write request from the processor and a write after process for the updated value of the parity record.

Storage unit subsystem

A method of respectively reading and writing data to and from a plurality of physical disk units in response to I/O requests from a host computing system includes establishing a logical disk group having a number of logical disk elements, mapping each of the logical disk elements to corresponding physical disk units, receiving from the host computing system an I/O request for data to select a one of the number of logical disk elements, accessing the physical disk unit corresponding to the selected one logical disk to access for the data, and transferring the accessed data to the host computing system.

Distribution of I/O requests across multiple disk units

In an information processing system having a data processing apparatus, a control unit for a cache memory, and a storage unit for storing a record, respectively interconnected together, wherein when the control unit receives from the data processing apparatus a write request for a record to be written and if the record to be written is not being stored in the cache memory, the control unit receives a data to be written in the object record from the data processing apparatus and stores the received data in the cache memory. After notifying the data processing apparatus of a completion of a data write process, the control unit checks if the object record in which the data stored in the cache memory is being stored in the storage unit, if the object record is being stored in the storage unit, the data in the cache memory is written in the storage unit, and if not, the data in the cache memory is not written and such effect is notified to the data processing apparatus.

Cache control method and apparatus

A disk storage system has a control unit having a plurality of external ports connectable to a mirrored disk including two disks to which write data is written. When the control unit receives two read requests issued from a processor to the disk unit group, a first read operation is performed to read data requested by the first read request from one of the disks and a second read operation is performed to read data requested by the second read request from the other one of the disks. Also, a first transferring operation is performed to transfer data read by the first read operation to one external port of the control unit and a second transferring operation is performed to transfer data read by the second read operation to another external port of the control unit. Further, the data read by the two read operations is transferred to the processor via the external ports.

Storage system with data prefetch function

Disk storage system having capability for performing parallel read operation

In allocating an area of a cache memory to each storage unit, proper allocation of the cache memory is made to each storage unit. If the amount of write-after data becomes equal to or more than a threshold value, an allocation limit is set to each disk unit. If CPU issues a data write request requiring the amount of data equal to or more than the allocation limit, the data write request is held in a wait state until the amount of write-after data becomes less than the allocation limit. Therefore, the allocation amount to the disk unit becomes neither too large nor too small. In this manner, proper allocation of the cache memory to each disk unit can be realized.

Controller limiting modification of cache based upon amount of dirty

A disk storage system has a control unit having a plurality of external connection points. When the control unit receives two read requests issued from a processor to two disks of a disk unit group, a first read operation is performed to read data requested by the first read request from one of the disks and a second read operation is performed to read data requested by the second read request from the other one of the disks. Also, a first output operation is performed to output data read by the first read operation from one of the external connection points of the control unit and a second output operation is performed to output data read by the second read operation from another of the external connection points of the control unit. The second output operation is started before the first output operation has finished.

Simultaneous read/write control of data storage disk units

Growing community of inventors

Yokohama, Japan

Hiroyuki Kitajima