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External storage control device and data transfer method between external storage control devices

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • G06F-012/00
출원번호 US-0614808 (2003-07-09)
등록번호 US-RE43600 (2012-08-21)
우선권정보 JP-8-002050 (1996-01-10)
발명자 / 주소
  • Ozawa, Koji
  • Sano, Kazuhide
  • Koide, Takeshi
  • Nakamura, Katsunori
출원인 / 주소
  • Hitachi, Ltd.
대리인 / 주소
    Brundidge & Stanger, P.C.
인용정보 피인용 횟수 : 0  인용 특허 : 26

초록

In a data processing system in which main and sub disk storage devices are under the control of individual each disk control devices, the write processing time is reduced by selectively sending data according to the command-chaining time between main and sub disk control devices. A section for judgi

대표청구항

1. A first external storage control device which is connected to a first group of external storage devices and controls data transfer between said first group of external storage devices and a host, wherein said first external storage control device is connected to a second external storage control

이 특허에 인용된 특허 (26)

  1. Ohzora Mayumi,JPX ; Aoki Takahiro,JPX, Apparatus and method for accessing plural storage devices in predetermined order by slot allocation.
  2. Oizumi Yumiko (Kawasaki JPX), Apparatus and method for ensuring data in external storage system.
  3. Fujibayashi, Akira; Yamamoto, Akira, Apparatus and method for online data migration with remote copy.
  4. Nakamura Yoshihiro (Suwa JPX) Ogawa Takao (Suwa JPX), Apparatus for controlling data transfer between external interfaces through buffer memory using table data having transf.
  5. Matsunami Naoto,JPX ; Yoshida Minoru,JPX ; Miyazawa Shoichi,JPX ; Oeda Takashi,JPX ; Honda Kiyoshi,JPX ; Ohno Shuji,JPX, Array disk controller for grouping host commands into a single virtual host command.
  6. Blount Michelle K. (Tucson AZ) Clark Connie M. (Tucson AZ) Harding Warren B. (Tucson AZ) Tang Horace T. S. (Tucson AZ), Batching data objects for recording on optical disks with maximum object count.
  7. Baldiga Frank P. (Endwell NY) Meyer Christopher (Vestal NY), Bundling client write requests in a server.
  8. Ofek Yuval, Bundling of write data from channel commands in a command chain for transmission over a data link between data storage s.
  9. Bachmat Eitan, Caching system and method providing aggressive prefetch.
  10. Matsunami Naoto,JPX ; Kan Masayuki ; Kaneda Yasunori,JPX ; Yagisawa Ikuya,JPX ; Oeda Takashi,JPX ; Arakawa Hiroshi,JPX, Computer system with a reduced number of command end interrupts from auxiliary memory unit and method of reducing the nu.
  11. Henderson Edward E. (Philadelphia PA) Fujimoto Akira (Conshohocken PA) Gaw Stanley E. (Roslyn PA), Control system for magnetic disc storage device.
  12. Heath, Chester A.; VanDuren, Richard G., Cycle stealing I/O controller with programmable offline mode of operation.
  13. Matsuda Susumu (Akishima) Togo Kazuo (Hamura) Iwasaki Takao, Data base processing apparatus using relational operation processing.
  14. Beal David G. (Longmont CO) Eifert Fred C. (Louisville CO) Ludlam Henry S. (Longmont CO) Milligan Charles A. (Golden CO) Rudeseal George A. (Boulder CO) Swiatek Paul R. (Lafayette CO), Data storage system for providing redundant copies of data on different disk drives.
  15. Ofek Yuval, Data transferring system having foreground and background modes and upon detecting significant pattern of access in fore.
  16. Ozawa Koji,JPX ; Sano Kazuhide,JPX ; Koide Takeshi,JPX ; Nakamura Katsunori,JPX, External storage control device and data transfer method between external storage control devices.
  17. Lee Lane ; Gurkowski Mark, IDE disk drive arrangement that combines the capacity of a master drive and slave drive while hiding the presence of sla.
  18. Lawrence Kenneth J. (Rochester MN) McDermott Michael J. (Oronoco MN), Method and apparatus for deriving mirrored unit state when re-initializing a system.
  19. Beardsley Brent C. (Tucson AZ) Benhase Michael T. (Tucson AZ) Spear Gail A. (Tucson AZ) Williams William D. (Tucson AZ), Method for operating a cached peripheral data storage subsystem including a step of subsetting the data transfer into su.
  20. Sakaki Hidetoshi,JPX ; Kurano Akira,JPX ; Nakamura Katsunori,JPX ; Ishikawa Takehiro,JPX ; Hatanaka Toshiaki,JPX ; Nishijima Hiroshi,JPX, Method of data migration.
  21. Numata Tsutomu (Sagamihara JPX) Kigami Yuji (Sagamihara JPX) Sakai Tatsuya (Sagamihara JPX) Shimizu Kenji (Yamato JPX), Programmable external storage control apparatus.
  22. Nagasawa Teruo,JPX ; Koide Takeshi,JPX ; Nakamura Katsunori,JPX, Subsystem replacement method.
  23. Yanai Moshe (Framingham MA) Vishlitzky Natan (Brookline MA) Alterescu Bruno (Newton MA) Castel Daniel (Farmingham MA), System and method for disk mapping and data retrieval.
  24. Ofek Yuval (Hopkinton MA) Yanai Moshe (Brookline MA), System for migrating data by selecting a first or second transfer means based on the status of a data element map initia.
  25. Duyanovich Linda Marie ; Micka William Frank ; Shomler Robert Wesley, Target DASD controlled data migration move.
  26. Kamo Yoshihisa (Musashimurayama JPX) Aoi Hajime (Tachikawa JPX) Kakuta Hitoshi (Kokubunji JPX) Tsunoda Yoshito (Tokyo JPX) Fujisawa Hiromichi (Tokorozawa JPX) Seo Yosuke (Sagamihara JPX) Ouchi Yasuhi, Variable length data in a parallel disk array.
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