| 摘要 |
PURPOSE: A distributed control device of a RAID(Redundant Array Independent Disks) system is provided to improve a performance in proportion to the number of controllers by supporting a fault allowance of at least two RAID controllers, processing a controller in parallel, and selecting a dual PCI bus structure in the controller. CONSTITUTION: A plurality of disc groups(290,291,292,293) store data using a fiber channel as a matching unit for sharing the sate. A plurality of distributed sharing RAID control units(240,250,260,270) share the disc groups(290,291,292,293) and control a RAID. A plurality of fiber channel switches(280,281) connect the disc groups(290,291,292,293) to the RAID control units(240,250,260,270). At least one host computer(200) reads and writes data finally using the distributed sharing RAID control units(240,250,260,270) as the same storing medium. A network switch(230) is a communication network for connecting the host computer(200) and the distributed sharing RAID control units(240,250,260,270). A distributed locking unit is connected to the RAID control units(240,250,260,270) for supplying the RAID control units(240,250,260,270) as the same data medium. A diagnosis client(231) diagnoses and sets the RAID control units(240,250,260,270) through an Ethernet.
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