Storage system
AssigneeHitachi, Ltd.
InventorsTatuya Ninomiya, Hidefumi Masuzaki, Hiroyuki Kurosawa, Naoya Takahashi, Yasuo Inoue, Hidehiko Iwasaki, Masayuki Hoshino, Soichi Isono
Life of this patent
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Abstract
A storage system to be connected to a large-scale computer includes a plurality of host adaptors connected to a host device, a plurality of storage device for storing data from the host device, a plurality of disk adaptors connected to the storage devices, a plurality of caches for temporarily storing data transferred between the host adaptors and the disk adaptors, and two buses connected to the host disk adaptors, and the caches. The buses transfer data among the host and disk adaptors and the caches.
Claims20
A storage system comprising:
- a plurality of first logical units connected to a host device which form interfaces for the host device;
- a storage device for storing therein information received from the host device;
- a plurality of second logical units connected to said storage device which form interfaces for said storage device;
- a cache memory device for temporarily storing therein data transferred between said plurality of first logical units and said plurality of second logical units;
- and
- a common bus mutually wired between said plurality of first logical units, said plurality of second logical units and said cache memory device.
A storage system comprising:
- a plurality of duplexed first logical units connected to a host device which form interfaces for the host device;
- a storage device for storing therein information received from said host device;
- a plurality of duplexed second logical units connected to said storage device which form interfaces for said storage device;
- a duplexed cache memory device for temporarily storing therein data transferred between said plurality of second logical units and said plurality of first logical units;
- and
- a common bus mutually wired between said plurality of first logical units, said plurality of second logical units and said cache memory device.
A storage system comprising:
- a plurality of duplexed first logical units connected to a host device which form interfaces for the host device;
- a storage device for storing therein information received from said host device;
- a plurality of duplexed second logical units connected to said storage device which form interfaces for said storage device;
- a duplexed cache memory device for temporarily storing therein data transferred between said plurality of first logical units and said plurality of second logical units;
- and
- a common bus mutually wired between said plurality of first logical units, said plurality of second logical units and said cache memory device,
- wherein said plurality of first logical units, said plurality of second logical units and said cache memory device allow hot replace with respect to said common bus.
Dependencies are inferred from the claim text.