Storage system realizing scalability and fault tolerance

Details Storage system realizing scalability and fault tolerance Storage system realizing scalability and fault tolerance

1997-03-17

1998-10-06

An, Meng-Ai T.

395309, 39518319, 39518509, 39518401, G06F 1100, G06F 1300

Patent

active

058190546

ABSTRACT:
A storage system to be connected to a large-scale computer includes a plurality of first logical units connected to a host device, a plurality of second logical units connected to a storage device, a plurality of cache memories, and a common bus wired between these logical units and memories. The plurality of first logical units, the plurality of second logical units, and the plurality of cache memories are all made in the form of modules. The modules are detachably mounted to the common bus disposed on a back plane. The storage device can be made up of a plurality of small-size storage units arranged in an array. Thus, the storage system realizes its scalability. Since the plurality of first logical units, the plurality of second logical units, and the plurality of cache memories are duplexed and the common bus is made in the form of 2 channels, the storage system can perform degrade operation. Since plurality of first logical units, the plurality of second logical units, and the plurality of cache memories allow hot replace, the storage system can realize its non-stop maintenance.

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Foreign application Office Action dated May 30, 1996, with English language translation.

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