Method and apparatus for transferring data in a storage device including a dual-port buffer
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United States of America Patent
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Jun 3, 1997
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N/A
app pub date -
Mar 24, 1994
filing date -
Sep 27, 1991
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Abstract
A computer storage system having a dual port buffer memory for improved performance. The invention comprises a computer storage subsystem that includes a dual port buffer memory that effectively provides two internal data busses for the storage subsystem: one bus for data transfers between the dual port buffer memory and the storage units, and a second bus for data transfers between the dual port buffer memory and a CPU. The throughput of the storage subsystem is roughly equivalent to the bandwidth of the slower of the two busses. In alternative configurations, the invention may use a plurality of dual port buffer memories in parallel to increase the effective throughput of the storage subsystem, and better match the bandwidth of the two busses.
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