Asynchronous write queues, reconstruction and check-pointing in disk-mirroring applications
An asynchronous disk mirroring system for use within a network computer system. The disk mirroring system includes a first storage volume connected to receive write requests from the computer system; a write queue connected to also receive the write requests directed to the first storage volume; and...
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| creator | MCDOWELL STEVEN R |
| description | An asynchronous disk mirroring system for use within a network computer system. The disk mirroring system includes a first storage volume connected to receive write requests from the computer system; a write queue connected to also receive the write requests directed to the first storage volume; and a second storage volume connected to the write queue to receive the write requests. The write queue operates to delay the time of receipt of the write requests by the second storage volume. Write requests are passed through the write queue, comprising a plurality of serially connected write buffers, in a first-in, first-out (FIFO) order. A log file connected to receive the delayed write requests from the write queue is also included in the disk mirroring system to provide for log-based mirror reconstruction and check-pointing of the mirrored volumes. |
| format | Patent |
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The disk mirroring system includes a first storage volume connected to receive write requests from the computer system; a write queue connected to also receive the write requests directed to the first storage volume; and a second storage volume connected to the write queue to receive the write requests. The write queue operates to delay the time of receipt of the write requests by the second storage volume. Write requests are passed through the write queue, comprising a plurality of serially connected write buffers, in a first-in, first-out (FIFO) order. 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The disk mirroring system includes a first storage volume connected to receive write requests from the computer system; a write queue connected to also receive the write requests directed to the first storage volume; and a second storage volume connected to the write queue to receive the write requests. The write queue operates to delay the time of receipt of the write requests by the second storage volume. Write requests are passed through the write queue, comprising a plurality of serially connected write buffers, in a first-in, first-out (FIFO) order. A log file connected to receive the delayed write requests from the write queue is also included in the disk mirroring system to provide for log-based mirror reconstruction and check-pointing of the mirrored volumes.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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| subjects | CALCULATING COMPUTING COUNTING ELECTRIC DIGITAL DATA PROCESSING PHYSICS |
| title | Asynchronous write queues, reconstruction and check-pointing in disk-mirroring applications |
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