DYNAMIC RAID GEOMETRIES IN AN SSD ENVIRONMENT
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United States of America Patent
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Issued Date -
Apr 5, 2012
app pub date -
Oct 1, 2010
filing date -
Oct 1, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A system and method for dynamic RAID geometries. A computer system comprises client computers and data storage arrays coupled to one another via a network. A data storage array utilizes solid-state drives and Flash memory cells for data storage. A storage controller within a data storage array is configured to configure a first subset of the storage devices for use in a first RAID layout, the first RAID layout including a first set of redundant data. The controller further configures a second subset of the storage devices for use in a second RAID layout, the second RAID layout including a second set of redundant data. Additionally, the controller configure an additional device not included in either the first subset or the second subset to store redundant data for both the first RAID layout and the second RAID layout.
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