Systems and methods for a read only mode for a portion of a storage system
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United States of America Patent
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May 24, 2011
Grant Date -
Oct 1, 2009
app pub date -
Mar 27, 2008
filing date -
Mar 27, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
In general, embodiments of the invention relate to reading data from and writing data to a storage system. Specifically, embodiments of the invention relate to a read only mode for a portion of a storage system. In one embodiment, a selective read-only mode for a portion of a storage system is implemented by monitoring a condition that may affect a subset of persistent storage in a storage system, by detecting the condition, by entering a read-only mode for the subset, and by enforcing a policy of processing write requests and read requests to the storage system, which includes processing the write requests without modifying user data stored on the subset and processing the read requests, including requests for user data stored on the subset.
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