Data processing: database and file management or data structures – File or database maintenance – Database backup
Reexamination Certificate
2011-05-24
2011-05-24
Lee, Wilson (Department: 2163)
Data processing: database and file management or data structures
File or database maintenance
Database backup
C707S648000
Reexamination Certificate
active
07949636
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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Akidau Tyler A.
Fachan Neal T.
Passey Aaron J.
EMC Corporation
Knobbe Martens Olson & Bear LLP
Lee Wilson
LandOfFree
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