Data processing: database and file management or data structures – Database and file access
Reexamination Certificate
2008-03-28
2010-10-26
Corrielus, Jean M (Department: 2162)
Data processing: database and file management or data structures
Database and file access
C707S755000, C711S101000, C711S111000, C711S117000, C711S118000
Reexamination Certificate
active
07822731
ABSTRACT:
Described are techniques for managing a sequential stream in a data storage system. A front-end component receives a plurality of data operations for a plurality of data portions and determines that the plurality of data portions are associated with a sequential stream. Each of the plurality of data portions of the sequential stream is associated with a sequential stream identifier, and a position indicator uniquely identifying a position of said each data portion in said sequential stream. Each of the plurality of data portions that is prefetched is associated with a remaining prefetched identifier and included in a prefetched chunk of data portions. The front-end component uses information about said sequential stream in connection with managing said sequential stream. The information includes the sequential stream identifier, one or more position indicators, and one or more remaining prefetched identifiers.
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Lefferts John W.
Levin-Michael Orit
Yu Rong
Corrielus Jean M
EMC Corporation
Muirhead and Saturnelli LLC
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