Method and system for accessing data using an asymmetric...

Details Method and system for accessing data using an asymmetric... Method and system for accessing data using an asymmetric...

2011-07-12

2011-07-12

Patel, Kaushikkumar (Department: 2186)

Electrical computers and digital processing systems: memory

Storage accessing and control

Hierarchical memories

C711S103000, C711S113000, C711S159000

Reexamination Certificate

active

07979638

ABSTRACT:
A system configured to receive a first request for a first datum, query the cache metadata to determine whether the first datum is present in the main memory or the asymmetric cache device (ACD), retrieve the first datum from the main memory when the first datum is present in the main memory, retrieve the first datum from the ACD when the first datum is present in the ACD and not present in the main memory, store a copy of the first datum in the main memory when the first datum is present in the ACD and not present in the main memory, update the cache metadata to indicate that the copy of the first datum is stored in the main memory when the first datum is present in the ACD and not present in the main memory, and retrieve the first datum from the disk when the first datum is not present in the ACD and is not present in the main memory.

REFERENCES:
patent: 2007/0050548 (2007-03-01), Bali et al.
patent: 2007/0106853 (2007-05-01), Evanchik et al.
patent: 2007/0288692 (2007-12-01), Bruce et al.
patent: 2008/0114930 (2008-05-01), Sanvido et al.
patent: 2008/0155190 (2008-06-01), Ash et al.

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