Electrical computers and digital processing systems: memory – Storage accessing and control – Specific memory composition
Reexamination Certificate
2006-11-21
2006-11-21
Peikari, B. James (Department: 2189)
Electrical computers and digital processing systems: memory
Storage accessing and control
Specific memory composition
C711S213000, C709S219000
Reexamination Certificate
active
07139874
ABSTRACT:
A client-directed pre-stage operation of a cache memory used to access data blocks from a mass data storage device attached to a host computer through a channel control processor is provided by a method and apparatus comprising a channel control processor for retrieving data blocks from the mass storage device to be pre-staged within the cache memory, a channel interface coupled between the channel control processor and the host computer, a mass storage device interface coupled between the channel control processor and the mass storage device, and a cache memory coupled between the channel interface and the mass storage interface; the cache memory is further coupled to the cache control processor to provide the cache control processor access to data stored within the cache memory. The cache control processor receives a cache bitmap from the host computer to specify the data blocks from the mass storage device to be pre-staged into the cache memory. Each bit within the cache bitmap corresponds to a data block within the mass storage device which may be pre-staged into the cache memory.
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Milillo Michael S.
West Christopher J.
Peikari B. James
Schulte Timothy R.
Storage Technology Corporation
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