Storage apparatus, controller and control method

Details Storage apparatus, controller and control method Storage apparatus, controller and control method

2006-11-28

2008-12-02

Nguyen, Dang T. (Department: 2824)

Static information storage and retrieval

Associative memories

Ferroelectric cell

C365S221000, C365S185220

Reexamination Certificate

active

07460383

ABSTRACT:
Proposed is a highly reliable storage apparatus with fast access speed and low power consumption, as well as a controller and control method for controlling such a storage apparatus. This storage apparatus is equipped with a flash memory that provides a storage extent for storing data, a disk-shaped memory device with more data write cycles than the flash memory, and a cache memory with faster access speed than the flash memory. Data provided from a host system is stored in the cache memory, this data is read from the cache memory at a prescribed timing, data read from the cache memory is stored in the disk-shaped memory device, and, when a prescribed condition is satisfied, this data is read from the disk-shaped memory device, and the data read from the disk-shaped memory device is stored in the flash memory.

REFERENCES:
patent: 5784712 (1998-07-01), Byers et al.
patent: 2007/0220210 (2007-09-01), Grimsrud
patent: 2004-021811 (2004-01-01), None

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