Hierarchical performance system for managing a plurality of stor

Details Hierarchical performance system for managing a plurality of stor Hierarchical performance system for managing a plurality of stor

1996-12-03

2000-02-29

Peikari, B. James

Electrical computers and digital processing systems: memory

Storage accessing and control

Hierarchical memories

711167, 710 58, 710 60, 710 16, 710 15, G06F 1208

Patent

active

060322241

ABSTRACT:
A computer having capabilities for hierarchical storage of data, said computer including an interpreter that maps logical user read and write requests to physical block level read and write requests, and a hierarchical performance driver having a disk driver interface for receiving the block level read and write requests from the interpreter, the hierarchical performance driver issuing instructions to read and write data from plural data storage devices in response to block level read and write requests, plural data storage devices having different data access speeds, the hierarchical performance driver monitoring the rates of access of blocks of data stored on the data storage devices and transferring blocks of data accessed infrequently from a faster data storage device to a slower data storage device.

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