Use of read data tracking and caching to recover from data...

Details Use of read data tracking and caching to recover from data... Use of read data tracking and caching to recover from data...

2006-08-22

2006-08-22

Sparks, Donald (Department: 2187)

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

Reexamination Certificate

active

07096332

ABSTRACT:
In a system in which read data tracking and caching is used to recover from data corruption, a first request to read data from a primary data mirror is received from a computer system. Data is read from the primary data mirror in response to receiving the first request. Additionally data from a mirrored copy of the primary data mirror is read. Data read from the primary data mirror is returned to the computer system. Data read from the mirrored copy is stored into a memory device. If a second request is received from the computer system to read the same data of the first request, data stored in the memory device may be returned in response thereto.

REFERENCES:
patent: 6910178 (2005-06-01), Kiselev et al.
patent: 6993677 (2006-01-01), Wilner
patent: 2003/0145270 (2003-07-01), Holt
patent: 2003/0167439 (2003-09-01), Talagala et al.

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