Method and apparatus for facilitating validation of data...

Details Method and apparatus for facilitating validation of data... Method and apparatus for facilitating validation of data...

2005-06-07

2005-06-07

Le, Dieu-Minh (Department: 2114)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S718000

Reexamination Certificate

active

06904547

ABSTRACT:
One embodiment of the present invention provides a system that facilitates validation of data retrieved from a secondary storage device. The system operates by receiving a write request to write new data to a block of the secondary storage device, and calculating a new checksum value from the new data. The system also retrieves a current checksum value and an old checksum value associated with the block of the secondary storage device. Next, the system performs a checksum write operation to a validation device to update the current checksum value and the old checksum value, and then performs a data write operation to the secondary storage device to write the new data to the block of the secondary storage device.

REFERENCES:
patent: 6061822 (2000-05-01), Meyer
patent: 6092229 (2000-07-01), Boyle et al.
patent: 6098194 (2000-08-01), Rinne et al.
patent: 6324661 (2001-11-01), Gerbault et al.
patent: 6643821 (2003-11-01), Karim et al.
patent: 2002/0162076 (2002-10-01), Talagala et al.
patent: 2003/0167439 (2003-09-01), Talagala et al.

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