Techniques for data signature and protection against lost...

Details Techniques for data signature and protection against lost... Techniques for data signature and protection against lost...

2005-09-23

2008-11-18

Iqbal, Nadeem (Department: 2114)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

Reexamination Certificate

active

07454668

ABSTRACT:
Described are techniques for verifying data. A write operation request for writing to a first data block is received. A first copy of an identifier for said first data block in a memory is updated. A second copy of the identifier for the first data block is updated. The second copy is stored with the first data block on a data storage device. A read operation request is received for the first data block. The first data block and an associated identifier from the data storage device are read. Data verification processing is performed for the first block in accordance with the associated identifier, the first copy from the memory, and any pending write operations for the first data block.

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