Fast verification of computer backup data

Details Fast verification of computer backup data Fast verification of computer backup data

2006-02-03

2008-09-02

Thai, Tuan V. (Department: 2186)

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

C711S100000, C711S154000, C711S161000

Reexamination Certificate

active

07421551

ABSTRACT:
A backup method for a computer system that affords fast verification of source data written to backup media includes reading a portion of the source data from a source storage volume and generating a hash of the source data. The source data is written to the backup media as backup data, and the hash generated from the source data is written to the backup media and associated with the backup data corresponding to the source data from which the hash was generated. Verification of the backup data can be subsequently performed by reading the backup data from the backup media, generating a hash from the backup data read, and comparing that hash with the hash originally stored on the backup media. This enables the backup data to be verified as corresponding to the original source data without the necessity of rereading the source data from the source volume, and enables faster, more accurate off line verification subsequent to the backup process.

REFERENCES:
patent: 2005/0283662 (2005-12-01), Li et al.
patent: 2006/0242489 (2006-10-01), Brockway et al.

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