Backup data erasure method

Details Backup data erasure method Backup data erasure method

2008-02-13

2010-11-09

Lu, Charles E (Department: 2161)

Data processing: database and file management or data structures

File or database maintenance

Synchronization

C707S640000, C711S162000

Reexamination Certificate

active

07831551

ABSTRACT:
According to this invention, a computer system has a host computer, a first storage subsystem providing a first volume, a second storage subsystem providing a second volume for storing a copy of data stored in the first volume. The computer system stores copy configuration information including correspondence between the first volume and the second volume. The management computer transmits the data erasure request to the first storage subsystem upon reception of a first data erasure request for erasing the first volume. The first storage subsystem stops a copying process of data stored in the first volume to the second volume, transmits a second data erasure request for erasing the second volume to the second storage subsystem, and erases the data stored in the first volume. Thus, in the case of erasing data stored in a storage area, corresponding data stored in a destination storage area is also erased so that security risks can be reduced.

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U.S. Appl. No. 12/030,545, filed Feb. 2008, Taguchi et al.

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