Backup method, storage system, and program for backup

Details Backup method, storage system, and program for backup Backup method, storage system, and program for backup

2007-10-23

2007-10-23

Sough, Hyung (Department: 2188)

Data processing: database and file management or data structures

Database design

Data structure types

C707S793000, C711S161000, C711S162000

Reexamination Certificate

active

10898225

ABSTRACT:
A backup method is provided for use with a storage system composed of a memory which stores a control program, a disk drive having an primary volume, a differential volume, and mapping information, the primary volume storing data sent from a client, the differential volume storing differential data of a snapshot of the primary volume, the mapping information managing the relation between data stored in the primary volume and differential data stored in the differential volume, and a control processor which controls read and write of data in the disk drive. The mapping information is referred to compose the data stored in the primary volume and the differential data stored in the differential volume. The composed data is sent to a backup device.

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M. Kaczmarski, eta l., “Beyond Backup Toward Storage Management”, IBM Systems Journal, vol. 42, No. 2, 2003, pp. 322-337.

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