Host-independent incremental backup method, apparatus, and...

Details Host-independent incremental backup method, apparatus, and... Host-independent incremental backup method, apparatus, and...

2006-06-27

2006-06-27

Portka, Gary (Department: 2188)

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

C711S161000, C711S154000, C707S793000, C714S006130

Reexamination Certificate

active

07069402

ABSTRACT:
Block-level operations are tracked within a storage subsystem. Metadata corresponding to the block-level operations are collected within the storage subsystem between snapshot (i.e., backup) instances. The collected metadata are referenced to ensure that only overwritten data blocks are copied to the backup device. The present invention leverages the capabilities of flashcopy operations, frees the host from costly housekeeping tasks, and facilitates efficient backup operations independent of a host or filesystem.

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