Incremental backup system

Details Incremental backup system Incremental backup system

1996-05-07

1998-02-17

Hua, Ly

395620, G06F 1200

Patent

active

057200262

ABSTRACT:
An incremental backup system includes a storage unit, which is accessed in block units of a predetermined size, for storing data to be backed up. Difference map information stored in the storage unit records the latest backup generation number, indicating when data in each block has been updated. A latest update generation management mechanism manages backup generation numbers for each block. A difference management mechanism inputs and stores backup data in a backup unit. The backup data includes data in a block of the storage unit which is updated in a specified backup generation based on the difference map information, a position of the block in the storage unit, and a backup generation in which the block has been updated.

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patent: 5454099 (1995-09-01), Myers et al.
patent: 5522037 (1996-05-01), Kitagawa et al.
patent: 5596709 (1997-01-01), Bond et al.

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