Methods and apparatus for optimal journaling for continuous...

Details Methods and apparatus for optimal journaling for continuous... Methods and apparatus for optimal journaling for continuous...

2006-09-28

2009-12-01

Cottingham, John R. (Department: 2167)

Data processing: database and file management or data structures

Database design

Data structure types

C707S793000

Reexamination Certificate

active

07627612

ABSTRACT:
Methods and systems for continuous data replication, including receiving a write transaction from a production site, the write transaction including raw data (RWNEW), a size indicator (SZ1) for the size of the raw data, and a start address (ADD1) for writing the raw data, copying the raw data (RWNEW) into a first journal data stream at a current journal address (JADD1), and copying the size indicator (SZ1), the start address (ADD1) and the journal address (JADD1) into a first journal meta-data stream.

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