Method, system, and program for managing data migration

Details Method, system, and program for managing data migration Method, system, and program for managing data migration

2007-05-22

2007-05-22

LeRoux, Etienne P (Department: 2161)

Data processing: database and file management or data structures

Database design

Data structure types

Reexamination Certificate

active

10747922

ABSTRACT:
Provided are a method, system, and program for managing data migration from one data organization type to another. In one embodiment, a migration manager defers writing progress indicators to reduce data write operations during the migration process. In one embodiment, progress indicators are written to configuration areas of disk drives when a condition is met. One example of a condition is the expiration of a time period since the last progress indicator was written. Another example of a condition is an overlap between the destination of a unit of data being migrated and the source of the unit of data. Yet another example is an overlap between the destination of a unit of data and a portion of the data source which has been copied but a progress indicator has not yet been written covering the data source portion.

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patent: 6467023 (2002-10-01), DeKoning et al.
patent: 2004/0260873 (2004-12-01), Watanabe
Intel Corporation, “Intel 80303 I/O Processor”,Datasheet, Jun. 2002, pp. 1-56.
Patterson, D.A., G. Gibson, and R.H. Katz, “A Case for Redundant Arrays of Inexpensive Disks (RAID)”,ACM SIGMOD International Conference on Management of Data, Jun. 1988, pp. 109-116.

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