Systems and methods for striped storage migration

Details Systems and methods for striped storage migration Systems and methods for striped storage migration

2006-02-07

2006-02-07

Peugh, Brian R. (Department: 2187)

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

C711S165000, C711S144000, C714S005110

Reexamination Certificate

active

06996689

ABSTRACT:
Systems and methods for expanding capacity of a storage system are provided. Data blocks of a capacity increasing disk are pre-configured with a first progress indicator used to determine correctly migrated data blocks. A migrator migrates groups of data blocks among present disk(s) and capacity increasing disk(s). Each group comprises a predetermined number of data blocks. An updater updates a second progress indicator of the second disk in response to completion of migration of each group. The migrator is adapted to generate the first progress indicator such that it may resume migration of groups of data blocks after a migration interruption according to the first and the second progress indicators.

REFERENCES:
patent: 6446223 (2002-09-01), Morishita et al.
patent: 6598174 (2003-07-01), Parks et al.
patent: 6647460 (2003-11-01), Kodama
patent: 6851020 (2005-02-01), Matsumoto et al.
patent: 2003/0014584 (2003-01-01), Kodama

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