Maintaining consistency in a remote copy data storage system

Details Maintaining consistency in a remote copy data storage system Maintaining consistency in a remote copy data storage system

2007-08-31

2010-10-26

Neausoliel, Robert (Department: 2113)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S011000, C714S018000, C714S020000, C707S999204

Reexamination Certificate

active

07823008

ABSTRACT:
An apparatus configured to operate as a primary for a remote copy pair is provided. The apparatus comprises a journal component at said primary for generating journal entries for one or more uncompleted sequenced batches; a configurator responsive to an error indication from a secondary for enumeration of said one or more uncompleted sequenced batches; and a primary server responsive to said enumeration of said one or more uncompleted sequenced batches to reissue to said secondary one or more write requests for said one or more uncompleted sequenced batches, during recovery processing.

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