Apparatus and method of null data skip remote copy

Details Apparatus and method of null data skip remote copy Apparatus and method of null data skip remote copy

2006-04-04

2006-04-04

Peikari, B. James (Department: 2189)

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

C711S162000, C707S793000

Reexamination Certificate

active

07024526

ABSTRACT:
A method and apparatus are provided for enhancing the performance of storage systems is described. In the making of an initial copy to a secondary subsystem, or in the initial storage of data onto a primary storage subsystem, null data is skipped. The data may be skipped by sending the non-null data in sequence so missing addresses are identified as being null data, or a skip message may be used to designate regions where null data is to be present.

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“Method for Copying Differently Formatted Records With a Field Processor,” IBM Technical Disclosure Bulletin, pp 48-50, May 1988.

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