Coordinating write sequences in a data storage system

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United States of America Patent

PATENT NO 8935354
APP PUB NO 20130144966A1
SERIAL NO

13560293

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Abstract

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According to one aspect of the present disclosure, a method and technique for coordinating write sequences in a data storage system is disclosed. The method includes: responsive to a primary device receiving a request to write to primary storage, receiving from the primary device a request for a sequence number; generating a current sequence number for the write; generating a first identifier indicating an identity of secondary devices writing to secondary storage based on the current sequence number; generating a second identifier indicating an identity of secondary devices writing to secondary storage based on the current sequence number and a previous sequence number; transmitting the current sequence number and the second identifier to the primary device; and transmitting the current sequence number and the first identifier to the secondary devices writing to secondary storage based on the previous sequence number.

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Patent Owner(s)

  • INTERNATIONAL BUSINESS MACHINES CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Wilkinson, John P Salisbury, GB 47 361

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