Replicating tracks from a first storage site to a second and third storage sites

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United States of America Patent

PATENT NO 9857997
SERIAL NO

14738821

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Abstract

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Provided are a computer program product, system, and method for replicating tracks from a first storage to a second and third storages. A determination is made of a track in the first storage to transfer to the second storage as part of a point-in-time copy relationship and of a stride of tracks including the target track. The stride of tracks including the target track is staged from the first storage to a cache according to the point-in-time copy relationship. The staged stride is destaged from the cache to the second storage. The stride in the cache is transferred to the third storage as part of a mirror copy relationship. The stride of tracks in the cache is demoted in response to destaging the stride of the tracks in the cache to the second storage and transferring the stride of tracks in the cache to the third storage.

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Patent Owner(s)

  • INTERNATIONAL BUSINESS MACHINES CORPORATION

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Benhase, Michael T Tucson, US 240 2846
Gupta, Lokesh M Tucson, US 542 3373
Hatfield, Brian D Tucson, US 31 190
Spear, Gail A Tucson, US 58 901

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