Management of point-in-time copy relationship for extent space efficient volumes

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9858180
SERIAL NO

14696088

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Abstract

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A storage controller receives a request to establish a point-in-time copy operation by placing a space efficient source volume in a point-in-time copy relationship with a space efficient target volume, wherein subsequent to being established the point-in-time copy operation is configurable to consistently copy the space efficient source volume to the space efficient target volume at a point in time. A determination is made as to whether any track of an extent is staging into a cache from the space efficient target volume or destaging from the cache to the space efficient target volume. In response to a determination that at least one track of the extent is staging into the cache from the space efficient target volume or destaging from the cache to the space efficient target volume, release of the extent from the space efficient target volume is avoided.

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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
Brown, Theresa M Tucson, US 114 950
Grusy, Ellen J Tucson, US 17 95
Gupta, Lokesh M Tucson, US 542 3377
Hatfield, Brian D Tucson, US 31 190
Lovrien, Kurt A Tucson, US 35 218
Mellgren, Carol S Tucson, US 115 790
Saba, Raul E Tucson, US 31 213

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