Point-in-time copies in a cascade using maps and fdisks

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United States of America Patent

PATENT NO 8713272
SERIAL NO

13474647

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Abstract

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A technique for handling a FlashCopy® process includes receiving a FlashCopy® instruction for a source disk, performing a FlashCopy® point in time copy of the source disk on to a target disk, creating a map specifying the FlashCopy® point in time copy from the source disk to the target disk, creating a primary fdisk for the source disk, if one does not already exist, and creating a primary fdisk for the target disk, if one does not already exist, or, if one does already exist, converting the existing primary fdisk for the target disk into a secondary fdisk, and creating a new primary fdisk for the target disk.

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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
Agombar, John P Hampshire, GB 56 599
Beeken, Christopher B Hampshire, GB 26 365
Fuente, Carlos F Hampshire, GB 58 1010
Scales, William J Hampshire, GB 57 509

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