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IBM System Storage DS8000 Copy Services for Open Systems by Mark Wells, Alexander Warmuth, Luiz Moreira, Flavio Gondim de Morais, Peter Klee, Jana Jamsek, Michael Frankenberg, Charles Burger, Thorsten Altmannsberger, Bertrand Dufrasne, Peter Cronauer

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FlashCopy overview
FlashCopy creates a copy of a volume at a specific point-in-time, which is also known as a Point-in-Time copy, instantaneous copy, or time-zero copy (t0 copy).
This chapter explains the basic characteristics of FlashCopy when used in an Open Systems environment with the DS8000. This chapter describes the following topics:
FlashCopy operational areas
FlashCopy basic concepts
FlashCopy in combination with other Copy Services
IBM FlashCopy SE (Space-Efficient)
IBM FlashCopy with thin provisioned Extent-Space-Efficient (ESE) ...

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