## FlashCopy virtual size

For a FlashCopy backup of logical drive data, the virtual size is the maximum size that the FlashCopy can grow to. The virtual size equals the size of the FlashCopy source drive. The actual size of a FlashCopy backup starts at 10% of the FlashCopy source. As new data are written to the source drive, the FlashCopy backup grows to the size of FlashCopy source.

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