单选题Which is a benefit of using the IBM DS8000 FlashCopy SE （PTC-SE）（）AFlashCopy SE （PTC-SE） is much faster than the traditional DS8000 full-volume FlashCopyBFlashCopy SE （PTC-SE） also supports background copyCFlashCopy SE （PTC-SE） is optimized for use in cases where a high percentage of the source volume is updated during the life of the relationshipDthe additional capacity required forFlashCopy SE （PTC-SE） must only be planned for data which is changed on the source volume during host I/O transaction
单选题
Which is a benefit of using the IBM DS8000 FlashCopy SE （PTC-SE）（）
A
FlashCopy SE （PTC-SE） is much faster than the traditional DS8000 full-volume FlashCopy
B
FlashCopy SE （PTC-SE） also supports background copy
C
FlashCopy SE （PTC-SE） is optimized for use in cases where a high percentage of the source volume is updated during the life of the relationship
D
the additional capacity required forFlashCopy SE （PTC-SE） must only be planned for data which is changed on the source volume during host I/O transaction
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