A.The DS8800 has a higher disk RPM than the Symmetrix DMX-4
B.The DS8800 has higher capacity with more efficient footprint than the Symmetrix DMX-4
C.The DS8800 supports FlashCopy for internal array replication
D.The DS8800 supports external virtualization

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