单项选择题

A customer needs 2 TB of high availability storage for eBusiness applications. Their servers arecurrently connected to two EMC Symmetrix subsystems that are running RAID 1. They want toconsolidate all of the RAID 1 storage into an IBM System Storage DS6800. Which configurationsatisfies these capacity requirements?（）

A.Two disk drive sets of 300 GB drives
B.Four disk drive sets of 146 GB drives
C.Eight disk drive sets of 73 GB drives
D.Nine disk drive sets of 146 GB drives

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