单选题An administrator is ordering a new Power 550. They will mirror rootvg and are concerned about single points of failure. Which of the following features should be ordered？（）ADual I/O planar， dual disk drives， dual SCSI adaptersBDual disk drive enclosures， dual disk drives， extra media bayCDual disk drive enclosures， dual disk drives and dual SCSI adaptersDDual I/O planar， extra media bay， dual disk drives
单选题
An administrator is ordering a new Power 550. They will mirror rootvg and are concerned about single points of failure. Which of the following features should be ordered？（）
A
Dual I/O planar， dual disk drives， dual SCSI adapters
B
Dual disk drive enclosures， dual disk drives， extra media bay
C
Dual disk drive enclosures， dual disk drives and dual SCSI adapters
D
Dual I/O planar， extra media bay， dual disk drives
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