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单选题
Which of the following functions does Hitachi Data Systems claim about the HDS USP V(Universal Storage Platform)?（）
A
scalable cache up to 32 GB with non-definable usage
B
internal bandwidth equates to increased storage performance
C
performance increases as more devices are added to FC-AL loop
D
priority I/O queuing feature is supported on both mainframe and open systems environment
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Which of the following functions does Hitachi Data Systems claim about the HDS USP V(Universal Storage Platform)?（）A、 scalable cache up to 32 GB with non-definable usageB、 internal bandwidth equates to increased storage performanceC、 performance increases as more devices are added to FC-AL loopD、 priority I/O queuing feature is supported on both mainframe and open systems environment
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Teaching.B
Research.C
Public service.D
Social charity.
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