单项选择题

WhichofthefollowingfunctionsdoesHitachiDataSystemsclaim……

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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