A storage specialist is presenting DS5300 and mentions that the maximum available cache is 64GB. The customer asks if that cache is backed up to hard drives in the event of a power outage.From the following list, which competitor is most likely also talking to this customer?（）

A. XIV system 
B. SONAS 
C. DS5300 
D. DS8700

A.throughput 
B.automatic tape reclamation 
C.3490E tape volume emulation 
D.disk and tape (physical) storage included in same frame

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