单项选择题 A customer has a storage requirement for a mixed IBM Power AIX and System z environment. They require approximately 3 TB of high performance disk for their System z environment. They require approximately 32 TB of low-performance disk for their System p environment. The storage specialist is using Capacity Magic to configure an IBM DS8700.  Which configuration is most appropriate for this customer（）

单项选择题 A customer has one mainframe and ten open system servers in their current environment. They plan to add the servers to an IBM DS8700 system with four array sites.  How many extent pools should be created to provide the best resource utilization of the DS8700（）

单项选择题 A customer has an EMC Symmetrix DMX3000 that is at the end of lease. The environment consists of IBM System p， IBM System i， and IBM System z. The customer is evaluating EMC，   HDS， and IBM storage as possible replacements. They are interested in comparing the performance of all three disk subsystems.  Which tool compares performance（）