单项选择题 A customer has purchased three IBM System Storage DS8700 systems and would like to have their administrators trained.  Which training alternative provides the necessary training with the least financial impact（）

单项选择题 A customer wants to collect performance data from a newly installed IBM System Storage DS8700 to determine if the system meets expected benchmarks using their application test data.  Which tool best gathers the performance data（）

单项选择题 A customer using an IBM System Storage DS8700 is facing performance problems. After the analysis by the technical specialist， the diagnosis indicates that the cache hits may be improved by a cache upgrade.  How can the system be monitored in order to check the benefits of the cache upgrade（）