单选题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 c
题目
单选题
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（）
A
using the vmstat command on the AIX servers connected via SAN to the DS8700 system
B
look at the IOPS using the DS8700
C
reading the performance reports via Tivoli Storage Productivity Center for Disk
D
generating reports using theTotalStorage Expert