单项选择题
A. Global Copy
B. Metro Mirror
C. Global Mirror
D. Metro/Global Mirror
单项选择题 Which storage system is this statement describing: A high-end, disk storage system with a virtualized grid architecture designed to eliminate the complexity of storage administration and make managing storage easy.（）
单项选择题 Which IBM tape interface architecture has the best performance and distance characteristics? （）
单项选择题 Which IBM System Storage disk system is appropriate for consolidation of heterogeneous host environments including Windows, HP-UX and z/OS?（）