单项选择题 A mainframe customer would like to receive a proposal for a mainframe storage system with 120 TB raw capacity. The  mainframe server load is not too high， and they need hard disk drives with the lowest possible power consumption to keep operating costs low. The customer will notincrease the capacity of their mainframe applications in the future but rather invest later into their System p servers.  Which of the following solutions best meets these requirements at the lowest cost（）

单项选择题 A customer has the following non-virtualized servers： - three Exchange servers， each with 2.8 TB database  - five System i Domino servers， each with 2 TB database  - 20 TB usable capacitySun/SAP cluster  - 70 TB usable capacity of System p requirement  - annual growth rate of 12 TB usable capacity per year   What is the most cost-effective solution for three years（）

单项选择题 A customer has an existing IBM System Storage DS8700 2-way model with 8 mega packs of 300 GB disks and 16 fibre ports.  How many additional fibre ports and mega packs can be installed in the base frame（）