单项选择题 An IBM XIV system with nine modules and 2 TB disks is being proposed to a customer who needs to increase disk capacity in the data center. The customer is concerned about data growth andcost after the initial purchase. Which of the following factors of the solution should be stressed to the customer to address data growth?（）

单项选择题 A customer is looking for a solution to provide high performance storage. A competing vendor has proposed a solution based on a loosely coupled model of 1Gbps iSCSI and SATA disks. What alternative solution could be proposed that is cost-effective and high-performance?（）

单项选择题 In order to cluster IBM SONAS interface nodes so that they can serve the same data, the interface nodes must coordinate their locking and recovery. This coordination is done through（）.