单项选择题
A. when the order is placed
B. when the product is shipped
C. when the product is delivered
D. when the product is installed
单项选择题 When designing an expansion within the same data center, when is a pre-sales TDA absolutely required by IBM?（）
单项选择题 All of the following RAID levels are available on an IBM System Storage DS8700 and DS8800 with the exception of:（）
单项选择题 Which of the following is a benefit of the IBM Long Term File System (LTFS)? （）