A customer wants to deploy a centralized storage system to support a new database. Which of the following factors should the storage specialist consider first?（）

单项选择题A customer is using Metro Mirror to mirror the company inventory database from an IBM System Storage DS8700 at their headquarters to a DS8300 at a remote site. Due to bandwidth concerns they are planning to change the mirroring mode to Global Mirroring. They have asked for assistance. What must be done to help the customer make the change?（）

A. reboot the secondary system
B. rezone the Storage Area Network switches
C. break and re-establish the mirror relationship
D. increase the buffer credits in the HBAs to reflect the new mirror relationship

单项选择题A customer plans to install ten Microsoft Windows servers, three Linux servers, and five AIX servers, with two Fibre Channel host bus adapters each as part of an IBM DS8700 implementation. What multipathing driver is required to build a redundant solution?（）

A.RDAC
B.MPIO
C.SSPC
D.SDDPCM

单项选择题A customer has two separate storage networks and is planning to implement an SVC to provide for FlashCopy between the two networks. What is the minimum number of ISL ports required?（）

A.0
B.1
C.2
D.4