单选题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
题目内容(请给出正确答案)
单选题
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
