单选题Moving data is one of the most common causes of planned downtime. For which of the followingpurposes might the data migration function of the SAN Volume Controller be used？（）Awhen replacing an SVC node due to a failureBwhen migrating from a Windows OS to a Linux OSCwhen replacing older storage with newer storageDwhen performing a firmware upgrade on the SVC console
单选题
Moving data is one of the most common causes of planned downtime. For which of the followingpurposes might the data migration function of the SAN Volume Controller be used？（）
A
when replacing an SVC node due to a failure
B
when migrating from a Windows OS to a Linux OS
C
when replacing older storage with newer storage
D
when performing a firmware upgrade on the SVC console
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