单选题A customer has a mission-critical application with redundant fabrics. The customer plans to replace older EMC Symmetrix 8830 systems with an IBM System Storage DS8700 and an IBM SAN Volume Controller （SVC）. Which statement best describes the way to minimize the impact of data migration on the production environment（）Athe production environment does not require an outageBthe production environment requires an outage to install the SVCCthe production environment requires an outage to install the DS8700Dthe production environment requires an outage to remove the EMC systems
单选题
A customer has a mission-critical application with redundant fabrics. The customer plans to replace older EMC Symmetrix 8830 systems with an IBM System Storage DS8700 and an IBM SAN Volume Controller （SVC）. Which statement best describes the way to minimize the impact of data migration on the production environment（）
A
the production environment does not require an outage
B
the production environment requires an outage to install the SVC
C
the production environment requires an outage to install the DS8700
D
the production environment requires an outage to remove the EMC systems
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