Павел
Не спец, но обычно в этом месте находится порт для инженера поддержки с фиксированным IP
With the Flex Port feature enabled, the MGMT port on either controller version is now capable of iSCSI front-end traffic. When paired with the REPL port (also running the iSCSI protocol by default) –for fault tolerance –the iSCSI-based array now has a total of 4 front-end ports per controller, and the FC-based arrays can now support FC and iSCSI in a fault tolerant solution.”