I have a strange issue occurring on a pair of Dell R720's running ESXI 6.0 at a customer location. Twice now, there has been a power failure, after which the NIC that was providing connection appears to be damaged. The tech onsite has had to reconfigure another NIC on both servers to get everything up and running again. As of yet, I have not ruled out line surges, and am doing my best to convince them to invest in a good PDU. NIC still shows up in ESXI configuration, but does not register that anything is plugged into it.
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