I've no experience with exactly this hardware constellation.
But when it comes to ethernet speed and duplex settings, the one thing I can say is use the same setting on both sides, regardless if it is auto or a fixed setting. But check if the connections woks fine by looking at the (error) counters on both interfaces if possible.
If you think and monitored that the system will not utilize more than 100Mbps, I suggest hardcoding them to 100Mbps/Full-duplex (switch and server). Hardcoded 100Mbps/Full-duplex is faster than 1000Mbps/Half-duplex if utilization is less than 100Mbps.
Take note that hardcoding 1000Mbps/Full-duplex in the switch have a downside since most server OS only support hardcoding the speed to GE (1000Mbps) but not the duplex (only auto).
If bandwidth utilization will exceed 100Mbps, auto/auto is recommended - make sure you have a good quality cable Cat 5e or Cat 6 and monitor the switch port for errors and duplex/speed mismatch.
Hello all again. I took a look further at my configs. All servers are set to auto in the NIC software. The switch is set to AUTO for duplex and 1000 manually for speed. I can change the speed back to AUTO. However, the ports/interfaces have 0 error messages in 2-3 months.
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