Im agree with you, but only when you can explain why separate nic can balance traffic better than distributed switch ressorce allocation by iSCSI protocol. One thing is reading something, completely other is to understand what is written. In firewalls example, you cant give separate nic for every protocol.....Example in one case you have 2x 1Gbit nics. In other case you have 1 x 10 Gbit nic. What you think which configuration is better. I choose 1x 10 Gbit.....And when you think all companies use this "best practice", then its far from reality. Maybe only in sci-fi movies. In reality companies have many times worse hardware and software. Some 1% have only better.
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