I'm in Canada and have been a Deezer subscriber for almost 2 decades now. Their premium subscription is well worth the money - I pay less than $90 for the year. They also have one of the highest track counts available compared to other streaming services (according to google).
From a bioinformatics perspective, the general approach is fine. Here is another post from today where someone landed on the similar technologies: https://news.ycombinator.com/item?id=47825381
To me the single nic/double nic decision is a tradeoff between simplicity and complexity, and where you want that complexity to live. A single nic may be physically "simpler" but you need additional software complexity with VLANS and a VLAN aware switch. A double nic is mabe physically more complex but it allows you to have a simpler software setup (no VLAN's)
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