How would be the most cost-effective way to connect two servers (NAS and VM box) over 10gbe? Direct link SFP+ cable? Is it just a matter of buying the network cards and connect them togheter using the SFP+ direct cable?
Thank you,
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Added the helpdesk tag so people know you need help.
Good luck OP!
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thanks, didn’t knew this tag
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No problem. 
Buy yourself two of these:
I’ve used them successfully, and they are cheap and pretty well supported. My only word of caution is that they do run very hot, so if you can have a fan blowing over these, that would be very ideal. If they are sitting in a 1U rack with little airflow, you might need to buy something else (not that I would know…). Any desktop case should be fine with a fan in the front.
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very nice, i think i will try this route. Yes, the servers are normal desktop cases and they have a lot of ventilation, since they have e1000 nic that runs hot as well.
Thank you very much!
For 10G and for lengths up to 5m or thereabouts, yes.
Otherwise, fiber…
You can get some cheap dual 10gbe cards on eBay I think they are 540t Intel or something should be like 100 a pop asus and a few others have some aquintia nice for $100 nee single ports. Point to point is the only way
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The mellanox ones often go for $20-30 per card, you might even be able to get 40G for the same price as long as they’re PCIe 2.0 , (40G needs a QSFP+ cable)
PCIe 3.0 cards 40G cards go for 50-100.
Be careful with card model numbers as these were popular with infiniband.
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