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I recently picked up a pair of connect-x 3 cards plus a cable for 30$ total, and it’s been absolutely awesome so far.

Infiniband for homelabs is a really underrated choice, if you can source cheap cables.

I recently bought ConnectX-3 too but not arrived yet. I have been thinking to use Infiniband bit I'm afraid to use it since I heard that it works completely different from Ethernet and I am zero knowledge in that.

How's your experience in Infiniband? Do NFS/SAMBA work well without significant works?

If you use IPoIB, well of course nfs will work, it's just IP. But most Mellanox cards work in Ethernet mode just fine, why bother with IB?

Then what are the use cases of IB at home? I mean, the comments talk about IB at home, so I am really curious.

It's primarily for homelab rather than pure home use, for people who are doing professional computing at home. The underlying use case is the same as in a professional environment e.g. SAN fabrics, clusters, etc.

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