nope, not sucking eggs. If i can't get this to work i will be converting my current unRaid NAS to something else and my NAS will be something that can handle these cards.
I'm pretty sure the Link state is fine ,but ill swapping transceivers to make sure its not that simple.
i've used this setup in windows, and ubuntu, SUSE, and soon on a Mac. i've checked the drivers that unraid is using and checked intels web site and everything check out.*link below
Im connected to a netgear smart switch with 4 sfp+.
everything i have probed in the CLi for link is fine. ethtool reports a link state of up, I did do it kind of fast and i noticed that the unraid network stack services take a little bit to start responding to ping after boot.
Server network setup
Intel X520-DA2 Dual Ports 10 Gigabit Ethernet Converged Network Adapter, PCI Express 2.0 x8, Low Profile
Intel E10GSFPSR Ethernet SFP+ SR Optics
Network setup
NETGEAR AXM761-10000S 10Gbps PROSAFE SFP+ LC GBIC
NETGEAR ProSAFE 24-port Gigabit Stackable Smart Switch with 4 10G SFP+ slots - 2nd
3m 60/120 triplight cable
http://www.intel.com/support/network/adapter/pro100/sb/CS-032530.htm
intels driver support site for the driver that was being used by unraid.