I have a Supermicro X7DAE with 2 x dual core Xeon 51xx processors running Solaris 10u2 with 118855-19. It boots fine using the SATA disk and runs in 64 bit (with the 118855-19 kernel patch) but it does not recognize the on board Pro/1000 ethernet. 82563EB. It saw the device immediately after the patch was installed as PCI ID 8086,1096 but not after subsequent reboots.
I think your board will also use the Intel 5000X chipset and i/o hub with 82563EB. You may experience the same problem. I think it is common issue for Solaris/FreeBSD/Linux etc. This message posted from opensolaris.org
