Large network utilization leads to weird things

Arch linux works fine for a couple of days of uptime as my desktop. After a few days (there's no set amount of time), I'll start a large file transfer over NFS to my NAS. In the middle of this transfer my connection will randomly die.
"ip addr" shows eth0 has lost its network address.
"dhcpcd eth0" fails to renew the address.
Manually setting the address to its original value does not restore connectivity.
Furthermore, when I try to "reboot" or "poweroff" the system, the command stalls and no services are shut down.
I'm at a bit of a loss on how to troubleshoot this issue.

Hi,
I don’t found your server hardware model supported by Server 2012R2, you may can ask your server vendor for the future assistance, personal experience is most of the server
must enable the SR-IOV in BIOS, or must update the BIOS to the support version.
The related third party information
(PDF format):
Intel® Ethernet and Configuring Single Root I/O Virtualization
http://www.intel.com/content/dam/www/public/us/en/documents/technology-briefs/ethernet-sr-iov-microsoft-windows-brief.pdf
Hope this helps.
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