Nic Team network speed

Question

Hello!
There're two physical servers (Hyper-V is not installed) with two nic teams, each consisting of two 1Gb nics:
To test these teams I tried to copy two files from server1 to server2:
1) I started copying the first file and ~20 sec later started copying the second file to the same SSD (from server1 to server2)
2) I copied ~simultaneously two different files to the two different SSDs (from server1 to server2)
As shown in the picture 1 when I added the second copying the first one had stopped completely, although this SSD can tolerate transfer rate up to 350-380MBps.
Both pictures show that the total file transfer speed was less than that of a single team member (1Gbps):
0+112MBps < 1Gbps
57.1 MBps + 56.5MBps < 1Gbps
According to http://technet.microsoft.com/en-us/library/hh831648.aspx
NIC Teaming, also known as load balancing and failover (LBFO), allows multiple network adapters on a computer to be placed into a team for the following purposes:
Bandwidth aggregation
Traffic failover to prevent connectivity loss in the event of a network component failure
Test1 and Test2  show no bandwith aggregation... Are my tests wrong?
Thank you in advance,
Michael

Answer 1

P.S. In a production network it means users would read data from servers using the total amount of a team's bandwidth but write data using the bandwidth of a single team member - that's not I would ever like to have in my network.
And once again: http://technet.microsoft.com/en-us/library/hh831648.aspx
Traffic distribution algorithms
NIC Teaming in Windows Server 2012 supports the following traffic distribution methods:
Hashing. This algorithm creates a hash based on components of the packet, and then it assigns packets that have that hash value to one of the available network adapters. This keeps all packets from the same TCP stream on the
same network adapter. Hashing alone usually creates balance across the available network adapters. Some NIC Teaming solutions that are available on the market monitor the distribution of the traffic and reassign specific hash values to different
network adapters in an attempt to better balance the traffic. The dynamic redistribution is known as smart load balancing or adaptive load balancing.
The components that can be used as inputs to the hashing function include:
Source and destination MAC addresses
Source and destination IP addresses, with or without considering the MAC addresses (2-tuple hash)
Source and destination TCP ports, usually used along with the IP addresses (4-tuple hash)
I don't see in this explanation any reason for not creating balance when the sourses are different but the destination is the same...
Regards,
Michael