NIC Teaming/Trunking

[copnas]

Hi guys,

so I have there a strange problem I realy hope you can help me out.
I created 2 RAIDs 0 (stripe) with 3 HDD's each RAID.
So lets say my first RAID 0 with 3 Hdds is named Alpha
and
my second RAID 0 also with 3 HDD's is named Beta.
Both RAID's are one the same PC.
So when I copy some ISO file's from Alpha to Beta I
get 150 MB/sec transfer speed. Thats pretty fast.

Now, may be you are asking yourself great job dude,
but tell us what has all this to do with networking.

Here it comes:

I will move RAID Beta to another pc and will do the copy paste
process again just this time it will go through the 1Gbit lan cable.
That means copy from PC1 Alpha and paste to PC2 Beta through
1 Gbit Lan Cable

Now my transfer spead is avg. 90 MB/sec.
Everything normal until here, the 1Gbit lan card's & cable can't
transfer more. My lan card's on both sides are at almost 100% Load.

Now since my hard disks are faster than my network I have to
raise my network lan bandwith.
To do so I will plug on each pc one more nic and I will team them
so I have on each Pc a 2 Gbit Connection.
Inbetween of the 2 pc's is a 16 port 1gbit switch linked.

Now if I sart copy paste again I should have more than
90MB/sec transfer rate, since my network now has the ability to transfer aprox.
200 MB/sec (I said aprox.) and my hard disks have defenetive the ability to transfer 150 MB/sec.

The problem is that the transfer rate is still 90 MB/sec.
My network load is now at 50% but for some strange reason
I cant get it to transfer data higher than 90 MB/sec.
It is like the 2gbit network is fake since it didn't make any
changes on the transfer. Why it doesn't transfer faster?



If somebody can, help me please.

 

[arael]

Two network cards in the same computer will not be able to work on the same network at the same time using client OS.

Windows Server is able to do it, as long as you're willing to purchase third party software to enable teaming/load balancing.

 

[copnas]

Sorry I forgot to mention I have Windows server 2008 64 bit r2 so in this case yes it is possible and I installed also realtek teaming software. Right know I have on both of my systems a 2Gbps network card (2 Realtek Gbit nics tight together with teaming software from realtek) and both are comunicating to each other properly since I copy paste files from one to other and I have full acess to the workgroup to other pc's. Taskmanager shows 2Gbps Local Area connection so I guess I can trust Taskmanager that teaming worked. The problem is that I cant transfer data faster than 90 MB/sec. Is there any restriction in windows or do I have to do some tweak to raise the datatransfer Limit?
Please help.