This is starting to bug the ____ out of me, because I've looked at every solution to fix my slow network transfer problem with Windows 7, but the only thing that I've found that works is using Robocopy. The problem with using Robocopy is that I have to write up a script every time that I need to move anything larger than 50MBs around, which happens about 50 times a day, so this is not a viable option for me. I'm attempting to transfer a 2.9GB ISO from my computer to a server that is only 2 switches away on our network. As you can see in the images below, I can transfer to the server without any network problems going on. I have downloaded the latest drivers for everything on my system. I've already disabled the RDC. I've already gone through the autotune disabling as well as every other NIC tweek that I can find. So far everything I try ends up with the same issue as below. I am running Windows 7 Professional x86. If anybody has any ideas, or needs more information, please let me know.

*Bump*

The first attempted transfer is the Windows 7 robocopy, I was mistaken on my previous statement of it working properly. The second one is me pulling the data from the server that I'm attempting to go to. When I took this screenshot there was only about another 3 seconds to go before the transfer was completed.

The server that I'm attempting to send this information to is only one switch away (all gigabit, and no routers in the way.) When I was running XP I never had any problems with the transfer being slow. All of my transfers looked like the second, steady, network usage. Nothing has changed except that I've gone to Windows 7. I've been a network and system admin for close to 8 years now, so I know this is not a network issue, and I understand that the disk IO can't keep up with the network, unless it's a raid 0, 5, 6 or 10.

If you have a spare NIC lying around, could you chuck that in and see if its a driver issue with the one currently installed?physical graffiti

maybe i missed it somewhere in your brief explanation. but beyond your dissatisfaction with the first case, i don't know what you're telling us about it. what does it represent, compared to the good case? what are the different circumstances that cause them to be different? or are you saying, sometimes it is one way, sometimes the other, it's spurious and there's no predicting when or why? In the second image post above, the first section of the graph where there is the huge spike and then it drops down to 1-2% is when I attempt to move the ISO from my Windows 7 computer to a Windows Server 2003 machine. The second half of the graph where it is steady around 35-45% is when I am pulling the data on the Windows Server 2003 machine from my Windows 7 computer. Logging onto the remote computer and pulling the data from my PC is the only way that I've found to quickly get the data where I need it. This looks like there is either something wrong with the Windows 7 computer, or there is some setting that is causing it to act like it does in the very first post (huge, short spikes followed by 1-2% NIC usage.) This is also the same hardware that had Windows XP on it before, and I was able to transfer large files quickly, like I do when I'm pulling the data onto the 2003 Server. So the only difference when I attempt to push the data to the 2003 Server and getting the slow network transfer versus the quick transfer was going from Windows XP to Windows 7.

The first transfer was initiated from the Windows 7 computer (Source: 2003 Server, Dest: Win 7 PC) The second transfer was initiated from the 2003 Server (Source: 2003 Server, Dest: Win 7 PC)

so, reading from the Server works ok regardless of who initiates it. writing to the Server2003 is ok when it initiates it, but goes wrong when Win7 initiates it. That is correct, the only time this shows up is when I the Win 7 pc initiates the file transfer.

Right now I'm using the hidden admin share to move the files over to the server from my computer. So I doubt it that it's something to do with permissions, but I will take a look and see what I can find.

Hi Crazitrain, What speeds do you expect to have transferring this files from the server to windows 7? As Grit n gravy points out, you are reaching 39.8%, meaning 398Mbps, around 50 MBps. For example, the sustained throughput of SAS Disks is from 120 to 200 MBps (http://www.seagate.com/www/en-us/products/enterprise-hard-drives/cheetah-15k) SATA disks are around (http://www.seagate.com/docs/pdf/datasheet/disc/ds_barracuda_7200_12.pdf) at 125 MBps. Enjoy yourselves, Alfredo ArizaletaDisclaimer: This posting is provided "AS IS" with no express or implied warranties or rights.