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Windows Server Slow Network?

post #1 of 10
Thread Starter 
Hey guys, basically I am having an issue with a slightly older Windows Server 2003 machine that doesn't seem to be able to pull my full internet speed...Details below:

-Home internet speed is 45/4Mbps, which should translate into ~5.6MB/s download.
-I am testing this with a 100MB.test file. On my desktop (gigabit nic + cat6 wired to the router) I get the full speed.
-On a much older linux server (gigabit nic + cat6 wired to the router), I get the full speed.
-On my Windows server (gigabit nic + cat6 wired to the router), I don't. I only get ~2.8MB/s download for some strange reason....

The router is set to 1000mbps port speed and I can confirm that I manually set the D-Link NIC card to 1000mbps port speed (full duplex). The server does get better latency than my desktop and my full connections upload speed but NOT download...Anyone have any guesses as to why or troubleshooting tips? confusedsmiley.png
    
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post #2 of 10
I was going to say maybe you're having write issues to a hard drive or a RAID, but 2.8MB is pretty slow.

Got any spare network cards to test? Maybe a different cable?
    
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post #3 of 10
Thread Starter 
Harddrives are older Seagate IDE ones (120GB) but they are still 7200RPM and 32MB cache I believe so that should be able to handle even the full ~5MB/s speed...

Unfortunately, I do not have another NIC card to test with but I could try another cable. Another thought is that the Dlink gigabit card is plugged into a PCI expansion card which is plugged into the only PCI slot on the motherboard. It's a PCI 2.1 card but now I am wondering if that could have anything to do with it sadsmiley.gif
    
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post #4 of 10
Are they in RAID? Hardware or Software?

Issue may lie here.
    
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post #5 of 10
Thread Starter 
No RAID, straight IDE connection. I am pretty sure this is an issue with the network card itself and not the harddrives.

Anyway to trouble issues with the NIC under windows? I believe I have the card configured correctly through Device Manager (see OP).
    
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post #6 of 10
Quote:
Originally Posted by TrueTroop View Post

No RAID, straight IDE connection. I am pretty sure this is an issue with the network card itself and not the harddrives.

Anyway to trouble issues with the NIC under windows? I believe I have the card configured correctly through Device Manager (see OP).

Check for new drivers, updated drivers that sort of thing.

There isn't much for diagnosing a bad NIC.
    
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post #7 of 10
Thread Starter 
Thanks for the reply. Tried both the default ones Windows Server 2003 installed and the updated ones from the Dlink website and same issue sadsmiley.gif

Could it be the PCI expansion card? The older linux server's NIC is plugged straight into a PCI slot while in my new Windows server, I have to use the PCI expansion card that came with it. Could PCI as a connection interface be causing the network speed not to be 100% because of the middle man so to speak?
    
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post #8 of 10
You mean like a riser card?

Could be, I've seen some damn cheap risers.
    
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post #9 of 10
Thread Starter 
Yep, I PCI riser card essentially. It looks of fairly OK quality (Dell/Foxconn labelling on the PCB) and the NIC card is technically working in it so I know it's now faulty. In my Windows server however it goes like this, NIC card -> PCI expansion card -> PCI slot on motherboard but in my linux server, the NIC goes directly into a motherboard PCI slot. That is the only hardware difference between these 2 machines. Now, can PCI really as an interface be slowing a ~5MB/s connection down to half essentially because of an expansion card??
    
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post #10 of 10
Thread Starter 
Still trying to figure this one out....Tried switching the cable with the better working (older) linux server and no luck, STILL not pulling the full download speed frown.gif

I am convinced this is a software issue within Windows as if it was a hardware issue with the card, it would not be working at all. Below is a screenshot of running a 100MB test download on the server while monitoring the network activity via a built in Windows Server application:


http://i.imgur.com/6AT0U2A.png
    
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