Netwroked computer files transfer is slow

Posted on 2010-11-25
Last Modified: 2012-05-10
Hi experts,
I am trying to transfer all my files from my windows 7 computer to another windows 7 computer. the speed is about 10.7MB/second. my 2 computers are connected to the same switch (Netgear JVFS524) the cables connected between the swicth and the computer are Cat6 cables.

now I understand that I can't be at the speed of gigabit because of my switch , but I thought I could at least be close to 100M . copying with a USB key seems to be faster than trnafering in my LAN can someone help on troubleshooting this issue?
Question by:taverny
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LVL 10

Expert Comment

ID: 34214574
Are you on dell vostro computers by any chance?

Author Comment

ID: 34214608
no , I have a dell inspiron and a computer with a asus motherboard. why is there anything wrong with the Vostro ? I have a bunch of those at work
LVL 31

Accepted Solution

Frosty555 earned 500 total points
ID: 34214623
Is this your switch? Netgear JFS524?

If so, you're speeds are fine. The switch is limiting your computers to be linking up at 100MBPS speeds, not gigabit speeds.

100MBPS = 100 mega BITS per second = 12.5Mb/s maximum theoretical throughput.

In reality due to the overhead in the network protocol and the fact that the world isn't perfect, you can expect more like 8-10MB/s, which is exactly what you're getting.
LVL 18

Expert Comment

by:Jerry Miller
ID: 34214629
Several things that you can check, TCP Receive Window being among them. Check out and run TCP Optimizer. It will tell you your current NIC settings and give you some choices to update them for better performance.

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LVL 31

Expert Comment

ID: 34214632
On a gigabit switch, assuming both computers have gigabit ethernet cards as well, your computers will link up at 1000MBPS.

1000MBPS = 1 giga BIT per second = 125MB/s maximum theoretical throughput

However, most likely due to various overhead issues like before, you will cap at about 80-100MB/s. Your hard drive speed and the windows protocol for transferring files over the network will limit you further, and a typical expected throughput would be more like about 50-60MB/s.

TomsHardware has an interesting article on "real-world" throughput on a gigabit network:,2321-6.html
LVL 10

Expert Comment

ID: 34214654
are we using MBps and Mbps interchangeABLY??

from my understanding MBps is Mega Bytes /S
and Mbps is Mega bits /s

Author Comment

ID: 34214696
thanks for the response, I guess I didn't understand the Mb/s and MBPS . I thought I had 100Mb/s.

So If I understand it correctly I have a movie of 1000MB that I would like to transfer from one computer to another on my network  it should take about 1min and 40 sec @100MBPS (10Mb/s)

LVL 10

Expert Comment

ID: 34215963

1000 (Mega byte) MB = 8000 Mb.

Try this calculator.

Your network connection is 100Mb = 100 Mega bits.

at 100 Mbps, 1000MB will take 80 seconds.

LVL 11

Expert Comment

ID: 34231328
Try to disable anti-virus from both end (both system).

anti virus scans all packets that are transfer and receive to/from system and resulting slow data transfer speed in network.

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