Gigabit Ethernet Speeds and Windows 2003

What should one expect to get in terms of speed with gigabit ethernet
adapters in a server using the standard 1500 MTU size? I know this would
vary from environment to environment.

During a Windows 2003 copy from one server to another server we are seeing
speeds of no more than 230 MBps at the highest. Is this a limitation of
the windows 2003 copy? Should one see more throughput than this.

Hello Eric,

It is not only the network speed, you have also the bottleneck of the harddisk
with writing the data.

Best regards

Meinolf Weber
Disclaimer: This posting is provided "AS IS" with no warranties, and confers
no rights.

> What should one expect to get in terms of speed with gigabit ethernet
> adapters in a server using the standard 1500 MTU size? I know this
> would vary from environment to environment.
>
> During a Windows 2003 copy from one server to another server we are
> seeing speeds of no more than 230 MBps at the highest. Is this a
> limitation of the windows 2003 copy? Should one see more throughput
> than this.
>

Yes, I know but this is happening on all of my server, some of my server
have the new SATA 3 GB drives which I know they are fast.


"Meinolf Weber" <meiweb(nospam)@gmx.de> wrote in message
news:(E-Mail Removed) .com...
> Hello Eric,
>
> It is not only the network speed, you have also the bottleneck of the
> harddisk with writing the data.
>
> Best regards
>
> Meinolf Weber
> Disclaimer: This posting is provided "AS IS" with no warranties, and
> confers no rights.
>
>> What should one expect to get in terms of speed with gigabit ethernet
>> adapters in a server using the standard 1500 MTU size? I know this
>> would vary from environment to environment.
>>
>> During a Windows 2003 copy from one server to another server we are
>> seeing speeds of no more than 230 MBps at the highest. Is this a
>> limitation of the windows 2003 copy? Should one see more throughput
>> than this.
>>
>
>

Do I need to make some registry changes in order to get more out of Windows
2003?

I found the following:
download.microsoft.com/download/2/8/0/2800a518-7ac6-4aac-bd85-74d2c52e1ec6/tuning.doc


"Meinolf Weber" <meiweb(nospam)@gmx.de> wrote in message
news:(E-Mail Removed) .com...
> Hello Eric,
>
> It is not only the network speed, you have also the bottleneck of the
> harddisk with writing the data.
>
> Best regards
>
> Meinolf Weber
> Disclaimer: This posting is provided "AS IS" with no warranties, and
> confers no rights.
>
>> What should one expect to get in terms of speed with gigabit ethernet
>> adapters in a server using the standard 1500 MTU size? I know this
>> would vary from environment to environment.
>>
>> During a Windows 2003 copy from one server to another server we are
>> seeing speeds of no more than 230 MBps at the highest. Is this a
>> limitation of the windows 2003 copy? Should one see more throughput
>> than this.
>>
>
>

I think I found the solution, I think I have to bump up the TCPwindowSize on
the server.

Is this a good idea to do?

"Sabo, Eric" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> What should one expect to get in terms of speed with gigabit ethernet
> adapters in a server using the standard 1500 MTU size? I know this
> would vary from environment to environment.
>
> During a Windows 2003 copy from one server to another server we are seeing
> speeds of no more than 230 MBps at the highest. Is this a limitation of
> the windows 2003 copy? Should one see more throughput than this.
>
>
>