Slow ethernet data transfer in Windows Server 2008 R2

performancewindows-server-2008-r2

When I copy a file from the workstation to the server (uploading from the WS) the data transfer is very slow, not more than 1MB/s

Also, when I do the same operation but downloading the files from the server, the data transfer is a little bit faster, but not more than 2MB/s

But when I transfer a file from the server to the workstation (uploading or downloading from the server) the data transfer is ok, about 10MB/s

I think this issue is also messing with the print service, because its also very slow.

Some info about the server:

  • HP Proliant ML150 G6
  • 100Mbps network
  • Roles and services: AD-DC, DNS, AD-RMS, Exchange 2007 SP3, SQL 2008 R2, print and file server.

I've disabled the firewall, updated drivers, firmwares, BIOS. I've turned off IPv6, I've tried the following netsh commands that I found on Google.

netsh int tcp set global rss=disable
netsh int tcp set global autotuninglevel=disable
netsh int tcp set global chimney=disable

I've tried all those and reversed the changes because nothing worked.

UPDATE:

I just installed the server 1 week ago, I remember that this problem was not bothering after installing AD-DC but before installing the exchange server 2K7… i dont remember after the E2k7 installation

After the E2k7 installation, I installed the AD-RMS role, thats when I realise the slowness of the system, and after installing the AD-RMS, I installed the SQL… so i guess the SQL isn't causing the problem.

I have had not the chance of test the transfer speed connecting the server and a WS directly, but I guess its gonna be the same slowness.

Best Answer

With that many roles installed on the server I'd be setting up a shrine and praying that it doesn't fail.

Seriously though, With that many variables it would be really hard to determine what the slowness might be attributed to. Not to mention you don't say what other hardware sits between these two devices. Is the workstation a x64 bit OS? Does it have a 100mbps NIC?

If your workstation is XP I'd be interested to hear if you can replicate those speeds on a Vista/ 7 box. SMB 2.0 used in Server 2008 / Vista/ 7 should speed things up.

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