Solved

Data Transfer rate on SBS2008.

Posted on 2010-08-15
29
565 Views
Last Modified: 2012-08-13
This question is in reference to another question i have opened but would like to add in a couple question zones.
http://www.experts-exchange.com/Software/VMWare/Q_26396073.html

The basics of the question is i have a SBS2008 server running on VMware ESXi 4.1 on a windows XP client with a 10/100 NIC i can only download files from the server at around 100Kb/s.  Neither Microsoft or VMware and pinpoint the cause. I am looking for information on what the speeds should be for a SBS2008 and a XP client with a 10/100 NIC.  Please read through all the stuff we have tested and any ideas are welcome to try to figure this out!
0
Comment
Question by:tsukraw
  • 16
  • 7
  • 5
  • +1
29 Comments
 
LVL 19

Expert Comment

by:vmwarun - Arun
Comment Utility
It looks like the other VMware Experts already posted several troubleshooting methods to fix this issue.

I took a look at the updates posted on the other question and man-o-man, it seems that this particular thread has been having most of the activity in EE VMware Zone. :)
0
 

Author Comment

by:tsukraw
Comment Utility
Yes I have gotten many ideas for fixing the issue but non of them seem to work.  Even VMware seen the issue and couldn't give ideas on how to fix it.  They will be calling me back today.  It seems like no one has answers to fix the problem.
0
 
LVL 8

Expert Comment

by:PaperTiger
Comment Utility
Why not disable those network card and install a different one. See if that solves your problem. Another issue could be your physical switch. You need to verify that is not the problem.

From what I read, it seems to be a hardware issue. I have dealt with something similar before.
0
 

Author Comment

by:tsukraw
Comment Utility
I have tried a crossover cable between the server and a workstation.  It is a mix of different computer models so I know it is not one specific nic.  And the crossover should rule out the switch.
0
 
LVL 8

Expert Comment

by:PaperTiger
Comment Utility
what about the NIC on the server?
0
 

Author Comment

by:tsukraw
Comment Utility
The server has 2 physical nics.  I have tried both of them but i have not tried a different nic all together.
0
 
LVL 8

Expert Comment

by:PaperTiger
Comment Utility
I would try a different NIC. also it could be the motherboard. It's fairly easy to prove.
0
 

Author Comment

by:tsukraw
Comment Utility
That is aprt of the reason as to why i was looking for some transfer speeds other people were getting.
0
 
LVL 29

Expert Comment

by:Michael W
Comment Utility
On the SBS 2008 VM instance, can you post the following output:

netsh interface tcp show global

0
 

Author Comment

by:tsukraw
Comment Utility
TCP Global Parameters
----------------------------------------------
Receive-Side Scaling State          : enabled
Chimney Offload State               : disabled
Receive Window Auto-Tuning Level    : normal
Add-On Congestion Control Provider  : ctcp
ECN Capability                      : disabled
RFC 1323 Timestamps                 : disabled
0
 

Author Comment

by:tsukraw
Comment Utility
UPDATE!
Figured out something here!!!
If i put the client machine on Half Duplex the transfer rate is 7MB/s  If it is on Full Duplex it is slow.
I have tried this with a cross over cable from the server to the workstation as well.  Same result so that should rule out the switch as being the cause.  Any idea why this would be?  I know it is a semi simple fix go around to all the client machines and set them to half duplex but there has to be a reason this would happen?
0
 
LVL 29

Expert Comment

by:Michael W
Comment Utility
The reason I asked for the global interface settings is that under Windows 2003 and also seen under 2008, TCP Offload Engine (TOE) part of the Scalable Networking Pack can at times cause network performance issues.

Try the following configuration and see if this helps any:

netsh interface tcp set global chimney=disabled
netsh interface tcp set global rss=disabled

Reference:
http://support.microsoft.com/kb/951037
0
 

Author Comment

by:tsukraw
Comment Utility
Got the same results with both them disabled.
0
 
LVL 8

Expert Comment

by:PaperTiger
Comment Utility
Your NIC is the problem. Try a separate PCI NIC card.
0
Do email signature updates give you a headache?

Do you feel like all of your time is spent managing email signatures? Too busy to visit every user’s desk to make updates? Want high-quality HTML signatures on all devices, including on mobiles and Macs? Then, let Exclaimer solve all your email signature problems today!

 

Author Comment

by:tsukraw
Comment Utility
I have 10 computers of different types.  Plus my personal HP Elitebook laptop all get the same results with Half vs Full.  So i couldnt believe the NIC is the issue...
0
 
LVL 8

Expert Comment

by:PaperTiger
Comment Utility
I meant your server's NIC card was faulty. Install a separate PCI card, set your virtual machine to use that card and see if the problem exists.
0
 

Author Comment

by:tsukraw
Comment Utility
I have another server in my test lab with ESXI 4.1 and SBS2008.  It is a HP ML150G6.  So i has a completely different NIC and motherboard.  I got the same results.  In my test setup i have a simple un-managed GB switch.  I never noticed this in my test setup since everything is GB.  But if i set a computer to 10/100FULL in the test lab it get the same slow speed 100/HALF i get fast speed.  So would that lead to believe there is some issue with wither ESXi or SBS2008?  Since 2 completely different setups and hardware have the same identical issue?
0
 
LVL 29

Expert Comment

by:Michael W
Comment Utility
Are you using a physical NIC card or the on-board motherboard one? If physical NIC, what model/brand is it?

Also, do you have the latest VMware tools installed on the SBS 2008 platform?
0
 

Author Comment

by:tsukraw
Comment Utility
In both cases i am using the onboard NICs.  The NON lab server has dual nics onboard and i have tested with both.  

Also has the newest VMware tools installed.
0
 

Author Comment

by:tsukraw
Comment Utility
I am not sure if i mentioned this before.  I loaded a 2003 standard server on the same ESXi host.  The 2003 standard did NOT have a transfer issue with the windows XP machine.  It is only the SBS 2008 that has the speed issue.
0
 
LVL 29

Expert Comment

by:Michael W
Comment Utility
The only thing I can think of is that: 1) The switch has a bad port (or two); 2) Bad firmware for the NICs is causing communication issues; 3) The onboard/motherboard NICs are not on the VMware HCL list

0
 

Author Comment

by:tsukraw
Comment Utility
The nic is on the HCL.
There has to be a better explanation then something faulty if i have 2 completely different locations having the exactly same issue with completely different hardware.
0
 
LVL 29

Expert Comment

by:Michael W
Comment Utility
Just curious, but do you still have the same issues if you don't virtualize the SBS 2008 environment (i.e. installing SBS 2008 on the hardware instead)?
0
 

Author Comment

by:tsukraw
Comment Utility
Yes.  I just checked another setup i have where the SBS is installed on just hardware no VM.. All there computers are gig nics so never noticed it.  But if i manually set one to 100/FULL same issue.  100/HALF works just fine.  They have a 8port un-mannaged Gbit switch.
0
 

Author Comment

by:tsukraw
Comment Utility
I also have a SBS2008 running on Citrix XenServer 5.6 same results.  Slow on 100/FULL fast on 100/HALF
0
 
LVL 29

Expert Comment

by:Michael W
Comment Utility
Is any anti-virus installed on the SBS 2008 environment or are these base OS installs?
0
 

Author Comment

by:tsukraw
Comment Utility
No AV on any of them
0
 
LVL 29

Expert Comment

by:Michael W
Comment Utility
Also can you ssh to the ESXi host and run the following command:

vicfg-nics -l

Reference:
http://www.vmware.com/support/developer/vcli/vcli41/doc/reference/vicfg-nics.html
0
 

Accepted Solution

by:
tsukraw earned 0 total points
Comment Utility
Ended up setting all the computers to either 100/HALF or replaced the nics with Gbit NICs.
0

Featured Post

What Security Threats Are You Missing?

Enhance your security with threat intelligence from the web. Get trending threat insights on hackers, exploits, and suspicious IP addresses delivered to your inbox with our free Cyber Daily.

Join & Write a Comment

Possible fixes for Windows 7 and Windows Server 2008 updating problem. Solutions mentioned are from Microsoft themselves. I started a case with them from our Microsoft Silver Partner option to open a case and get direct support from Microsoft. If s…
HOW TO: Install and Configure VMware vSphere Hypervisor 6.5 (ESXi 6.5), Step by Step Tutorial with screenshots. From Download, Checking Media, to Completed Installation.
This tutorial will give a an overview on how to deploy remote agents in Backup Exec 2012 to new servers. Click on the Backup Exec button in the upper left corner. From here, are global settings for the application such as connecting to a remote Back…
This tutorial will walk an individual through the steps necessary to configure their installation of BackupExec 2012 to use network shared disk space. Verify that the path to the shared storage is valid and that data can be written to that location:…

771 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

8 Experts available now in Live!

Get 1:1 Help Now