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SBS 2003 intermittant slow network

Posted on 2009-07-07
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Last Modified: 2012-05-07
I recently impleneted a SBS2003 new server, replacing an old Dell WIN2000 server.  Mysteriously users are complaining that QBooks and Excel spreadsheets are taking forever to open. Workstations are freezing waiting, etc.  Old server was ABC.com as the domain, and I changed it to ABC.local and had all the workstations properly transitioned over.  Seems to happen between 8:50 and 9:30AM then it gets "better" for the rest of the day.  There are NO scheduled tasks happening in that window. Basically nothing has changed except the new much more powerful server.

The only thing I can admit to that I've read here is that I have the IP's hardcoded. Including the workstation level DNS with the server first, and a public DNS second.

They are complaining that the old server allowed them to do everything fine, and the problems started after the new much faster server.  

Where to start looking?  MANY thanks in advance.
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Question by:dgrenda
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19 Comments
 

Author Comment

by:dgrenda
ID: 24799668
Sorry Meant to assign 1000 points but could only do 500. New here.

I should mention only 8 workstations on network.
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LVL 1

Expert Comment

by:HiltonPark
ID: 24801975
Does your server have 1 or two nics. How are they Set?
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Author Comment

by:dgrenda
ID: 24802628
Server has 2 nics. Only 1 is used. I read here that using 2 is really for protection against failure of one of the nics.

Would using 2 help?  The old server had 1 nic.  
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LVL 1

Expert Comment

by:HiltonPark
ID: 24802877
You could re run the wizard just to check your settings ips dns etc
Can you confirm only one dhcp on the lan

In the past I have always setup sbs 2003 with two nic config

One nic for Lan and the other for WLan. I use the wizard to do this making sure i have Ip's and Service providers DNS to hand.

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Author Comment

by:dgrenda
ID: 24802974
Good advice, but how would that explain the intermittent nature of the problem. And the old server only used one old crappy nic.
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Expert Comment

by:HiltonPark
ID: 24803019
You mentioned problem happens in the morning. Is this when everyone is starting up Nic in the sbs server could be faulty causing slowness due to load of users starting/Logging in.

You could try the nic from the old server if its not on board atleast you have a known good variable with the old nic.

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Author Comment

by:dgrenda
ID: 24803071
I appreciate the path you are on, but that wouldn't be it. They all get in at different times.

ANy other suggested areas?
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Expert Comment

by:HiltonPark
ID: 24803073
forgot to mention you could disable current nic and enable spare  in sbs2003 box
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LVL 1

Expert Comment

by:HiltonPark
ID: 24803094
if you get the same problem then there could be a dns routing issue. are you getting any DNS events?
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Author Comment

by:dgrenda
ID: 24803137
I have workstations all with primary DNS as server and secondary as public ISP DNS.

I have server with itself as primary and Public DNS as secondary.

Only DNS error is the "update its own A rec" thing. It happens rarely.
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LVL 1

Expert Comment

by:HiltonPark
ID: 24803751
IF you accept there have been no changes to clients to cause this slow network then the common denominator is the new sbs 2003. swap nics and see if fix or same. If problem remains I would check router/switch and DNS in  SBS 2003. Failing this I would get network analyser to look for network traffic

I have had faulty client nics and bad ports in switchesw cause network problems so I do not assume unless tested as ok
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Author Comment

by:dgrenda
ID: 24804982
Ok, I will do that. I'll get back to you. Thanks for your great responsiveness on this. I appreciate it.
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Accepted Solution

by:
dgrenda earned 0 total points
ID: 24807233
Wireshark showed the problem was in a quickbooks application.  Thanks though.

I know this was a tough on to even approach.
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LVL 1

Expert Comment

by:HiltonPark
ID: 24811655
I wonder why the QB app was not causing this problem on the old server? Glad you got it sorted.
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Author Comment

by:dgrenda
ID: 24811968
The QB documentation says all you have to load is the database server for the QB database. But you actually have to load the QB program AND the database server because you have to use the program to set up the multi-user host profile on the server. Then you never run the program again. I didn't have the program loaded until I dug that little fact up.

QB is a royal pain.  Thanks again.
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Author Comment

by:dgrenda
ID: 24811973
The QB documentation says all you have to load is the database server for the QB database. But you actually have to load the QB program AND the database server because you have to use the program to set up the multi-user host profile on the server. Then you never run the program again. I didn't have the program loaded until I dug that little fact up.

QB is a royal pain.  Thanks again.
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LVL 1

Expert Comment

by:HiltonPark
ID: 24811979
Thanks for the update.
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Author Comment

by:dgrenda
ID: 24812006
Off topic, but where are you located?  It's 2:57AM here in Arizona.
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Expert Comment

by:HiltonPark
ID: 24812019
London UK 11.00am
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