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Network and workstation slowdown problems

Posted on 2007-03-30
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Last Modified: 2010-03-18
School setup with 6 servers and 350 stations (2 servers with AD).

At peak time, when students log off and on at end of lessons, when navigating to my computer , it remains blank with the search torch going back and forth.
As others stations do this at the same time I assume network problems.
Can I assume network traffic even though not sent to my machine can still freeze it up?

What is the best way to diagnose high rates of traffic , network monitor or someother tool?

On a server with a Gb card what is the max kbps I should see?

How many AD servers should I have with 350 stations?

Thanks


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Question by:harveygs
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by:thur6165
ID: 18823210
Open up performance monitor on the domain controllers and see if anything is spiking during these peek times.  That will tell you if one of the DC's are having trouble.  The number of station on a domain is relative to the power of the server.  Also, do you have any mapped drives to network locations?  This as well can cause my computer to hang when opening if your having network issues.  Is this a switched network?  If its a managed switch you can check if there are any port errors.
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by:harveygs
ID: 18823254
Yes there are spikes. I do find it hard to see if they are big or small spikes as the scale can be anything.
Our AD servers are dual core 2.8Ghz with 2Gb ram. SCSI drives. HP proliant ML370. GB cards.
One of the servers has a dual network card and with the existing card gives 3GB connection. The link to this is an aggrregated link at the switch. One leg shows 30,000 CRC errors. The others are Zero.
Four Mapped drives on the "my computers" to shared areas and "my documents". User area on the servers. No hubs.
Do mapped drives give more problem,s then, and give PC hang effects?
Thanks.
 


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thur6165 earned 500 total points
ID: 18863558
Sorry, haven't been around much.  Yes the mapped drives will cause my computer to freeze if there are network issues.  As a test I would remove alll mapped drive from your system and see what happens.  I would break that teamed link down to just the two in the dual card for now.
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