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New 2008 Server running slower than old one for users accessing files...

Posted on 2008-10-10
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Last Modified: 2011-10-19
Good morning, hoping somebody can share some insight on a problem we're having.  I've looked online quite a bit and found little that helps so far, looking for some sage advice. :)  We recently swapped out an older server (1.8 ghz, 1 gig ram) running 2000 Advanced Server.  This machine was running as our file server for the last 5 years (without incident, just eol now).  We've replaced it with a dell 2950, 8 times the ram, much  better processor, etc.  We have also installed server 2008(x64) on it and set the role to File Server.  This is all it's doing.  Problem is, it seems that some people are having noticable slowness when accessing their network drives.  Documents and folders they work in daily, where before they'd not even notice the "save" bar, now it may take 5 or 6 seconds each time it saves.  It doesn't seem to be among everyone but i think that just may be that some users work more than others or bring it to our attention when there's a problem. :)  I actually went to these users and verified their issues.  I've checked all the local settings, nic settings, etc, nothing has changed from how they were connecting last week except that new file server, so i'm inclined to believe it's something with either 2008 server or possibly the  nic on the server.  I'm using the onboard broadcom card and have it set to 1000 full auto.  I've tried running the netsh tcp autotuning=disabled command as well since i've seen that referenced in a number of spots, but no go.  Anyone have any other suggestions as to why this newer better server would be respond that much slower than the old one?  Thanks!
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Question by:MOPSC
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by:Darius Ghassem
ID: 22687612
Do you have Symantec Endpoint? Go to your Local Area Connection right-click then go to properties then click configure click the Advanced tab disable the TCP Checksum, IP Checksum, & TCP Large Send Offload.
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by:MOPSC
ID: 22687750
We don't use SE, just have regular Symantec Antivirus running.  Looking at those settings you mentnion above, i see IPv4 Large Send Offload, it's set to enabled, and IPv4 Checksum Offload which is set to x/Rx enabled, i can choose none instead of enabled on that one.  Don't see the third one though.  If i make this change it'll disconnect the nic temporarily, right?  Just asking so i know to do this after work today. :)
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by:Darius Ghassem
ID: 22688070
Yes, you will need to do a restart. There has been a couple issues with Symantec AV being on 2008. Symantec AV has been slowing down network communication and stopping network communication totally. Just disabling it didn't fully fix the issue but uninstalling it did. Can you do a print screen shot of the Advanced tab for me? I have the same Dell 2950 with 64-bit installed at one of our locations which had almost the same issue you did but it would slow down then bring all communication down with the 2008 server locking the clients up trying to access network shares.
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by:MOPSC
ID: 22688138
Exactly!  We had that same thing happen, we tested the server for a couple weeks with no problem, then this previous weekend we placed the server in production, all seemed fine.  About 11 am monday morning, all connections to it locked up.  On the server everything seemed fine, no errors in event viewer, etc, but anyone accessing it had a local pc lockup, even trying to open "my computer" would give a blank screen in response and lock the pc up.  We had to do an emergency reboot then.  Ever since then it has been working fine, other than the slowness.  We keep hoping it's not going to surprise us again like that. :)  I'm attaching a screenshot of our nic settings in general, let me know if you'd like a more detailed view.  
nic-settings.JPG
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by:Darius Ghassem
ID: 22688185
It seems you are having the same problem. Disable those settings then do a reboot when you can. If that doesn't work then I would fully remove Symantec since that was the other problem we had with a 2008 system. Our AV was SEP though. There have been other posts that I was involved with that ended up being the Symantec AV that needed to be removed. What verison of AV are you running?
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by:Darius Ghassem
ID: 22688193
Make sure if you have two NICs to do this on both. If you aren't using one make sure you disable it.
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by:MOPSC
ID: 22688229
Ok, cool, i'll give it a shot this evening.  I have the second nic currently disabled so that should be good.  We're using ver. 10.2.0.298 with scan engine 81.2.0.25.  Did you end up going with a different  version of symantec or dropping them for another vendor completely?
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Darius Ghassem earned 500 total points
ID: 22688424
Dropping the totally for Servers. We use McAfee for all of our servers throughout any site we deal with since SEP came out because of the hugs problems we had with this product. McAfee Total Protection hasn't given us one issue.
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by:MOPSC
ID: 22688450
Good to know.  I guess we'll see after this weekend if we need to put a purchase order in for it as well. :)  Thanks for your help and i'll post back once i know some results!

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by:MOPSC
ID: 22777081
Well, we've uninstalled Norton (as much as i can find), and i ran through the removal procedure the Microsoft Tech  recommended, although i found nothing else to remove... (the removal tool just opens up with a blank box and an "OK" button", so i guess it's not 2008 compatible either. :)  ).  We're now running on 8 days with no reboots after having it lock up twice in 2.5 weeks.  If we can make it till tomorrow i'll consider it good.  I've called Symantec and of course they say their product works just fine with 2008 :).  The MS Tech told me that they have had a bunch of calls like that, and it's always related to Symantec, that they've not heard any complaints on any others, and that their engineers have actually had a conference with Symantec to talk about the issue, so hopefully in a future release it'll be back to working.  Thanks for your help and i'll keep you posted if anything else breaks. :)
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