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SBS 2008 Falling of network at random times

Posted on 2011-09-26
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Last Modified: 2012-06-21
Hi Experts,
A client of mine has SBS 2008.  It is only a 5 user site, it is a ML350 G6 with 2 500GB mirror drives.

over the past 6 months the Server seems to just go offline.  The monitor goes to sleep so i cannot see what is happening but the Server itself is still on.  The router and swith are still functional.  I cannot RDP to server or ping the server.  If i point the DNS to the router i get internet.

I have looked in the event viewer and cant see anything that is giving me a clue.

The only way i can get back on line is to hold the power button down or sometimes i have to oull the plug.

Obviously when this happens i cant acces any files on the server either.

I have also changed the power to the other connection.  Still no luck.

I was going to format and start again as i think it is operating system issue.

Has anyone seen this or can give me some clues.

Cheers
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Question by:pressure1402
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Larry Struckmeyer MVP earned 500 total points
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Servers that just zone out are probably experiences a memory leak.  The resources become exhausted and they just go into a coma.  You should see a sequence of errors surrounding this, but I have seen servers for which there were no errors logged but still the sympton persisted until the "leaky" program was removed, at which point they stopped.  AVG had a version a few months ago that would do this.

There are various ways to monitor for this, but it is time consuming and a mental challange.  Search the internet for "diagnose memory leak"
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by:pressure1402
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Thanks for the suggestion,  i have put new memory in the server now.

Fingers crossed it fixes the issue, i will keep you posted
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by:Larry Struckmeyer MVP
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You did not say how much RAM you started with, but adding more may just delay the issue untill the additional RAM is also exhausted. If you run Task Manager you can add columns to the view that show the peak memory, the page faults and so on.  This is one way you can get a bit of a check if the server is exhausting its RAM, but it is not conclusive and it will not tell you for sure what program it is.  There are definitive ways as I said in my first reply, but they are a bit of a pain.  Do the search for the techniques that I suggested.
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