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SBS2003 System on HP Prolient unresponsive once per hour

Posted on 2011-04-29
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Hi,

I am running SBS2003, not R2, but fully updated, on an HP Prolient ML150 G5.  I beleive it has 8 gigs for RAM installed, although it only shows up as 4 gigs due to 32bit limitations.

The problem I am having is that once per hour the whole network seems to stall out (workstations cannot access shared drives, printers, and programs running off the server become unresponsive - and if working on the server directly the server appears to freeze up for a time).  This always happens around the turn of the hour (usually 2-3 minutes before the hour, and lasts usually for 1-3 minutes).  I have looked through my event logs, but nothing is jumping out at me - although there are quite a few application messages basically saying that the server was unresponsive at that time.  These messages are a symptom of the problem though, not the problem itself as far as I can tell.

A little more info about this server.....
 - it runs exchange (fully updated)
 - it shares files with about 6 other workstations
 - it has SAGE ACCPAC ERP installed on it - with normally only one user logged on at a time - it uses a PERVASIVE Database.
 - Kaspersky Antivirus 6
 - Choicemail Enteprise Installed (Spam blocking software)
 -  MSSQL Server is installed - allthough I am not sure what it is all used for (it was used for some previous software on the server - and I think is currently used by Kaspersky.

 My first thought was that there was a scheduled task running once per hour.   The performance monitoring task was set to being run once a day, and to be repeated once per hour (15 minutes before the hour).  I dissabled this task, but it did not make a difference.  For troubleshooting, I also dissabled VolumeShadowCopy task, even though it was not set to run once per hour. This also did not make a difference.

If you think it could be at all related (I will post this as another question if I cant find the solution myself), when I run the SBS2003 Best Practices Analizer, it comes up with one critical allert "The DNS Client is Not Configured - The DNS client is not configured to point only to the internal IP address of the server."  When I check all the workstations on the network, they all look to the server IP for DNS.  The Server NIC is configured to point to the the router.  This is a single NIC Server.  

Thanks in advance for any input.

Mike
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Question by:Mike_Plug
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andyalder earned 2000 total points
ID: 35496370
You say you have no scheduled tasks but Kapersky updater runs periodically even though it's not listed under task scheduler. I'd disable updates temporarily to eliminate that possibility.
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by:Mike_Plug
ID: 35497713
Kaspersky is set to run once per hour - thanks for the pointer.  Also, I have noticed that up2date.exe - kaspersky's update program - runs during those 'unresponsive' times.  It takes about 25-30 mb of RAM and up to about 15% of CPU.  I have changed it to run once per day, in the middle of the night, and will monitor the server for a couple days and post back.
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by:andyalder
andyalder earned 2000 total points
ID: 35501012
There is an up2date fix if that's it - http://support.kaspersky.com/faq/?qid=208282221

Regarding the DNS settings that you get the warning from with best practice analyser you should just list the server's own IP address under DNS on TCP/IP settings page, and under DNS server which is on the same machine set it to use your ISP's DNS server as forwarder.
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