SBS2003 System on HP Prolient unresponsive once per hour
Posted on 2011-04-29
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.