Event Id 6008 Unexpected Reboot

Question

I am experiencing a problem with one of my servers - DELL PowerEdge 2850. It reboots unexpectedly, throwing a Event Id 6008 to the event log ("Unexpected Shutdown"). The issue started yesterday and has rebooted about 10 times yesterday and continued to do it through today.

There are no other events or errors that are logged in the event log just before the 6008 event. We haven't changed anything with the hardware. The only thing we have changed "software" wise, is we turned on a .NET service that we developed which runs on an identical server which has ran without any issues for 2 years. Other than that the software has remained the same. I have it set to do a kernel memory dump whenever there is a server failure but it isnt even doing that. I called tech support on it and we still don't have a solution. I have reseated the power supplies, switched the PDU that the server's power supplies are on, and I ran the full DELL Diagnostics tests (not the quick tests) and everything passed. I suggested to tech support could it be the power supplies but said no because it has two power supplies and one acts as a backup, so it can't be that.

Other notes, the servers are not on a USP - which is not ideal but that's the setup. I have two other servers in the room that run along the side with it and none are experiencing the same issues as this one server.

Has anyone experienced similar issues? Any insight or suggestions would be greatly appreciated!

Thanks!

Solution

Reverse the last thing that you did (turning on your .NET service), regardless of how it ran in the past or how it runs on another server.

Comments

[redknight]

in total agreement - after turning off the last change see if event happens again. I would also try to analyse the dump file- see if you can download the following utility nirsoft.net/utils/blue_screen_view.html. This might help you shed some light on your problem.

[GavinWoods]

I turned them off, i'll see if it still occurs. This might be a while until i get back to you, since the problem only occured twice over the weekend. @redKnight - The problem with the dump file analyzer is that it's not recording dump files, which has indicated power issue although, the other servers arent getting similar issues.

[GavinWoods]

Thank you for the feedback. I reseated the RAM and hard drives. Yeah DELL has a similar app to iLo, OpenManage, i'm going to install it now and see if it can give any more details. As for any other issues occuring, I have been seeing printer errors in the system log but they occur hours before the error so i doubt its the issue but its still a possibility.