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Server crashes down

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by qsr 1 view

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We're running a NT-Server as primary Domain-Controller.

The machines works in a cooled room (max. 16-20 C?). There's a lot of space around the machine, thus the air-supply is ok. Opening the door to the room (up to 5 mins.), causes a crash of the System.

To solve the problem, we checked each hardware-components of the machine in detail - everything seems to be ok.

Is there anything else we can search for?

5 replies

by bearded_wonder

Here's a real long shot-
Are the lights off in the computer room, then turned on when when you open the door AND are the lights on the same circuit as any of the computer equipment? Maybe a bad flourescent fixture or such causing power issues?

by qsr

We have strict guidelines conerning the operation of server-rooms.
The electricity supply is non-standard. We have professional equipment in this room.
By the way, we have different machines (f. e. running Backup-Server, Clients, Fileserver) in this room. The problem occurs only at this one machine.

by bill_w

The inital, and flippant, observation is not to open the door.

One thing I can suggest is see if there is some connection between the outside temperature and the inner one.

What I mean is if there is a major difference in temperature out/in,then a sudden change in the temperature may be causing thermal contraction/expansion somewhere in the server enough to crash it.

Try relocating the server to another part of the server room (maybe not in a draught?) and see what happens.

Another idea, and I know this is a bit trivial, check the cables etc and make sure they're not the cause - I had a server once with a dodgy printer cable, that when it was wiggled the server would crash. Maybe the jarring of the door opening could be doing something?

And lastly try swapping peripherals like keyboard/mouse/monitor from one of the non-crashing servers. It may help to isolate the problem.

Best of luck.
Bill

by qsr

Thank you.
We tried to run the machine in different rooms.
Didn't solve the problem.
Second, we have similar machines in that room the phenomenon will not come up.
Using alternative peripherals won't show positive effects.

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