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Server losing power at same time

By hroeder ·
Our Server has shut down 3 times at 5:27 PM on a Saturday evening, when no one is in office. It's running Windows 2000. Computer is on a dedicated power line. Building management put monitor on the line and shows no power fluctuation. There is a UPS between the Server and the power line with a half hour battery.
The only automated process on the Server that I can find is our tape backup, which I set; is set for the middle of the day, and doesn't run on Saturday.

So suggest what to look for; or if you've encountered a similar problem what solution you found.

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by jschein In reply to Server losing power at sa ...

suggest you check your windows update settings... if it says automatically download and install services... it will reboot.

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by hroeder In reply to

I'll give you credit for a good idea. But that's not the case. Checked the list, and don't show updates that correspond to the times. Besides it's 2000. Much pickier about downloading updates.

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by Joseph Moore In reply to Server losing power at sa ...

I think jschien hit this one on the head. Good thinking! That could be it, the machine getting updates and is set to reboot when done.
To make sure, check the Event Viewer logs, in Application and System, and see what is listed there right before and just after this time.
Any "bugcheck" messages, or is it just that Hotfix KB###### was installed messages?

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by hroeder In reply to

Joseph, I appreciate jschein's answer as well. But it doesn't hold true in this case. I've been through the Event Viewer logs. That's where I started, where I learned the time of shutdown. Which is reported as "Unexpected loss of power". It's a good answer I didn't think about, but, unfortunately, it isn't the answer that solves the problem. Wish it were.

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by CG IT In reply to Server losing power at sa ...

the "clue" you've given in your comment on Joe's answer says "unexpected loss of power" reported in the event views yet on the first comment you said you checked "everything" out and there wasn't a power loss including indicating that you have UPS backup. You didn't mention if your checked out your power supply on the computer to see if its going bad. If it was, then the server would end up completely down. So if you checked all that out and found nothing wrong, then, IMO this is another case of "The Unanswerable Question" .

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by hroeder In reply to

This was the first complete answer. Battery in power supply was going bad. So that, so far, has solved the problem.

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by OTL In reply to Server losing power at sa ...

Check documentation on your UPS, it may be scheduled to do a load test weekly. This would indicate that the batteries may be going bad or the UPS is not transissioning power correctly. Found out the hard way by dropping IVR services on a scheduled daily test. Some can be set for daily, weekly, or monthly load test of the batteries.

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by hroeder In reply to

This followed up on Answer 3 in detail. After checking the appropriate utility the log showed a bad battery in the UPS and it was, indeed, the load test of the battery that was kicking in the restart. Times correlated.

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by hroeder In reply to Server losing power at sa ...

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