System restart at power Phase shift

You did not provide very much information, but maybe one of these questions will get you started with a solution.

1. Are these systems connected directly to the UPS all the time or are they switched when power is lost? That is, do the systems that need uninterruptible power have individual UPS or do you have a backup power system for your office? Any switching delay will cause system restarts. Power your critical systems through dedicated UPSs connected to mains power. This will hold them on-line long enough for power to be restored or for you to shut them down properly.

2. Some smaller UPSs have two types of outlets: "Filtered power" and "UPS". Make sure devices that should have continuous power are connected to the "UPS" outlets.

3. Make sure your server UPS has sufficient capacity to power the server and is powering only your server. If the UPS is big enough, you can also connect your network equipment (router, switches, hubs, etc.) to this UPS.

4. Are the systems actually rebooting or are you just losing connectivity because your network equipment is not on UPS? Get a dedicated UPS for your network equipment, if you can.

5. [b]Make sure your users have not connected printers to the UPSs![/b]

I hope this helps solve your problem.

Edit: formatting

Try the "Questions" forum; the "Discussion" forum is for matters of general discussion, not specific problems in search of a solution.

Post problems such as this to the "Question" forum, rather than the "Discussion" forum. There are those who specifically seek out problems in need of a solution, and that's where they go to look for such.

Additionally there are the benefits that:

1) The "Questions" forum provides for your feedback, by way of your being able to mark "helpful" responses as such. This does not necessarily mean that a given response contained the complete solution to your problem, but only that it served to guide you toward it. This is intended to serve as an aid to those who may in the future have a problem similar to yours, so that they might have a ready source of reference available, thereby perhaps obviating the need for them to repeat questions previously asked and answered.

2) The revised TR makes it quite difficult to find both "Discussions" and "Questions" that have not had a fairly recent post, owing to some functions comingling them in the listings. By keeping each type in their respective forums, it is easier for all to find what they are looking for.