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Windows Thread, server reboot in Technical; How is the UPS connected to the server to communicate with Powerchute software? Depending on the type of UPS and ...
  1. #16

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    Re: server reboot

    How is the UPS connected to the server to communicate with Powerchute software? Depending on the type of UPS and connection it will be a specific type of serial cable for the different messaging protocols used.

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    Re: server reboot

    Usb connection.
    I think it's a problem with the ups, although it's only 3 months old and is the second we've had, the first had a battery failure after 3 weeks. When I used the server last week I noticed a warning sign very briefly appear on the taskbar like the one you get when a laptop is running on battery power and needs to be plugged into the mains.
    I'm going to disconnect the crt monitor to see what effect that has.

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    Re: server reboot

    Please please please don't use USB for UPS!!! Wherever possible, use serial...or buy with serial!

    It's stupid of APC and other manufacturers to build them into the devices tbh. If your USB driver fails or the USB root hub dies then that's it...server bounces itself.

  4. #19
    zag
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    Re: server reboot

    MS released their patches on Tue, you server rebooted itself on a wednesday! sounds a likely cause to me.

    One thing, why not just make a second domain controller out of a nice fast workstation, we did that and its so nice having a dedicated backup for logging in. If you setup DNS well, it wont make any difference if one is rebooted.

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    Re: server reboot

    If it's MS updates then set the DC to download and install updates at night. That way it wont bother anyone.

  6. #21

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    Re: server reboot

    If you can check the logs on your UPS look for high or low line voltages which sometimes force the UPS onto battery power, if only for a short period of time. Depending on how your UPS software is set up, this can sometimes cause the attached server to shutdown or reboot.

    We'd recently been having 2 of our servers shutting down on us, luckily they are both non-essential servers. On closer examination we realised it was APC network shutdown shutting them down, and examination of the logs reveiled a high line voltage at the time they shutdown.

    Both the servers that shutdown were set to shutdown immediatly on powerloss (as they are non-essential, so closing them down gives longer runtime for the rest) Changing this time to 30 seconds has stopped them shutting down for anything else except total power loss.

    Mike.

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    Re: server reboot

    Quote Originally Posted by ittech
    MS released their patches on Tue, you server rebooted itself on a wednesday! sounds a likely cause to me.

    One thing, why not just make a second domain controller out of a nice fast workstation, we did that and its so nice having a dedicated backup for logging in. If you setup DNS well, it wont make any difference if one is rebooted.
    Would that work if the DC with the FMSO roles failed ?

  9. #24
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    Re: server reboot

    Quote Originally Posted by chrbb
    I do have a crt monitor plugged into the ups, maybe I'll try having that straight to the mains and just have the server on the ups.
    If you do that, make very sure that the UPS shutdown commands are working properly. If you have a power-cut long enough to drain the batteries, you will want the server to shut down; this is very difficult to do manually if you don't have a monitor!

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    Re: server reboot

    Laptop, switch, remote desktop

  11. #26
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    Re: server reboot

    I've not disconnected the monitor yet just in case I needed to do a quick shutdown! However the monitor I use is a large 17" crt so my first job will be to change it for a much smaller one still got some 13".
    When the ups and server were installed the company didn't install powerchute, so I did but wasn't able to work out how to access the user console to set shutdown times etc. going to study apc website later today to see what the defaults are for the ups, trouble is I'm not in the school that many hours so I just have to do what I can in the time.
    Do many others in junior schools run a second domain controller?

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