Shutdown multiple servers automatically from 1 UPS

Posted on 2006-05-31
Last Modified: 2010-04-26
We currently have  3 servers using a ups.  The ups should be capable of holding these servers alive for around 5-10 minutes.  the problem is that there is only one serial port on the UPS for the "PowerOff" signal and i was wondering if there is a way for all of the servers to be shutdown safely from this 1 UPS.

The servers all use either windows server2000 or windows server2003
Question by:howardsit
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    Expert Comment

    No...only the hosting server will shutodown.  Get separate UPS's for each server.
    LVL 69

    Accepted Solution

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    Expert Comment

    Hello howardsit!

    There are multi-server cards and multi-server UPS solutions available from several vendors.  But, the most popular is APC.  Check their website for the solution that best fits your power consumption needs.

    LVL 30

    Expert Comment

    Callandor's hardware pick is good.. but I think at 3 servers're better off with a single UPS per system.  This will allow more power & uptime per server.  The breakeven value will be at 5 servers.
    LVL 32

    Expert Comment

    Another solution that is quite simply to implement is to write two services, one for the "main" system that is hooked to the UPS and another that runs on each of the "slave" systems.  The main service listens for the UPS to say "POWER FAILURE" and initiates a SHUTDOWN (or possibly a suspend) on the slave systems.  Once that has happend, it shuts itself down.

    The main system should be set in its BIOS to come back up when the power comes on.  But you have a problem with the others.  Many systems have a "WAKE ON LAN" capability where you send the "magic packet" and the system will come out of standby or will power up.  So you could send the slave systems a "WAKE" command to get them back up.

    Author Comment

    Thankyou all for your input.

    much appreciated

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