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Server Down? Have you lost AC power or do you have a dead UPS (Battery Backup Unit)?

May 11, 2011

By Douglas M. Rodgers
Field Service Manager, Sage

Every server is plugged into a UPS (Uninterruptible Power Source) to avoid AC power fluctuations which could adversely affect the operation of your server. When the wall outlet power fluctuates below acceptable levels, either a low voltage or a complete loss of power, the UPS takes over to provide power to your server. A fully charged UPS will typically provide power long enough for a temporary low voltage or power outage (approximately ½ hr of battery life.) But for an extended power outage when the battery charge is near depletion, it’s time to shut down the server and wait for power to be restored.

Here are some simple troubleshooting steps to help you isolate an AC power loss or a bad UPS unit.

  1. Make surethe UPS is powered on and it’s power cord plugged in. Check that the server power cord is plugged into the outlet of the UPS.
  2. Unplug the server power cord from the back of the UPS and plug it directly into a wall outlet; this will isolote your loss of power to the UPS or AC power failure.
  3. Contact Sage for support of your UPS unit or local power supply to restore AC power.
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