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Questions tagged [ups]

uninterruptible power supply

An uninterruptible power supply, also uninterruptible power source, UPS or battery/flywheel backup, is an electrical apparatus that provides emergency power to a load when the input power source, typically mains power, fails. A UPS differs from an auxiliary or emergency power system or standby generator in that it will provide instantaneous or near-instantaneous protection from input power interruptions by means of one or more attached batteries and associated electronic circuitry for low power users, and or by means of diesel generators and flywheels for high power users. The on-battery runtime of most uninterruptible power sources is relatively short—5–15 minutes being typical for smaller units—but sufficient to allow time to bring an auxiliary power source on line, or to properly shut down the protected equipment.

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Source: wikipedia

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APC 2200 RM in a continual self-test! Why?

I've purchased two different used APC 2200 RM units, and both have entered into a mode where they execute a continual self-test: that is, they go on battery briefly, test, then the test comes back good, and life continues - until the next test a few…
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automatic restarting of servers

We have 5 physical servers currently in operation. Two of them are virtualised and other 3 terminal servers are normal servers running 2003 servers and XP. After a power failure, virtualised servers( Esxi) restarted automatically while terminal…
ryju
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Rack mounted UPS failure

During a recent power fialure our rack mounted UPS failed after 17 minutes( design time 30 minutes). How often should a rack mounted UPS be tested?
mac
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ups to give few minutes for about 20 PCs and 10 Printers

We've a problem in the electricity current for three months right now, I was tasked to get the best solution, and it should be cost effective also, for allowing our application users to save and shutdown their PCs, and complete the printing jobs…
Mustafa Magdy
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Noisy Dell Rack UPS 1000W

Just installed our new DELL Rack UPS 1000W and its very noisy. The fans are always spinning even with nothing attached and with the UPS turned off. Will they one day slow down or stop spinning? We have the rack enclosure in the office and can't…
abenci
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Shutting down ESXi on Battery Backup

Possible Duplicate: PowerChute for VMware ESX4 I came into an issue where I have an APC that doesn't have a network shutdown card in it. I figured I can map the USB connection over to one of my hosts, install the software, and if there is a power…
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Battery backup for Workstation & Printer

I have been tasked with finding a price for a battery backup solution for our printers. Each printer is listed at 240v 24a <5.5kW and each workstation is using a 500w power supply. We are probably going to add more batteries to our existing UPS to…
David Houde
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Mac OS X Server - UPS battery level stuck at 0% despite fully charged

I am running a Mac OS X Server 10.5.8 and have a APC Smart-UPS 1500 connected to the Mac via USB. My Mac server correctly sees that the UPS is connected but fails to read the correct battery level of the UPS. I have tried everything I can think of…
Scott
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ups and an unconfigured server

Say I have got a big room loaded with servers and a big cupboard size battery as a ups. Now the electricity fails. Is there some way for the servers to know that they should shutdown? Does the ups send some network broadcast to all the severs? Is…
hans sausage
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UPS RJ11 cabling

I'm connecting extra battery Evolution S EXB 2500/3000 with UPS Evolution S 3000 but I do not know what type of cable to use. Typical RJ11 cable does not work (extra capacity is not recalculated, still the same). It has to be rollover cable or…
John
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APC Smart UPS network shutdown issue

Here is a bit about our setup: We have 2x Smart-UPS RT 6000 XL units with network management cards We are running Powerchute from a network server Powerchute is connected to the management cards of both UPSs UPSs are set to do a graceful shutdown…
Rob Clarke
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Graceful Shutdown of Ubuntu Machine with APC UPS - Network to USB Cable

So I have two APC UPS devices: Back-UPS ES 500 and 725. These two UPSes work fine but recently we had an extended outage and both of our servers connected to these UPSes shutdown and one of them had a RAID Drobo that suffered disk damage. Now I…
nicorellius
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Can somebody recommend a UPS which would allow me to powercycle devices via IP?

I need to purchase a UPS which I can manage remotely and powercycle individual items on via some sort of IP interface. The unit doesn't need to be that powerful, 750 Va would suffice, but the IP interface is extremely important. Thanks in advance.
WorkInProgress
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Any software to stub mails from a firmware with no smtp password capability?

We have a MGE U.P.S. (Evolution S 3000) with the ability to send mails when power down occurs. The thing is that the firmware settings doesn't allow to send using smtp accounts requiring password and our system requires it. Anyone knows about any…
FerranB
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APC - SmartUPS RT 5000 Configuration

I hope this is an easy one for someone! We have a SmartUPS 5000 in our rack. At the moment, it looks like it's just been configured by our old IT support company to email them when it kicks in (not too useful). I'd like to get it to shut down the…
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