A UPS (uninterruptible power supply) is a device used to provide instant backup power to critical systems for safe shutdown in the case of a power outage.

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apcupsd on Linux does not report on APC BackUPS Pro 900

From what documentation I could find, the UPS should be (is!) supported by Linux and ought to work with apcupsd. I looked for specific problems such as the infamous Microlink protocol, and found none. ...
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Should The Plug of UPS Always Plugged?

Which is better for lifespan: Switch off the UPS and plug off or Switch off the UPS and leave it plugged in. Consider this two statements and give seperate replies: Which is better for >1 Month ...
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Is my UPS battery dead or is my UPS broken?

When the lights went out today I noticed my UPS battery didn't work. I checked the monitor and this is what I see: As you can see it says the battery has 90% but when I pull the plug, it doesn't ...
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267 views

Should I use uninterruptible power supply for an external HDD?

Should I plug in my external HDD into the UPS outlet instead of a regular outlet in the wall to prevent data loss in case of power disruption? My UPS already has a PC and a monitor on it, but I only ...
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169 views

Line Interactive UPS battery maintenance

I am going to buy a Line Interactive UPS (around 600VA/360W with one 12V/7AH Lead Acid battery - probably PowerWalker VI 650 LCD, or Cyberpower Value 600ELCD, or any other...) for my PC needs, and ...
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2k views

Protecting my PC and NAS units in the event of a power failure

The UK village where I live has what can best be described as a very flaky power supply -- I can expect a brown-out once a week, and a power cut maybe once a month. In the last-but-one power-cut, one ...
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How can I set my Windows 7 desktop with a UPS to automatically turn on after a power outage is over?

I've got a Windows 7 desktop system with an APC UPS to provide backup power during power outages. I've got the UPS connected to the system with a USB cable so that the built-in Windows power utility ...
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167 views

How important is it to keep UPS connections either filtered or not?

This question is somewhat difficult to summarize into a good title, so let me explain what I am talking about. I have a setup where an ADSL modem connects to the telephone network. The power supply ...
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63 views

Ups not going on battery

I've got a new UPS for my computer and I experienced the first power outtage today. I had previously tested the battery once fully charged by shutting the appropriate breaker down and it went on ...
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145 views

Can a consumer-level (i.e. cheap) UPS trigger a custom script on power failure on Linux?

I am essentially trying to build is a poor mans server failover solution. The non-profit organization I am part of is planning to host several web applications. In order to save on hosting costs we ...
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121 views

My UPS gets very loud when turning on the oven

My UPS starts making a rather loud noise (which sounds a bit like a very loud version of a fridge's motor) when I turn on the oven. It's also vibrating quite a bit when that happens. It's the only ...
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396 views

Why is my UPS causing my monitor to make a high pitched humming noise

I recently purchased a UPS for a new server build for my home. Since the server sits next to my desk, I figured I'd plug my Macbook and monitor into the UPS as well. That way if the power goes out, I ...
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19 views

What size UPS do I need? [duplicate]

Trying to figure out what size Uninterrupted Power Supply (UPS) I need to keep my machine on in the event of a power outage (or on long enough to save what I'm doing before shutting down). Needs to ...
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482 views

UPS shuts down when using with modem alone

I'm in a place where power cuts are very common for around 5 hours a day. I have a DSL internet connection and a PC. I recently purchased a new laptop which easily gives me 4 hours of battery backup. ...
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479 views

PC crashes with Power LED Blinking at 1 Second Interval

I have a "server" that recently has started crashing around once a week. I have yet to find a reason for the crashing but the nonrecoverable nature of the crash is unusual. The machine is standard ...
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56 views

Server Power Management

I am making a single ssh server, and unfortunately, my area suffers from frequent weather-related power outages. This is going to be a bit of a problem if I want to have a server running unless: a) I ...
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43 views

Voltage regulator

Recently a friend installed a regulator on my Mac Computer. I used it to 'safely' shut down the computer when a sudden thunderstorm occurred. The Mac in question was old by computer standards but up ...
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153 views

Will a UPS switch power off all connected loads in one action?

I am going on vacation and was going to buy a power supply cord with a disconnect switch to power OFF all my equipment, eliminating phantom load. Can I use the OFF/ON switch on my UPS to perform the ...
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273 views

Protecting Against Inrush Current

In my apartment, the main circuit breaker has a very low amperage limit of 5A (220V), with a maximum power limit of 1300W. Therefore, about 75% of the time I plug in my PC power plug, the inrush ...
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56 views

In the event of power loss how will the master UPS communicate shutdown to the slave over LAN?

I have got two Ubuntu servers running off a single UPS (APC350). The master server is connected via USB and the slave communicates over Ethernet polling the UPS every 10 seconds or so. I have set up ...
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2k views

Radiation from a UPS

In our office, there are frequent eletric shortages that harm my desktop computer, so I wanted to install a UPS. However, my office-mates pointed me to papers talking about hazardous radiation from ...
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366 views

UPS switches to battery power when plugging in devices?

Over the past week or so I've had my UPS switch over to battery power briefly when plugging in new devices (possibly limited to just AC -> DC chargers, but haven't tested anything else). I had ...
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Does the output waveform of a UPS make a difference to my PC Hardware?

I wanted to buy a UPS for my PC. I was going over some and I came across a variety of sine waves that different UPSes generate; Stepped Sine Wave Modified Sine Wave Simulated Sine Wave I know ...
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655 views

Can you use a Mac mini without a UPS?

I am using a Mac mini, 2012 model, without a UPS. My assumption is that Apple has designed a special adapter to rectify high voltage and low voltage. Is that right? If I use my Mac mini without a UPS ...
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707 views

UPS: Do i require a special extension cord for power in?

I have a couple of Tripplite UPS systems. The power in cables are bright orange and about 2 meters in length. I want to put the system on the other side of the room but for some reason the UPS keep ...
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171 views

Unknown UPS back-up issues

I have a Powercom UPS IND606A. I am staying in India having voltage range of 230. The detail explanation of problem :* When there is a powercut UPS gives back-up but it restarts the computer. ...
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Does a cable / adaptor for my needs exist? (photos)

I recently bought a UPS, however, the only outlets take this sort of connector: But, the other end of the cables is like this (right): The thing is, I really need to connect it to a power bar, ...
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694 views

Computer restarts on power failure with UPS

I am having power cut problems in my country. I am using an uninterrupted power supply with these specs waveform: modified sine wave typical 15-20ms, 30ms max My computer restarts when power goes ...
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209 views

Do uninterruptible power supply increase the life expentency of hardware?

Do UPS increase the performance or life expectancy of the hardware connected to it? What if the UPS has a built in line conditioner?
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Why shouldn't I attach laser printers or scanners to a UPS?

I have an FSP EP1000 UPS. The User's Manual says: CAUTION: NEVER connect a laser printer or scanner to the UPS unit. This may cause the damage of the unit. Why is this restriction?
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972 views

How to find a UPS for my computer? [duplicate]

Possible Duplicate: If my power supply is 700w, do I need a 700w UPS? I have a desktop that I built with a 750 Watt power supply. I'm looking to get a UPS for it and wondering if I need to ...
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170 views

Concerning repeated power outages and blackouts, what power protection device should be used for PC's and laptops?

We encounter numerous blackouts here where I live. I've heard of UPS's and other devices such as surge suppressors, etc... My question is, aside from the integrated battery (which is said to provide ...
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System connected to UPS goes to sleep short time after power is lost

I have a Win7 x64 system connected to the UPS. The UPS is capable of maintaining the system power for about 30 minutes. After I have connected the UPS, I have verified this by disconnecting the power ...
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Windows 7 goes into hibernation immediately after the UPS kicks on

I have a UPS that will power my desktop computer for 50 minutes. The idea was that if the power when out I could save/make notes on what I'm working on and then shutdown or hibernate the desktop. But ...
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Using a laptop without battery [duplicate]

Possible Duplicate: Are notebook batteries generally hot-swappable? My battery is at 50% wear and I was planning to use it on AC without the battery. I was planning to use an on-line UPS so ...
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350 views

UPS acting up after upgrading GPU

I have a second PC, hooked up to a 650VA UPS. I recently upgraded its graphics card from a Radeon HD6850 to a Geforce GTX580. When I updated the Windows Experience Index thingy, the UPS started ...
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Configure windows to notify NAS for UPS shutdown

I have a TrippLite UPS connected to my Vista box. I would like to have the Vista box notify a NAS which is also on the same UPS that it's time to shutdown. The NAS is willing to contact a "network" ...
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Is it possible to test an UPS battery without having the UPS nearby?

I just started with a new company and they have a stack of replacement batteries for UPS's located at the branch offices. The problem is, no one knows if these batteries are good or not, and the ...
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UPS turns off randomly with a constant alarm sound

I have an APC UPS that sorta does the opposite thing to what it should: it can randomly die and start screaming, cutting the power supply of my PC. The PC works fine when connected to a regular ...
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OS X - detect UPS going on to battery

is it possible to get notification from OS X (10.5 Leopard or higher) that the UPS has gone onto battery - i.e. are there any notifications or system config changes I can monitor? If it's possible ...
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Why my Computer re-starts at time of power outage?

My computer (sometimes) shuts down for a fraction of second and then restarts at time of power outage. The most weird thing happening is that when I switch off the electric supply of UPS (ie. where ...
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800 views

Is it safe to tilt a UPS battery while in use?

I've got an old UPS for which I bought a new battery. The new battery is different in size (longer). Thus it doesn't fit in the structure. However, if I keep the new battery vertically, I can manage ...
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576 views

Is the APC BR700G UPS (or similar) compatible with Active PFC power supplies?

I'm looking at getting a UPS for my home computer. So far the APC BR700G looks very promising, except for one thing: one of the reviews on Newegg says that this UPS does not work with a power supply ...
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538 views

UPS for hard drive protection

I am in a place where electricity is not ideal (old house, no ground), sometimes it occasionally shuts down and supposedly there are some spikes. I consider using UPS with the goal to increase ...
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3answers
215 views

What is the correct way to check the efficiency of an UPS?

I have a UPS made by Israeli company - Advice. I read somewhere that every few months, UPS should be checked for operability by disconnecting it from the mains, then plugging mid and high powered ...
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Periodical Powerline LAN Performance Spikes

I have some problems with my powerline LAN: The network works perfectly fine 80% of the time, but 20% of the time it is really slow. E.g. if PC1, PC2 and PC3 are playing an online game the ping drops ...
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APC ups es 700 randomly overload

First of all, I live in Italy, Europe, so keep this in mind for Volt/Watt considerations. Standard voltage in Italian apartments is 220V. In my living room I have 2 APC ups, one being an ES-550 and ...
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Can a UPS be too powerful?

Our old network admin bought the top range UPS a few months ago but never came around to setting it up and is no longer with the company. Now the old UPS broke down and needs to be replaced, but an ...
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Mac randomly shutting down with APC UPS

My Mac is randomly shutting down even though I have an APC UPS. I bought a new Mac, and the same thing is happening with this computer, so it is not a power supply issue. Any ideas? The UPS ...
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Computer shutdown unexpectedly. Can it be related to bad current?

I have a new desktop computer (Lenovo M81) that shutdowns unexpectedly. Other times, it is mouse and keyboard that become unresponding. If I put the computer to sleep and awake it, everything returns ...