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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 change to smart slot / card interface

I bought a new APC SMT1000C 1000VA UPS, which has the smart card interface on the back. I was planning to reuse my old AP9606 network card, but I discovered that APC has modified the slot to block the old cards. See photos below, new card has 2…
TSG
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UPS network shutdown for Synology and ESXi, USB UPS

I have had a USB UPS for a while now and although I've never had a power outage with it and my Synology NAS, in testing it's worked great connected just with USB to the NAS. Now I've added an ESXi node that uses the NAS for storage. So in the event…
charlespick
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Splunk SNMP Modular Input

I just installed this app and found it simple to setup...but I most be doing something wrong. I've created Trap information on my two UPS devices and haven't had any luck bringing them into Splunk. I enabled SNMP, all versions and then I added the…
YouSayHello
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Dell Powervault ME4 (ME4024): unattended shutdown possible?

I'm rather new in this world of SAN devices/ESXi hypervisors and stuff. Some years ago we had had physical servers with internal storage connected to a USB/LAN UPS and whenever he had a power loss we would first trigger a clean server shutdown to…
carmik
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How can I monitor a Smart-UPS 2200 in PRTG?

This UPS is connected via a serial cable to a server. I am trying to get the temperature readings off of the sensor that is connected to the UPS and get them in PRTG. We were able to do this in the past and then when we changed the server out, we…
dasaybz
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Unplugged a working UPS by mistake. UPS made a bang noise and never turned on again

I unplugged my running UPS by mistake. The UPS was new so the batteries were fine, also the load was very low. Could it be that the breaking of the ground path lead to the destruction of the UPS? Now it won't turn on and all the fuses I can access…
Erli
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APC Smart-UPS with two battery sets: Regular switches or not?

I have a Smart-UPS 1500RM in a remote location with two battery packs. In order to maximize the lifetime of the battery packs, is it better to Use one pack until it dies and then hope that the other one is still good Switch between the two packs…
divB
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Grounding of a server rack on wheels

I have a 42HE 19” server rack which houses a bunch of equipment (UPS, PDU, server, network, ...). It has wheels so it’s easy to move and it stands on a concrete floor. The rack is out of metal and obviously the casings of the equipment are connected…
divB
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UPS and PDU options for NEMA L6-30P

I have to say I don't know enough about supplying power to a rack. So here goes: This is for a room that will host network equipment (and maybe a server), in an office. Room has: some 120VAC outlets; one 30A, 250VAC outlet. This is in the…
JDS
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NUT loses communications with the UPS

I am using NUT to monitor my UPS. I have a APC Back-UPS ES 550G, and the NUT server runs on a Raspberry Pi. I use the usbhid-ups driver, which works fine most of the time. However, after a few hours of running, it starts to broadcast messages on the…
petersohn
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Newbie to Supermicro redundant PSU

Until recently I have never had a redundant PSU or a rack server for that matter. So, I think maybe I did this wrong? I have a Supermicro FatTwin 6026TT-HDTRF (CSE-827HD-R1400B case) that comes with a 1400 watt redundant PSU. I plugged both supplies…
Robert Wooden
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Remote hard reboot using APC Smart-UPS 1500

I have a situation where every now and then a server crashes (so Powerchute software won't help) and needs a "hard reboot" - someone needs to switch it off and on again manually. It would be great to be able to do it remotely. I know there are Power…
Siim K
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Is there a UPS like devices to prevent circuit breaks during short periods of high load?

For example, let's say I have a 10 amp circuit. Under normal load the hardware only draws 6 amps. However, it is possible that the hardware could draw up to 11 amps (for instance during boot). Is there a UPS like device that provides a 15 amp…
Patrick Lorio
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APC Smart-UPS 3000 turning off but passing own test

I have APC Smart-UPS 3000 at home which I got hand and apparently when the power goes down it just shuts down instead of switching to backup. Based on how it behaves I have reasons to believe is not the batteries. Apparently there is no service…
sorin
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Server Rack, Power Strips and UPS

I would like to get rid of all the messy power cords behind our server racks by using short power cords (1's and 2's) with multiple power strips connecting to two different UPSs on separated circuits. I am also aware of the operating currents that…
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