expiredphoinix | Staff posted Aug 01, 2022 09:23 AM
Item 1 of 5
Item 1 of 5
expiredphoinix | Staff posted Aug 01, 2022 09:23 AM
10-Outlet APC BX1500M 1500 VA / 900W Battery Back-UPS
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It's 900w for ~5 minutes, less power draw = longer life. It's not possible to answer your specific question without knowing the draw. I have two power strips plugged in to mine, I'm running my old full tower desktop (i7-3770k w/ 1 tb ssd, 2x 4 TB hdd, 1 8tb hdd, 1070ti), small chinese mini box running an old celeron and an nvme for pfsense (firewall/internet gateway uses 8w), a cable modem, an asus ap, a synology nas (ds920+ w/ 2x 12 tb), 24" asus screen, 32" samsung 2k, an old RCA shelf stereo system wired into the desktop.
Turning off my desktop during an outage increases the time to ~25 minutes which is more than enough time for the ds920 to do a proper shutdown if needed - most outages last only seconds but they've been up to ~7+ hours. There is an alarm on the UPS, I turned it off, and an LCD that shows how much power is left etc.
There is (windows) software, but I don't use it, not sure if it can trigger a shutdown or not.
Answer:
It is in between. Though not pure sine wave, it has many little steps, vs Modified (modified square wave) which is simply 0 + 0 - 0 + 0 - 0 +... (3 status levels) A very good explanation and comparison graphs are shown at: https://linustechtips.c
I noticed some of the 1-star video reviews posted on Amazon's APC product page show the product running on carpet and throwing an overheating alarm. You may want to avoid sucking carpet lint into your UPS regardless of model.
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So useful on these UPS devices for powering small things like smart hubs.
How long (approximately) would it be able to run a home server/NAS with ~7 HDDs and no dGPU for?
Is it capable to send a shutdown signal to the OS when power is lost?
unit size compared to CyberPower, the APC is a couple of inches longer from front to back,
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https://www.costco.com/cyberpower...27
With full batteries, they will shut down after just a couple of minutes. One only has a network switch and a smart home hub on it. I returned one new one that did this this first week I had it. I didn't realize the others did the same until it was way past the return window.
I have an old APC 600 that I wired to a larger external battery, and it will keep my modem and WiFi router running for 3 hours.
"Shutdown can occur because simulated sine wave output has a power gap in each cycle. When the UPS system switches to battery current, a power supply with an Active PFC circuit may detect that power gap and shut itself down."
This would defeat the purpose of having the UPS. Even a momentary voltage drop/change that causes the UPS to kick in with battery backup could then suddenly cause this. Not going to happen in a server room, but at home if you suddenly use a hair dryer or iron in the same room, it could cause a shutdown in this case. The UPS may be more sensitive to kick in (it doesnt want to fail you, so it's proactive) vs your PSU which may survive brief drop. Meaning, if you had no UPS then your PC may have just chugged along -- but whoosh, the simulated sinewave causes your PSU to shutdown/cycle.
4x Unifi APs, Dream Machine Pro, 24 Port POE switch
6x POE Cameras
Hubitat, Smartthings, Ring Alarm Base Station
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How long (approximately) would it be able to run a home server/NAS with ~7 HDDs and no dGPU for?
Is it capable to send a shutdown signal to the OS when power is lost?
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