My BX750MI-GR has saved my precious data on two occasions. Earlier this year, my seven year old, well used waffle iron shorted, popping loudly and sparking quite brightly in the process, probably because of all the gunk that had accumulated inside its less cleanable interior over the years. That not only made my breaker trip, but also blew the 16 amp main fuse. The UPS kicked in immediately, making a klick and a beep, which felt amazing. That was my first time ever.
As for the second time, see this post.
Instructions unclear. May I interest you in some stories of the opposite subject?
So, I don’t have an UPS, but I have three short stories where my data was affected by its absence during a blackout.
First time,
btrfs zero-logcame in handy and nothing was lost. The SSD itself, however, was suddenly crashed just two weeks later.Second time my near-endgame Hollow Knight save file was irreversibly corrupted during the Zote dream fight, so I had to replay it from the beginning. Another of Zote’s dirty tricks for sure…
And the third time the entire FS was corrupted beyond all repairs. It was still capable to mount in read-only and was almost completely readable, apart from a few of cache files, but I still had to recreate the whole FS from scratch. Good thing I set up my backup just shortly before this incident!
By the way, I’ve been using Btrfs for 6-7 years, and have survived dozens of power outages, but so far only these three incidents have happened. So I take it as a success!
The SSD itself, however, was suddenly crashed just two weeks later.
Did you ever find out what caused it to crash?
Hollow Knight save file was irreversibly corrupted
Reminds of when my smart ass didn’t check whether MiSide supports Steam’s cloud backups and I did a fresh install of my system. All my progress gone. GONE.
Did you ever find out what caused it to crash?
No, I have absolutely no idea. I’ve successfully received a refund for it, though!
All my progress gone. GONE.
Spoiler
I have a UPS that I use for my digital clock that runs off of the plug. If it turns off with a power outage and the clock it remembers get desynced. Yep, it does not have an externally powered RTC. After plugging it to the UPS I never have to set it again if the clock turns off after an outage.
Is it overkill? Yes. But I go by the idea “any tech I buy MUST keep working until it dies in an unrepairable way”, and that clock is going strong for like 15 years.
Is it overkill? Yes. But I go by the idea “any tech I buy MUST keep working until it dies in an unrepairable way”, and that clock is going strong for like 15 years.
That’s just respecting your hardware. Which I in turn respect.
Used to have one for my work setup
A grand total of zero times. Was not worth it. Cause literally every app has auto save nowadays
Literally today.
We had a 10 minute power outage, first time in years.
Heard it beep, everything connected was fine.Glad I have it even though I replace the batteries more often than we have even a blip.
I used to live in a house with 1800s ceramic wiring in the walls. You bet a.UPS saved my setup more than once. I have 3 now.
Holy crap! I’d LOVE to see a picture of those wirings if it isn’t too much of a hassle for you! I’m fascinated by all things historical and I love to take quick but deep dives into how especially technology has evolved! 😁
Sounds like knob and tube in the walls. Old code terrifies me. Live-front-end switching and the like. There’s a victorian manor house near me that featured on Tom Scott and talked about having to light lamps with a bath of electrified mercury.
I’ve had my current one long enough that it became a fancy surge protector/filter/isolated circuit until I replaced the battery. Made power flickers go from rage inducing to minor annoyance.
The other day, it saved my progress in a game I was playing when the breaker tripped from the toaster oven and freezer cycling on at the same time as me playing a game. Thought the power was out so I quickly saved and exited the game before realizing the other circuit the kitchen doesn’t share with the living room was still powered.
They are nice enough that I’m considering replacing from my own pocket the one my ISP provided with the fiber modem but said they don’t support anymore when its battery died so that my internet doesn’t take a few mins to come back up when it is a power flicker. It feels great to be playing an online game through a power flicker that resets clocks but didn’t even disconnect me from my game.
It’s also nice to not have to worry about the quality of the power coming through the wall since my UPS generates its own AC waves and only uses the input power for the energy, not the phase. That has probably saved me from mystery crashes without me even noticing.
the toaster oven and freezer cycling on at the same time as me playing a game
Gotta avoid those computationally intense areas when you toast 🤣
I had no idea a UPS has all these other benefits, like stabilizing output (voltage levels, I presume?) and working as a surge protector - which in my mind should be slightly different than simply smoothing out the output, since surges can occur over greater ranges?
It does depend on the UPS. Some just connect the output to the input and attach the battery and charger to that circuit, power cuts out and the battery kicks in, replacing the input AC signal.
Others (like the one I have) just attach the charger to the input and then power the battery protected side from the battery all the time (or maybe it’s capacitors or something, I don’t really know the specifics). This produces a clean AC signal free from interference from whatever else is on the circuit (eg ever notice the lights flicker a bit when an appliance cycles on?) as well as outside factors like lightning strikes or grid overload that just slows the frequency instead of going out entirely.
It has normal surge protection but also the isolated circuit means it isn’t even directly electrically connected so surges only make it to the charger.
Before this moment I had never heard of a UPS.
OOPS
I worked as a Broadcast Manager on cruise ships and UPS banks saved our gear more times than i can count. Shipwide blackouts (and tests) are not fun things to recover from, and UPS banks acted as a buffer countless times.
That is amazing! Were you the one communicating with land/shore and other ships or were you more of a technical adviser? I can imagine your UPSs being HUGE too.
I was in charge of all onboard television production and distribution. I wasn’t involved in communication. The broadcast rooms all had two UPS systems. Half of the room was on one system and the other half on another system.
Changing the batteries was fun! /s
Cool! But, does that mean that you were employed by some television manufacturer or by the travel agency or whatever that operated the ship?
I worked for the cruise line.
Hi. Computer guy here. How many times has a UPS saved me/my clients’ machines? Too many to count- BUT
I do have a story of a UPS absolutely ruining my day if anyone is interested.
Oh, do tell what happened that day?
I do have a story of a UPS absolutely ruining my day if anyone is interested.
Don’t be a tease. Type out the story!
Okeydoke.
Walk in to my office one day, see the shop lights flickering. Not flashing- pulsing, like someone’s playing with a light switch as fast as they possibly can. “Uhoh, that can’t be good.” During the afternoon, lights flickered repeatedly over and over, in a kind of pulse- like half the waveform disappeared, over and over every maybe 15 minutes or so. I’m no electrician but I think a transformer down the road was in the process of exploding, dropping out a phase maybe?
Each time, our big APC unit with 8x addon battery packs slaved to it- (About 15U worth of rackmount battery packs) the relays cutting to battery and back to AC cycled so fast each time, a professional heavy metal drummer would have been impressed. Horrifying sound to be honest.
After this a handful of times, it happened again and this time, the APC spewed white sparks out the back of the main unit, about 4-5 feet, which meant it was blasting the plaster behind it with sparks bright enough to see them bounce off the wall and roll on the floor. I’ll be honest it looked like welding sparks and the back of the server rack looked like a fireworks show. I don’t know if you’ve ever heard this expression before, but I was “shitting purple twinkies”. Full blown panic. Brain couldn’t even compute what I was seeing.
That was the day we lost about $6,000 worth of battery backup for my office’s server rack.
INB4 “But why didn’t you go to the manufacturer for help after?” I did. APC gave us a mind-melting great offer: gigantic discount for the replacement unit, shipped for free (these things come on pallets by the way) but my drooling idiot of a boss decided calling the insurance company and getting an incredible deal from APC for a direct replacement was “too much effort”. Instead he ordered some “normy” 1500’s. We went from ~ 10,000VA of battery backup down to 2,000. Used to be we could stay up/online for hours worth of outage. Now maybe 45 minutes.
At least they’re cheap to replace cells in. Urgh.
Did you find out what happened to the mains afterwards? Curious about what would cause crazy flickers like those you described.
No, I never did.
Lightning hit the transformer outside my old wartime era apartment complex.
The sound my ups made was like a thousand angry bees.
All of my lights and fuses were blown and the ups battery melted.
But all my equipment plugged into it was fine.
Recently bit the bullet and finally bought one. Mostly to ensure my PC’s components don’t get slowly damaged by power fluctuations now that my RAM sticks are worth a significant chunk of what I bought my fucking car for, but the trigger was my cat stepping on the PC’s power strip switch a few days after my house randomly lost power (which both happened while I was using the computer, of course)
my lab has oscillating power at some locations, UPS gives stable voltage and we have not had a power supply blow since.
The main thing I’m worried about is a power surge anymore frying my electronics, having good surge protectors are imperative. I tried a UPS for a time and saw no real benefit to it save once the power went out, it allowed me to stare at the computer for a few minutes before remembering the local networking equipment also needs power.
Windows isn’t like what it was back in the XP days. It prioritizes any system writes immediately instead of holding them in memory with an edit flag on them until it gets its step in queue. This is what would lead to your OS dying after a power failure because it was holding a system file for modification. As well as fewer and better HDDs there’s less issues with concerns of head crashes on sudden power loss that it cannot reset to home.
So modern Windows mounts its filesystem for synchronous I/O by default? Don’t we need to manually sync, as with external drives? I haven’t used Windows for a long time, so I’m out of the loop.
Not fully certain, it’s been a long while since I have had to learn and know the nuts and bolts of how Windows file systems works. From some brief reading it’s made to be able to quickly and (mostly) seamlessly work with multiple devices. Save on your computer, changes will be accessible on our phone near immediately. It’s made for better file resiliency and portability.
So you have it set to sync certain files to an external drive, plug it in only once a while to do the back up, it should afford the same expedited updating as it does now. The corruption of unplugging it too soon is diminished as well. When it finishes with a write like that from experience, it’s truly finished. I still tell it to stop the USB device out of habit but it’s not going to kill the entire drive doing so like it could with XP.
I’ve had stormy weather set mine off at least a dozen times. Each time I’ve had a feeling of attaboy towards it.
I have UPSs between the wall and every expensive electronic in my house.
I think I have seven or eight now.
You must be surrounded by some real sweet transformer hum 💗
Mine are basically silent.
Sure silent in the audio spectrum but what about RFI? I put ferrite chokes on all the things.
Sic. What brand?
Cyberpower
