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I used a TrippLite UPS a few years ago. Online and true sine wave. It could back up two Windows servers for about 4 hours. I can't remember the model but it wasn't cheap.
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I’ve run APC UPSs for over 25 years - both workstation and server-rack models. I suppose there are better ones out there, but as long as APC works for me, I have no reason to try anything else.
I run a 1500 at home, which is many times greater than needed, but I’m comfortable with that size.
I understand the difference between sine and square waves, but frankly don’t really care as long as the equipment doesn’t cycle or shut down. I guess for some scientific equipment it may make a difference.
You should be sure the UPS can issue a safe shutdown command to the connected computer so as not to surprise the system.
Time is the differentiation of eternity devised by man to measure the passage of human events.
- Manly P. Hall
Mark
Just another cog in the wheel
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I believe the phrase you are looking for is Make before Break.
Effectively the unit has a few seconds of power (like a capacitor), that keeps the circuit going as it switches.
We had a unit installed like this for these very reasons. It was QUITE expensive, but it worked.
It ran our servers, phone systems, etc.
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that's a new term, I always knew those as "Off-line" ie. they don't draw direct power from the utilities as they are allways "off-line" drawing from the batteries being charged at the same time...
but yeah, those are the real expensive ones, especially as you need them to be true pure-sinewaves
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...About all the things I should be doing in my life.
It's an oughtobiography.
I should get my coat and leave.
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it's one of those out to be read as well, will start tomorrow, for sure!
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When you get a Round Tuit[^]
The less you need, the more you have.
Even a blind squirrel gets a nut...occasionally.
JaxCoder.com
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I have to admit, this took me way too long
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Damn! I wish I'd thought of that ... Excellent TotD material!
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
"Common sense is so rare these days, it should be classified as a super power" - Random T-shirt
AntiTwitter: @DalekDave is now a follower!
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Please finish it fast.
I'll waste no time reading it.
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I read his one of the history of glue - I couldn't put it down.
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
"Common sense is so rare these days, it should be classified as a super power" - Random T-shirt
AntiTwitter: @DalekDave is now a follower!
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Wow, I'm writing a book about all the furry aquatic critters I've known.
I'm calling it my otterbiography.
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I'm writing a book about linearly independent vectors.
It will be my orthobiography.
GCS d--(d-) s-/++ a C++++ U+++ P- L+@ E-- W++ N+ o+ K- w+++ O? M-- V? PS+ PE- Y+ PGP t+ 5? X R+++ tv-- b+(+++) DI+++ D++ G e++ h--- r+++ y+++* Weapons extension: ma- k++ F+2 X
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My mom is having her second cataract surgery (the first was two weeks ago), and I’ve been waiting since 9:40 AM, and it’s now 11:30 AM. The actual surgery only takes a few minutes, but the place doing it overbooks majorly. Ended up going down the road to get breakfast while waiting. Hopefully it doesn’t take too much longer.
EDIT: Ended up finishing around 12:30 PM, and we got home around 1 PM. Mom was in bed until 5 PM fast asleep. Follow up appointment tomorrow at 9:40 AM (again). She's doing well.
What do you get when you cross a joke with a rhetorical question?
The metaphorical solid rear-end expulsions have impacted the metaphorical motorized bladed rotating air movement mechanism.
Do questions with multiple question marks annoy you???
modified 27-Sep-21 21:53pm.
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Hope she is well. Stay strong.
I'll be lighting a candle for her.
Bastard Programmer from Hell
"If you just follow the bacon Eddy, wherever it leads you, then you won't have to think about politics." -- Some Bell.
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Cataract eye surgery is a simple operation.
Doctors could do them eyes closed.
CI/CD = Continuous Impediment/Continuous Despair
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Simple to them
--edit
The eye isn't a simple organ. And any surgery has risc.
Bastard Programmer from Hell
"If you just follow the bacon Eddy, wherever it leads you, then you won't have to think about politics." -- Some Bell.
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I'm sure it will go well. Best wishes for her swift and complete recovery.
/ravi
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Had cataract surgery in one eye a couple years ago. Had a fancy multi-focal lens installed. Pretty great!
Second surgery is scheduled for next month.
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Always book the first appointment of the day!
Always. Always. Always!
If you can't laugh at yourself - ask me and I will do it for you.
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It seems with cataract surgery it won't help, the wife was booked for 7;30am, when we arrived we were told it would take 2-3 hours.
Never underestimate the power of human stupidity -
RAH
I'm old. I know stuff - JSOP
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«The mind is not a vessel to be filled but a fire to be kindled» Plutarch
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Is a field of carrots really just a mass grave for snowmen?
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
"Common sense is so rare these days, it should be classified as a super power" - Random T-shirt
AntiTwitter: @DalekDave is now a follower!
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Nobody nose!
If you can't laugh at yourself - ask me and I will do it for you.
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