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I have never been a fan of anything above 3 nines of uptime even in a business situation.
Your business will not collapse because of 10 min of downtime a week, and if it does that is not technologies fault.
I don't even bother to track my home setup.
My home server is 100% up, because I never check it and that's how it works, right?
My home server is 100% up, because I run the checks from the same machine
I didn't turn it down, so it's obviously up.
Schrödingers home server
This reminds me of a news story from the start of Covid.
https://en.wikipedia.org/wiki/COVID-19_pandemic_in_Tanzania
Trump: "If you stop the testing, the cases will go down. Drink bleach! UV buttplugs!"
USA: "Let's try another dangerously old guy for a bit, but if eggs are too expensive after a few years we'll give this guy another shot."
Hospitals? Air traffic control? Power grid operators? Like these are exceptional businesses, but they're out there.
I agree, but the number of business that have actual need for extreme uptime is insignificant compared to the number of businesses that don't but think for some stupid reason they do.
My brother is an air traffic at one of the world's busiest international airports and I can assure your their system uptime is no where close to 3 9s.
Many airports are closed at night.
Good point, but that's planned downtime.
Those do actually go down. Hospitals have to be evacuated after an earthquake, airports force all aircraft to divert or the grid has the sort of outage that gets it's own Wikipedia page and needs to be black started.
That's the point I'm making: when those examples go down unplanned, in particular hospitals and the power grid, in particular the examples you gave, those can be catastrophic events. I.e., if we ignore planned downtime, then these businesses really need five lines of reliability during the times they are expected to be up.
I agree with the overall point that the average business doesn't need five nines of availability, but I wanted to point out that there are definitely businesses that do.
Things like Cloudflare should have that.
I found the GitHub employee! 😉
Good news, I don't work for microslop.
Bad news, I work for someone worse... :(
Slopbook?
Na, they are one of our customers.
There are plentiful scenarios where 10 minutes of sequential downtime would be a critical issue. Say you're a telecoms or internet provider - even a one minute delay to a life-saving message can be enough for someone to die.
Furthermore, lots of things are interconnected now. Your business might be able to handle 10 minutes of downtime, but lets say my business relies on 12 different service providers like you, who each have 10 minutes of downtime during a week using your rationale. That could up being 2hrs of downtime each week.
99.999% is about 5 minutes and 16 seconds of downtime per year.
12 services down perfectly sequentially works out to 76 minutes per year, not 2hours per week.
Not saying there aren't applications where that can't be catastrophic, but you're scale is off for three 9 downtime.
His comment was not based on three nines, the OP is the one that brought up 10 min a week
Yes, there are some that do, I should have said that. But the number of orgs that need extreme uptime is so small compared to business that think they do need it but really don't.
Oh for sure. Not everyone is cloudflare.
I host home assistant and if anything goes down I'll notice pretty fast.