The first time we tested cutting the power back in the day, the backup generator didn't fire! Turns out someone had pushed the big red stop button, which remains pushed in until reset.
That would have been a major problem if we'd had a nighttime power outage.
After that we ran regular switchover testing :)
The other time we ran into trouble was after someone drove a car into the local power substation. Our systems all ran fine for the immediate outage, but the power company's short term fix was to re-route power, which caused our voltage to be low enough for our UPS batteries to slowly drain without tripping over to the generator.
That was a week or two of manually pumping diesel into the generator tank so we could keep the UPS batteries topped up.
We were once enjoying a nice picnic in a park when it started raining bees.
It turned out their was a drone above us attracting bees (not sure if it was the sound or if it had disturbed something), and every time a bee got struck by a propeller it would fall down onto us.
So a flamethrower may not even be necessary! Poor bees :(
I live in the antipodes (near the ozone hole), am fair skinned, burn easily, and have had low vitamin d levels when I've had them checked.
I cover up or am very careful with sunscreen when the UV is high, then try to do the opposite (no sunscreen, lots of exposure) when UV is at lower levels. The idea is to generate vitamin d at safer times while avoiding skin cancer.
It goes against mainstream advice that no sun exposure is good exposure, and that getting a tan is not healthy. However I never "tan" my hands and they don't look any darker, but I've never burned them, even though they're the place that will get the most sunscreen rubbed off. Ditto for feet.
I've been living in Australia and New Zealand, and have been terrified of sun exposure - during peak times (summer mid-day) it's scary how quickly you can burn.
However I also have low vitamin D.
My current strategy is to check the UV levels (I've got a widget on my personal dashboard) and whenever the UV levels are moderate or below, I try to get as much sun exposure as possible - shorts and t-shirt, or topless.
I then cover up when the UV levels are demonstrably high.
My theory is that low levels of exposure are very good - you get your vitamin D, whatever else you need, and your body starts to build an appropriate amount of melanin.
The worst thing to do is to avoid sun all the time, then suddenly get massive UV doses.
I've noticed that my hands very rarely get burned compared to other areas - my theory is due to constant exposure that part of my body is more resistant compared to the pasty areas.
My key point is that you can view the UV rating and protect yourself appropriately - e.g. high caution summer-midday, zero caution winter mid-day.
Not extremely unlikely if they were identical drives from the same manufacturing batch. It's good practise to use diverse manufacturers or at least batches when adding disks to a raid array for just this reason.
I made a command line music playing frontend. It has a list of all my music as a flat text file, then if I run "music" it shuffles randomly, or I can add a regex as an argument to pick the files from the list. It works surprisingly well - given my folder structure I can just type in "music <artist>" or "music <genre>" or "music <specific song>" and it just does it. It also has a flag for turning shuffle mode on or off.
Very simple, but very comfortable for me.
I also created my own TODO / dashboard app, where all tasks are on a schedule (do this every x days) and I can enter a value each time I complete a task. These then show up as graphs on my dashboard - helpful for tracking weight etc. I also graph a bunch of random things automatically in the same system (how many unread emails I have).
It also tracks how many tasks are overdue so I can measure my general ability to get stuff done, and if it gets overwhelming I can tweak the settings so it just shows me a few things (or more realistically I tweak the task to either not need doing/tracking, or I slow down it's cadence).
That would have been a major problem if we'd had a nighttime power outage.
After that we ran regular switchover testing :)
The other time we ran into trouble was after someone drove a car into the local power substation. Our systems all ran fine for the immediate outage, but the power company's short term fix was to re-route power, which caused our voltage to be low enough for our UPS batteries to slowly drain without tripping over to the generator.
That was a week or two of manually pumping diesel into the generator tank so we could keep the UPS batteries topped up.