RAID is more likely to fail than a single disk. You have the chance of single-disk failure, multiplied by the number of disks, plus the chance of controller failure.

RAID 1 and RAID 5 protect against that by sharing data across multiple disks, so you can re-create a failed drive, but failure of the controller may be unrecoverable, depending on availability of new, exact-same controller. With failure of 1 disk in RAID 1, you should be able to use the array ‘degraded,’ as long as your controller still works. Depending on how the controller works, that disk may or may not be recognizable to another system without the controller.

RAID 1 disks are not just 2 copies of normal disks. Example: I use software RAID 1, and if I take one of the drives to another system, that system recognizes it as a RAID disk and creates a single-disk, degraded RAID array with it. I can mount the array, but if I try to mount the single disk directly, I get filesystem errors.

And X-windows. There’s a few server tasks that I just find easier with gui, and they feel kind of laggy over 1G. Not to mention an old Windows program running in WINE over Xwin. All kind of things you can do, internally, to eat up bandwidth.

University is ok if you’re starting at zero and don’t even know what’s out there. It’s for exposing students to a a breadth of topics and some rationale of why things are as they are, but not necessarily for plugging them into a production environment.

Nothing beats having your own real world project, either for motivation or exposure to cutting edge methods. Universities have tried to replicate that with things like ‘problem based learning,’ and they probably hope that students will be inspired by one or two of the classes to start their own out-of-class project, but school and work are fundamentally different ways of learning with fundamentally different goals.

You know that people pay taxes on the wealth embodied in their house, every year, right? Not even their equity in the house, but the full value - both the piece they own and the piece the bank still owns. Their primary residence is most of the wealth for most of the middle class, so we already have a wealth tax for everyone but the ultra-wealthy.

Tax on hoarded wealth is pressure to make that wealth do something productive. If you can’t get enough return on your invested millions to pay the tax, then you will slowly lose that wealth. Property tax works similarly for farmers and landlords.

The ultra wealthy are exactly the people who should be making big, bold, high-risk bets with their money, because they’ll be just fine if they lose a few million. Yet these are the same people who can live a comfortable, even lavish life off the lowest risk, lowest return investments, like government bonds. The rich say social safety nets discourage poor people from working, and I say that tax-free capital discourage it from working.

Also, very important to remember that wealth tax proposals generally target only wealth over a very high threshold. US proposals have been $10-50M, which seems pretty equivalent to the Spanish implementation.

I’m sure you’ll understand if the rest of us are skeptical of a guy worth $20M arguing against a wealth tax.

I mean, you’re right that restricted shares are a special problem in assessing “wealth,” but that’s why tax laws are complicated and full of loopholes.

2. What electricity costs in my area. $0.32/KWh at the wrong time of day.

I assume you have this on a UPS. What about using a smart plug to switch to UPS during the expensive part of the day, then back to mains to charge when it’s cheaper? I imagine that needs a bigger UPS than one would ordinarily spec, and that cost would probably outweigh the electric bill, but never know.

I came to MySQL and Apache because they were the backend for other services I wanted to start,. Later, when I wanted to build my own, I already had Apache running, so why would I add nginx? I did let other services add sqlite, but have (in most cases) figured out how to switch those to MySQL.

All of that has been running for 20 years. I’m sure it would be good for my dementia-risk to learn how to start ngnix and migrate all those services, but it’s far more attractive not to mess with what works.

Ditto on hardware raid. Adding a hardware controller just inserts a potentially catastrophic point of failure. With software raid and raid-likes, you can probably recover/rebuild, and it’s not like the overhead is the big burden it was back in the 90s.