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Cake day: June 15th, 2023

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  • 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.











  • It’s fascinating to watch. Vance, the old-school spin doctor, using euphemism, misdirection and weaseling to not-techincally-lie (eg, we want a national “standard” for abortion, not a national ban) versus Trump who just goes all-out loud, easily disproven, total bullshit. And that side seems to like Trump better, like they’ve been trained to recognize the used-car-salesman shtick, so it makes them uncomfortable even if they don’t recognize the lies, but the loud liar just cows any chance of disbelief with sheer volume.

    I feel like there’s really interesting psychology to study there, among the…let’s say “reality challenged” population, if anyone could figure out how to recruit them.






  • They only need to throw one or two counties - Fulton or Dekalb - into chaos, and they’ve got the groundwork laid. After 2020, the legislature voted themselves the power to take over county boards of elections and immediately started investigations to show that Fulton’s board were incompetent. The state board now lets and random county official contest certification, more or less guaranteeing chaos and calls for the legislature to take over. Throw out Fulton County, and Georgia goes back to solid red.





  • 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.