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Joined 1 year ago
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Cake day: September 28th, 2023

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  • You’re saying that data centers are replacing batteries constantly…just imagine the labor costs on that (and the down time), not even considering the material cost.

    I’m the tech doing the battery replacements. The big boy UPSes are typically a 3-5 year replacement cycle. Something like this:

    (I just picked the last one on my phone so not a great picture, they’re about the size of a small refrigerator)

    On rack mount and desktop style UPSes 18-36 months isn’t unreasonable. Some of the smaller UPSes, like APC 750s, go through batteries even faster. My personal theory is that they just get and stay too hot.

    There is typically zero downtime while servicing any of them, every critical system has redundant power supply and battery replacements usually don’t interrupt power output anyway. It would take multiple failures to cause any sort of significant downtime, and if it would, we just do them during scheduled downtime.








  • They’ll have to get a new SAS controller unless the RAID controller has an HBA mode. Running ZFS under a RAID controller is the best way to lose all of your data.

    ZFS is wonderful but it takes quite a bit of planning and specialized knowledge to implement properly. Your fear of a failed RAID controller is a bit much, too. I’ve had to deal with a single controller failure in 30 years of IT (and I’ve done warranty work for all of the major OEMs in corporate IT for most of those 30 years)


  • mark3748@sh.itjust.workstoMildly Infuriating@lemmy.worldAAAA
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    1 year ago

    That’s interesting, I remember reading a post to comp.os.minix about 32 years ago about a Finnish student who made his own OS. It was just a kernel that barely worked. Wish I’d known it was already dominant in the server space for over 8 years, could have gotten a head start!