On Thu, 2023-03-02 at 17:09 -0600, Chris Adams wrote: > Lots of the time, UPSes and generators are not actively monitored and > tested. An untested backup system is not a backup system, it's just > another point of failure! I have seen failures of big UPSes, > generators, transfer switches... you name it, even if it is "redundant", > it can (and will) still fail. I have a UPS sitting next to me, right now, in pieces, which (half) died in a most peculiar manner: A burning smell was eventually traced to it. There's no visible signs of burning, and no schematic available for the model, that I can find. A rather acrid smell, not one I'm used to with component failure, I'm beginning to suspect a large AC transformer. While running off the mains its output is a (too) low voltage, but still high enough for most switch-mode power supplies to run normally (i.e. the computer and monitor). It has some kind of AC voltage regulation built into it to deal with under and over-voltage. The AC supply was normal, at the time. But running off its battery it produces the full 240 volts it's supposed to. -- uname -rsvp Linux 3.10.0-1160.83.1.el7.x86_64 #1 SMP Wed Jan 25 16:41:43 UTC 2023 x86_64 Boilerplate: All unexpected mail to my mailbox is automatically deleted. I will only get to see the messages that are posted to the mailing list. _______________________________________________ users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@xxxxxxxxxxxxxxxxxxxxxxx Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue
