At my work, most of our buildings are on diesel generators. Unfortunately when the power goes off, it blips for about 3 seconds for the generator to kick in; enough to take PCs offline. I have all our servers, networking, and very mission critical personnel on UPS batteries; however, a vast majority of user PCs (including my own) are not on UPS's. On average the power goes out where we are about once every 3 months or so, but there are occasionally times where it goes out more often than that. Once the generator kicks in, users can boot their PCs back up right away. I often get staff that complain when the power goes out, especially that came from elsewhere, about why they don't have UPS on their own machines. They bring up a home UPS only costs about $70, yes, but that's just for one, we have about 150 users, replacing every 3 years...
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