October 27, 20205 yr Hello, All, I am looking for a cheap UPS for my unraid server (nextcloud+home assistant+3 drives). I just need that it will send the signal to shut down the system. I was looking at this one for $50: CyberPower SX650U https://www.homedepot.com/p/CyberPower-650VA-8-Outlet-UPS-Battery-Backup-with-USB-SX650U/307498992?g_store=6679&source=shoppingads&locale=en-US Any thoughts ? John
October 27, 20205 yr Author I dont know the draw during parity check, since I havent assembled the server yet.
October 27, 20205 yr 11 minutes ago, [email protected] said: I dont know the draw during parity check, since I havent assembled the server yet. No point in shopping for a UPS until you know the max power draw of the server, and the unplanned clean shutdown time needed. Once you know the watts, and time a shutdown with all services running, find a UPS with at least double the time at the given wattage. The UPS you listed shows this... Watts Minutes 50 55.8 100 21.9 200 8.8 300 3.8
October 27, 20205 yr I've seen cheap UPS(s) kill power supplies and take motherboard and drives with them. So for me the cheapest one I would recommend is a cyberpower 850PFCLCD, the PFC models are so much kinder to the power supplies when they switch to battery backup.
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