netfox Posted October 27, 2020 Share Posted October 27, 2020 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 Quote Link to comment
JonathanM Posted October 27, 2020 Share Posted October 27, 2020 What is your power draw during parity check? Quote Link to comment
netfox Posted October 27, 2020 Author Share Posted October 27, 2020 I dont know the draw during parity check, since I havent assembled the server yet. Quote Link to comment
JonathanM Posted October 27, 2020 Share Posted October 27, 2020 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 1 Quote Link to comment
severalboxes Posted October 27, 2020 Share Posted October 27, 2020 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. Quote Link to comment
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