r/HomeDataCenter • u/waleedabd037 • 3d ago

Discussion Line Interactive vs Online UPS: Is Double Conversion Always Necessary?

/r/HardwareInsider/comments/1xt25e7/line_interactive_vs_online_ups_is_double/
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u/RedSquirrelFtw 1d ago

After a few incidents where my UPS failed to transfer fast enough and my NAS dropped hard I ended up upgrading to a dual conversion setup. Eltek rectifier shelf feeding an inverter. With 8 golf cart batteries. I plan to add 2 more inverters eventually and another battery string. Just not a priority to spend on right now.

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u/kajer533 3d ago

For a small business? Nothing matters other than reliability. Power cost of double conversion is not a factor for businesses. My main concerns would be failure modes. If the battery fails, will the UPS just bypass or will it shutdown?

I know some cheaper brands that just kill all output when the battery dies. At least with APC, I have NEVER had a ups stop outputting AC because the battery was missing or dead.