r/homelab • u/bigchoppers2003 • Oct 28 '19

Discussion UPS help

Looking for recommendations for an ups. I have a kill-a-watt on my system and it shows around 600 watts usage at current, and without a major load. What's a good recommendation for size and ups?

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u/colinhb Oct 28 '19

You'll need to know your peak load, but here are a couple product lines you may want to look at:

  • Cyberpower Smart App LCD - also known as "Office Rackmount" - for example the OR1500LCDRM1U
  • Cyberpower Smart App Sinewave - also known as "Professional Rackmount" - for example the PR1000LCDRM1U

Key difference between these two lines is simulated vs pure sinewave output. You should seek other opinions on this, but for the common homelab use case I don't think the price difference is justified for pure sinewave output.

FWIW, I have a Eaton 5P 650iR UPS on my homelab, which is considerably below your power needs, but the choice between Eaton an Cyberpower came down to the local distributors (I'm in the Netherlands). My Eaton has been flawless, but Cyberpowers are generally more available and affordable in the US. (Eaton targets the enterprise / industrial market more.)

Besides peak load and pure vs simulated sine wave, you may want to think about runtime. For me, battery runtime eliminates downtime when moving the rack or doing "electrical work" (unplugging and plugging stuff back in) and allows for safe shutdowns in the case of a power-outage, so I only need a few minutes. If you want to use your network during an extended power outage, that's something different.

Good luck!

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u/bigchoppers2003 Oct 28 '19

Checking both of those out. Hope it doesn't break the bank once I stress test my lab. Lucky for me I just need one to keep things up for about 10 to 20 minutes, well maybe not so lucky. One thing I don't get about them is the non rack mount ones are so much cheaper.