Hey all,
Building out my lab, I was going to get a rackmount UPS. The one I'm looking at is a Cyberpower OR1500LCDRM1U. It says it offers:
1500 VA, 900 W, 120 V
Do I understand correctly that all I need to do is find the Wattage rating for each of the components I want to plug in and add them up? My components right now are pretty light, only about 120 watts total. But soon I'm going to expand and build out a Nutanix CE cluster with 3 nodes and a rack of drives. I was looking at using some NUCs but they are each rated at 330W.
So that would mean even the NUCs by themselves would over-provision the UPS right? Then on top of that I would still need all the other equipment in the rack to be powered.
Am I understanding this correctly or is there something I'm missing?
So the UPS I was looking at is here: https://www.microcenter.com/product/506629/apc-smart-connect-ups-(smc1500-2uc)
It lists VA, W, and V.
You have to look at the datasheet. It says 6 minutes at full load and 18 minutes at half. Full data can't be listed because it's a non linear curve. The website gives you a calculator at the bottom.
https://www.apc.com/us/en/product/SMC1500-2UC/apc-smartups-c-line-interactive-1440va-rackmount-2u-120v-6x-nema-515r-outlets-smartconnect-port-usb-and-serial-communication-avrgraphic-lcd/
You pay a huge premium for rack mount. You could buy 2-3 regular UPS for the price of one rack mount. I bought a shelf for my rack and have regular UPSs on the shelf. Note that you can only chain 1 ups into another without problems. So it's best to separate devices onto different UPSs or buy one that supports plugging external batteries.