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?
I was looking at a ROG NUC like this one:
https://www.microcenter.com/product/683299/asus-rog-nuc-970-rn14srku9189aui-full-system-mini-pc_Hatchfeed
It states 330 watts under the power rating. And to be clear, this part of the build isn't going to happen for a while so I was just looking up some NUC examples. I was also looking at full 1U servers too.
But to the maximum ratings portion of your response. Even if 330 is the max, don't you want to base your predictions off of that to make sure it can handle things at max draw? Totally get that if you plan for less, chances are you won't ever hit 330 but you're banking on the possibility that you won't instead of planning for if you do?
In my experience a PC will only use its full power rating under synthetic load designed to use 100% of its computing. Even if you're gaming at 4k while compiling the Linux kernel you might hit like 70% of the power rating.