August 31, 20205 yr Hi all, older machine that I turn on and off occasionally but now considering running full time and looking at options regarding upgrading. I may need to go down that path as some of the HDDs are old. (still some 1.5TB HDDS!) but checking if it will also reduce my power draw. Currently draws around 80w at idle with array spun down (160w spun up): Pentium G4400 Asrock Z170 Extreme6+ (With M1015 x2 or whatever they were) 18 disks in array + 2 constant spin (Docker and VM) and 1x SSD Cache I think AX860 PSU??? or something. 3 Dockers (emoncms openhab & Database one) and 1 VM (Ubuntu Server) Norco 4224 Case with original fans. It all runs fine but thinking of moving to just HDDs off the motheboard (ie 5 array) but what can I expect power wise. I know the cost to upgrade isn't going to be recouped by energy savings but..... Will it be a big reduction? What are people getting? Hope it all makes sense. Thanks, Josh
September 2, 20205 yr I have a fairly similar setup which draws about 140w idle and maybe 220w with all of the disks spun up. I think the controllers are about 7-10w each so losing those will save some power.... spun down drives are about 4-6w each from memory so again if you can consolidate to larger disks you will save some more power. At 80w idle I don't think you are going to save a lot.
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September 7, 20205 yr A HDD used less then 1 watt when spun down. Typically not much difference between idle (spinning) but not reading or writing at around 6W ... broad range here based on drive specs etc. Taking out a good number of spun down hard drives will make little difference but you will notice it when spun up. Base consumption looks about right given the spec. Stock fans could be ~20W
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