jimmyz Posted March 3, 2013 Share Posted March 3, 2013 If I am going to connect 16 hard drives to a HX750 in a Norco 4020 case does it matter how many modular connections I use? My case has five SATA backplanes that have 1 molex power connector that provides power to four drives each. I could connect one cable from the HX750 and then connect that to 4 of the backplanes, effectively running 16 drives off a single modular cable connection to the power supply. OR I could connect four cables from the HX750 to each of the 4 backplanes, effective running 4 drives off each modular cable connection to the power supply. Does it make a difference if I am running 16 drives off of 1 modular power cable or 4 modular power cables? Would either one be handled the exact same way by the power supply? Thanks! Link to comment Share on other sites More sharing options...
jimmyz Posted March 5, 2013 Author Share Posted March 5, 2013 Anyone know? Thanks! Link to comment Share on other sites More sharing options...
nanotm Posted March 5, 2013 Share Posted March 5, 2013 each of hte modular cables has a fixed number of power connectors on it for components, thats the number the system is designed to power, if you overload them then your sytem will likely suffer problems. why dont you just connect each power connector to each of the drives ? Link to comment Share on other sites More sharing options...
jimmyz Posted March 5, 2013 Author Share Posted March 5, 2013 why dont you just connect each power connector to each of the drives ? Because that's not possible with the Norco 4020 case. :) The case has 20 hot-swap drive trays on the front. Each row of 4 drives has a SATA backplane that has two molex connectors to power the 4 drives in that row, but only 1 is required to be used, the second is intended for a hot-swap power supply. I currently am using Y adapters to connect to both molex connectors on each backplane (not necessary, but makes me feel better). http://i.imgur.com/xyQKxKB.jpg Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted March 5, 2013 Corsair Employees Share Posted March 5, 2013 Each Dongle can only provide about 18 Amps total so you would need to watch the type of drives you use at 30-40 watts per drive more than three spinning HDD's can draw more power than a single dongle can provide. And no more than about 216 Watts per dongle. So if you have 5 drives X 40 watts per drive that is 200 Watts so you would need drives that use no more than 40 watts per drive and one dongle per back plane. Link to comment Share on other sites More sharing options...
jimmyz Posted March 6, 2013 Author Share Posted March 6, 2013 Each Dongle can only provide about 18 Amps total so you would need to watch the type of drives you use at 30-40 watts per drive more than three spinning HDD's can draw more power than a single dongle can provide. And no more than about 216 Watts per dongle. So if you have 5 drives X 40 watts per drive that is 200 Watts so you would need drives that use no more than 40 watts per drive and one dongle per back plane. Thanks, that makes sense. Is that documented somewhere? Link to comment Share on other sites More sharing options...
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