Powering 10 drives: PSU/Cable advice

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rpdubz

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Apr 25, 2018
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Hi folks,

I'm building a 10 drive config (8 HDDs, 2 SSDs for boot) and looking for PSU & cabling advice.

Case: Fractal Design Node 804
MB: Supermicro X11SSL-CF
CPU: Intel Xeon E3-1220 V6 Kaby Lake 3.0 GHz LGA 1151 72W
RAM: 2x SAMSUNG 16GB 288-Pin DDR4 SDRAM ECC 2133 (PC4 17000)
SSD: 2x Intel SSD Enterprise Edition 710 Series 100GB 2.5 SATA II
Drives: 8x HGST 8TB 12Gb/s SAS
PSU: Considering EVGA SuperNOVA 750 G1+

My initial concern: There aren't nearly enough SATA ports on the PSU and there's a warning in the Freenas hardware guidance not to split them. Also, PSU specs say 120w max output on the +3.3V/+5V rails, so at ~35W/drive I'm way over that. Is there something I'm missing? How do I power all of these drives properly?

Thank you!
 

rpdubz

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Apr 25, 2018
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I think I just answered my own question - pick a different PSU. Duh. I just discovered that other PSUs have many more SATA connectors and I can search by # of connectors on Newegg.

I don't see an easy way to delete this thread though.... guess I'll leave it up in case anyone wants to critique my build. :)
 

Stux

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Jun 2, 2016
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120w max output on the +3.3V/+5V rails, so at ~35W/drive

The vast amount of the drive wattage comes from the 12V rail. With some from the 5V.
 

MrToddsFriends

Documentation Browser
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Jan 12, 2015
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1,338
By no means a poor starting point:
Seasonic Focus Plus Gold 850W ATX 2.4 (SSR-850FX)

Don't bother with thread deletion for almost no reason.
 
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