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Dual PSU for storage setup

nevets_1917
By nevets_1917
in Power Supplies
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I am working on cannibalizing an HP pc to use as a storage NAS/ Server.  Problem is the PSU is rather small and I don't know whether I would be able to find a replacement (due to proprietary HP CPU 6pin socket) so was considering a possibility.

 

Would I be able to use a second PSU purely to power HDDs the HP PSU would drive CPU MOBO and boot HDD the secondary PSU would drive 2 other HDDs and up to 4 more possibly added with a RAID Card.

 

Would this cause problems.

 

(Power Consumption is not an issue!)

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Posted

Its not practical but should be possible.  You're gonna need one of these tho:

 

netzteil-adapter-kabel-dual-psu-leitung.

 

HDD's dont need that much power tho so why not just plug them into the existing psu?

Core i7 4820K  |  NH-D14 | Rampage IV Extreme | Asus R9 280X DC2T | 8GB G.Skill TridentX | 120GB Samsung 840 | NZXT H440  |  Be quiet! Dark Power Pro 10 650W

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Cheers for the response.  Is the connector mainly to carry signal voltages to the secondary PSU or what is its purpose???

 

The numbers I have been working off are (95W (Pentium D CPU) + 28W (MOBO) + 25W (perHDD at spinup peak power) x 3(minimum number)) + ??? for RAM  + ??? for a few fans = at least 198W Max (PSU has capacity of 250W) for a load capacity of 79% at spinup which is relatively high.  Once operating this figure is likely to be lower but if I add a 4 port RAID Card that headroom is going to disappear.

 

I guess sort of a follow on question.  I am aware of staggered spin up, is it a common feature across all BIOS/ MOBO or is it board specific? I have a SFF HP business desktop (LGA775) so I doubt it is a feature rich board

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Cheers for the response. Is the connector mainly to carry signal voltages to the secondary PSU or what is its purpose???

The numbers I have been working off are (95W (Pentium D CPU) + 28W (MOBO) + 25W (perHDD at spinup peak power) x 3(minimum number)) + ??? for RAM + ??? for a few fans = at least 198W Max (PSU has capacity of 250W) for a load capacity of 79% at spinup which is relatively high. Once operating this figure is likely to be lower but if I add a 4 port RAID Card that headroom is going to disappear.

I guess sort of a follow on question. I am aware of staggered spin up, is it a common feature across all BIOS/ MOBO or is it board specific? I have a SFF HP business desktop (LGA775) so I doubt it is a feature rich board

It is to turn on both PSU's at the same time

n0ah1897, on 05 Mar 2014 - 2:08 PM, said:  "Computers are like girls. It's whats in the inside that matters.  I don't know about you, but I like my girls like I like my cases. Just as beautiful on the inside as the outside."

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