HDD Spin up power use

[nevets_1917]

Forgive me if this is the wrong location.

 

I have a storage pc with a total of 7 drives (6 mechanical 1 ssd boot drive).  I have recently upgraded the psu and added 2 new drive (to bring it to its current total)  and am wondering whether it is causing PSU issues on spin up.

 

The PSU is a Thermaltake SST-ST50EF (500W 80+)

CPU: AMD 64 X2 4600+ 

No dedicated GPU

1 cheap 4 port RAID card

1 cheap 4 port SATA expansion card

 

DRIVES:

2x 2TB WD Green 

2x 2TB Seagate Barracuda

1x 3TB WD Green

1x 3TB Seagate Barracuda

1x 120GB Kingston SSD Now V300

 

The pc has run fine on a 400W PSU with the 2TB Drives (+320GB mechanical) but with the new PSU and all drives it doesn't boot and no fans spin up at all.

 

I have done some rough calculations based on the manufacturers data sheet (1.73A peak for WD Green) and (2A peak? for Seagates) still only works out to 11.19A (not counting SSD 1A) which is well under the 25A of the 5V supply and 18A from each of the two 12V supplies.

 

One concern is the new PSU uses an 8 pin (non splittable???) CPU power connector not a 4pin that the motherboard uses.  This is the only possible issue I can think of as I have improved the PSU as I have added more drives.

 

Sorry if this is in the wrong place and thanks for any suggestions.

 

[REX.exe]

repost?

http://linustechtips.com/main/topic/396329-hdd-power-issues-in-storage-pc/

[nevets_1917]

repost?

http://linustechtips.com/main/topic/396329-hdd-power-issues-in-storage-pc/

 

Not a repost I just posted in two different categories as I thought it fit under both.  My apologies if this is against etiquette, I am a fairly new member.

[blackadder]

Not a repost I just posted in two different categories as I thought it fit under both. My apologies if this is against etiquette, I am a fairly new member.

it does work the old psu right? If it does then do the paperclip trick on the psu(google) if it doesn't start then contact support. Im not sure what the drives spin up but, i like how you're thinking about chances ate its dead or something simple like not plugged in all the way.