Server won't power on with extra drive

[dontmixpsuucables]

Hi guys, relative Unraid newbie here.

 

I've built an Unraid box in a Fractal Design Node 804. I've installed a 16TB parity disk and 32TB of data capacity spread across three more disks. Parity sync completed ok. There is no data on the server yet.

 

The problem is when I try to add a fifth disk - from which I intend to transfer my first data. The machine will flicker on for a split second, but will immediately switch off. It's as if the PSU can't handle the load, but it should be nowhere near capacity. I've tried switching the SATA power cables, plugging them into a port, and even tried with a different drive. No matter the combination, it will not power on with more than four drives connected. The motherboard only has four SATA ports but none of them are in use. All drives are connected through a SATA card.

 

Any advice would be greatly appreciated. Here are my system components:

 

Mobo: ASUSTeK COMPUTER INC. PRIME B660M-A WIFI D4

CPU: Intel® Core™ i3-12100 (as iGPU w/stock cooler)

RAM: 2 x 8TB Corsair Vengeance LPX DDR4 3200MHz C16

SATA card: LSI 9211-8i

PSU: Fractal Ion+2 Platinum 660W

6 x case fans

 

 

[JorgeB]

20 minutes ago, bendineen said:

No matter the combination, it will not power on with more than four drives connected.

If this is correct, the only thing that makes sense is the PSU, try with a different one.

[_cjd_]

I agree, sounds like a power supply issue. I have gotten so picky about what brands I'll buy any more - I've just seen too many issues over the years.

 

I have an old (near 20yr) Corsair power supply which did the same thing, though in my case it only supported one spinner - could get 3 SSDs just fine. It also fried two drives in the process of testing.

[dontmixpsuucables]

Update: I was using a power cable from a different PSU, which I had no idea was a no-no. Managed to fry the PCB of one of my drives in the process, which is hopefully repairable. Using the correct cable resolved the problem. I can't believe these things haven't been standardised to prevent this from happening - especially when none of my PSU cables from either manufacturer has any branding on them.