Pools offline after shutdown / power on

[artlessknave]

Please don't use these insipid calculators

i've used that very calculator....but i then basically doubled it and used that for my sizing...

 

[jgreco]

i've used that very calculator....but i then basically doubled it and used that for my sizing...

Well, that's a sarcastic endorsement if ever there was one, heheh.

 

[samarium]

I was using the web site as first pass, before going over the actuals myself, still I already thought that it was a flawed. A for my Lenovo M900 Tiny, that is not the target of the new PSU, but an 7302P and maybe 10HDDs and 10SSD, still evolving. My existing E3-1231 server has a Seasonic M12 500W PSU is probably a bit anemic for the 7302P, and going on 10 years old, so internals are becoming suspect due to age.

 

[artlessknave]

seasonic are usually on the high end of reliability, and can often be pushed a bit more than many of the others.
I would generally be more comfortable going for less overcompensation with a seasonic.

 

[icemule1]

To reiterate, please use proper techniques to size your PSU:

Proper Power Supply Sizing Guidance

I've seen about 1,000 threads like this one where people decide that they can power a dozen hard drives off a 360 watt supply. DO NOT DO THIS. I've seen another 1,000 threads where people decide to buy the cheapest power supply that they can find. DO NOT DO THIS. Your NAS lives or dies by...

www.truenas.com

Everyone in this thread seems to agree that the problem is related to my power supply, but according to the PSU sizing guide you linked, 450W should be sufficient for 6 drives. I chose the option that is closest to my setup:

2) For an E3-1230v3 (32-98W board+CPU, 12W memory):

• 5-6 Drives: 360W peak, 132W idle -> SeaSonic G-450

You're recommending a SeaSonic G-450 and I have a Corsair CX 450. Did I really screw up that badly by getting a different brand? I guess I'm still confused on what I really need for my setup. I'm only using it for file sharing.

 

[jgreco]

450W should be sufficient for 6 drives. I chose the option that is closest to my setup:

2) For an E3-1230v3 (32-98W board+CPU, 12W memory):

• 5-6 Drives: 360W peak, 132W idle -> SeaSonic G-450

You're recommending a SeaSonic G-450 and I have a Corsair CX 450.

I think that's a poor pick, not at all close to your setup. Your host is described as

HP Z420 Workstation Motherboard
8x8GB Micron DDR3 ECC 1800MHz memory
Intel Xeon E5 2660v2 10-core CPU
240GB Crucial SSD as boot drive
6x12TB WD Ultrastar DC HC520 hard drives set up as Z2 array
Radeon HD7770 1GB graphics card for console access

The Z420 is known to be a piggy system, as documented in various places. A workstation grade mainboard is going to burn more watts than the low end server grade board needed for an E3-1230v3, and the E5-2660v2 is a 95W TDP part compared to the much more efficient E3-1230v3 which maxxes out at 80W and doesn't usually use it all. You also have double the number of DIMM's of the 1230 system, and they're probably not the lower power UDIMM's included in the 1230 estimate (~= 12W) but more like 4 or 5 watts per DIMM (yours ~= 32-40W). Using the lower density RDIMM's burns watts.

Your system is much closer to the option 3) I precalculated, except you've got more DIMM's than I anticipated AND you have a Radeon GPU in there AND you have a possibly piggier workstation board in there (I haven't load tested a Z420 so I have no specific numbers). The Radeon idles at 80W and tops out at 106W and I think you should add at least 15W for RDIMM. Circling back around to the precalculated numbers,

3) For an E5-1620v3 (speculative: 70-210W board+CPU, 24W memory):

• 1-2 Drives: 319W peak, 125W idle -> SeaSonic G-450
• 3-4 Drives: 389W peak, 141W idle -> SeaSonic G-550
• 5-6 Drives: 484W peak, 182W idle -> SeaSonic G-650 or X-650
• 7-8 Drives: 554W peak, 198W idle -> SeaSonic G-750 or X-750
• 9-10 Drives: 639W peak, 229W idle -> SeaSonic X-850
• 11-12 Drives: 709W peak, 245W idle -> SeaSonic X-850 or X-1050

But I think for your 6 drive scenario with the Radeon and RDIMM adjustment, I would guess more like 610W peak, 277W idle, which puts you around needing an 800W PSU to reliably handle the load. Now of course this is still speculative, but it is based on real world observations of real parts, just not YOUR specific parts.

 

[artlessknave]

that was a great a post. it basically said the same i did earlier but with actual evidence instead of my underenthusiastic "bleh i just throw more power at it"