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Questions tagged [power-supply-unit]

Questions related to power supply units, aka PSUs

PSU is an acronym for Power Supply Unit.

172 questions
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On boot, server pulls full load of both PSUs -- any way to limit this or mitigate load spike?

I have a giant 24u server (Supermicro 4U X9DRI-F w/ 2x Xeon E5-2680) with 2 1200w PSUs. However, I only have 4 drives in right now, and my actual power draw (under the most stressful loads) is likely not more than 500w. I have these PSUs plugged in…
Mike Manfrin
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Random shutdown, then doesn't power-on until power-plug is pulled out from wall and plugged back in

We have a workstation machine which, for the past three days, shuts down (apparently) randomly. After it shuts down, if you press the power button, the machine won't start. However, if you pull out the power plug from the wall socket end, again put…
Whirl Mind
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HP DL360 G5. Doesn't start if power cable plugged in PSU1

I bought an used server. When I plugged in a first PSU (the one near sidewall) a power cable, some fans turned on, a led on the front panel light orange, on mobo green leds works. When I press a power button nothing happens. When I plugged off the…
Areso
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Power server when power is on (No Bios access)

I have 3 servers and one is old hardware. I have frequent power outage due a Kw limit. I know there is an option in the BIOS to power on a machine when there is power. 2 servers does have this AC Power Recovery option, but the last one I can access…
BeGreen
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600W PSU max Watt load

I have purchased an EVGA 600W Silver PSU. It is connected to the following: Motherboard + CPU + SSD + 3 x Video Card (RX 470 with riser cables). I have a watt meter which I have connected to the PSU and the overall wattage it shows is 540W-550W. I…
mbaros
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Halt, not power down, a windows server

A client recently changed their UPS and now claims that their server is not coming back up after am extended power outage. They have tested their system and it will keep the last state, so if the power is removed while on, it will automatically…
Dude named Ben
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Power requirements for SAS enclosures

I have a Supermicro 4u enclosure with dual 1400 watt power supply running on 220v. There are 24 drive bays. The power supply is rated at 4amps for the 5v output. If I have 24 drives that requires .75 amps on the 5v, the math isn't adding up in…
user394064
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Does chassis mid-plane provide load balancing for power supply

I am new to blade chassis management, and i want to know what is the purpose of mid plane apart from connectivity. Does it provide load balancing among the power supplies. If so does that mean it automatically ensures power supply redundancy or for…
Chu
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Could the Input/Output or some other difference between adapters/chargers cause this?

I have a laptop and my adapter/charger could not be used anymore as the cable was cut. So I bought a new adapter but it was slightly different than the original. My original had (Toshiba's original): Input: 100-240V ~ 1.5A 50-60Hz Output:…
user76678
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PC Shutting Down Without Warning

I have a Windows 7 PC that is shutting down without warning, seemingly at random. Here are the symptoms and notes: PC seemingly turns off completely. After taking off the cover it turns out the fans continue to run after this happens. After this…
Phil Sandler
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What's the name of the component that allows a hot-swap power supply to slot-in and provides all the cables in a 1..4U server?

In contrast to consumer grade PSUs, server PSUs sometimes come without cables. From what I gather, these are usually of the redundant variety or so called "1+1" configuration. I wander if there is a generic name for the component inside the servers…
Ярослав Рахматуллин
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Is redundant power supply really redundant?

Apologize for my inexperience or if I am missing something important here... Everyone kept talking about how good it is to have redundant power supply in servers, yet no one talks about a redundant power supply's distributor failing. Correct me if I…
Jerng Yue
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How do I get the power consumption of a Dell PowerVault on the CLI?

How do I measure the power usage of a Dell PowerVault storage device from the command line of the attached server?
Onnonymous
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HP Proliant BL460C power supply converter

I have 3 HP Proliant BL460C servers, but I don't have chassis for them. Is there any kind of power adapter that I can use for, so I can just use normal power cable to plugin? It's not for production, only for testing. I did some search but could not…
Root Loop
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How to calculate total / max electricity consumpton for a server / or hardware equipment.?

Consider I have in the cisco 2911-sec/k9 data sheet following power values Maximum Power with AC Power Supply (Watts) 210 With this given value how can one calculate total electricity produced or consumed? What the involved? I want to use this…
iloveyouga
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