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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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At my wits end. What could cause my server to randomly hard reset? (Seems to be related to ZFS)

I have a server that I built years ago that has worked like a champ. But within the past few months it has started to become seriously unstable with no discernible pattern. I have been debugging it and swapping out parts to no avail. I have replaced…
Zhro
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Double UPS on high load during power down

To sketch the situation : a bunch of servers (~15 going from 4u to 1u, some redudant PSU some single) 2 UPS (1 APC I can read using apcupsd) 2 PDU So I came upon this situation, and I honestly have no idea what the best solution would be. We have…
SvennD
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How to measure server power consumption?

We have data center running more than 2000 servers. We are planning to shutdown the servers on a weekend for cost cutting purpose. How can we calculate which servers are consuming more power in the data center so that we can shutdown those many…
sanjay p
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Do I need some kind of power conditioner or UPS?

In one of my boxen, both my power supply and network card died while in overnight hibernation - why? And: What must I do to appease the electricity Gods so that I don't lose more hardware? In my home I've got... five computers in various states…
Josh
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Is it possible to convert 4-pin floppy to SATA power?

I just bought a server and realized that it had power for all my drive bays, but not for the internal SSD I bought for it. It does, however, have 2 free 4-pin floppy power connectors: Is it possible to convert these to a SATA power connector using…
Hubro
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spontaneous reboot, machine check events, AMD ryzen

I've been running a brand new system on arch linux for about 3 weeks, and last night it spontaneously rebooted. There's no shutdown/halt in journalctl at the time of the reboot, so I'm pretty sure this is hardware related, not a userspace program or…
Todd Freed
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How to verify power provided to processors is clean

Once in a blue moon, I am seeing a blue screen of death on a shiny new Dell R7610 with a single 1100 Watt Dell-provided power supply on a beefy UPS. BCode is 101 (A clock interrupt was not received...), which some say is caused by under-volting a…
GregC
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DL385 G2 powering off after some time

I have one DL385 G2 server that since Thursday is not able to power on properly. I can't figure out what's the problem, since there is no indication neither in iLO 2 log, IML, nor any red/amber LED on the front panel. Sometimes it can boot to the…
Peter Dian
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HP Proliant DL380 G7 won't power on, UID light works, ethernet lights blinking, power button solid orange

Momentary press and long press of power button does nothing. Can get in through iLO but pressing the button there does nothing. This started after our block had a power failure but all our servers are surge protected and no other server had this…
Tom
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What is the button on power supply of the Dell Optiplex 760 workstation for?

What is the button on power supply of the Dell Optiplex 760 workstation for? There is a small button near LED power indicatior - seems to do nothing when pressed.
tomash
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R610 redundant power supply

We are installing Dell Poweredge R610 servers with redundant powersupply's: High Output Power Supply Redundant, 717W So each server has two power supplies. I'm trying to figure out whether during normal operation, the power draw through each PSU…
wdp
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Will a 300W psu drain more power than a 100W if the system only uses ~80W?

I have a NFS server that is a old mini-itx motherboard with two 2.5" drives and a no optical drive. Atm. this is powered by a external 100W psu, but I estimate it only need/uses between 60-80W. This old 100W psu is about to die on me (won't always…
eple
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Plug single PSU into two different power sources

We have a rather uncommon situation: We have a server in a computer center. Its got not enough spare space to put in a redundant PSU. Nevertheless, we want to attach the single PSU to both existing power sources, because it happens fairly often (in…
roesslerj
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HP Proliant DL380 G7 power calculation

HP Proliant DL380 G7 in year of production has alternative PSU: 750W in "performance" configurations with 2 CPU 460W in "base" and "entry" with 1 CPU "Power advisor" calculator is not accesible in 2017 My question is: Can 460W PSU work with 2 middle…
Jacek Cz
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HP ProCurve 5412zl warm-boots on power failure while attached to UPS

My client's HP ProCurve 5412zl chassis switch reboots on occasion, despite being powered through four redundant power supplies and being under UPS protection. These reboots usually happen during a real power outage or during a brown-out or…
ewwhite
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