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Questions tagged [electrical-power]

Power is required for all our servers, desktops, and other electronic devices to operate.

Power is required for all our servers, desktops, and other electronic devices to operate.

436 questions
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Step up voltage converter in datacenter?

I am setting up a rack in the data center that only has 110V. It is redundant, so I thought I could take one from each leg and get 110V, but when I used a voltmeter last night they somehow are on the same frequency so I don't get 220V out of it. I…
Alan
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How to secure this power cable on a network switch?

The device is an HP EI A5120 network switch. Is there a way to secure this power cable? Some other devices you can use a zip tie on these tabs. I searched but did not find a retention bracket from HP.
Bert
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Can a Vertical PDU be mounted in an enclosed rack?

I purchased an enclosed 12U rack as well as Vertical (0U) PDU, but can't figure out how to mount it in the rack vertically. I assume I need to mount it on the side posts of the enclosure, since, if I mount it on the front posts, it blocks all the…
SRobertJames
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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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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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How can I make a server or PC use the most electrical power it is ever likely to?

I have several servers connected to a UPS. I would like to try and get those servers to draw the most power they are likely to as a load test of the UPS. What is the best way to cause a server or PC to draw its maximum power? One machine is…
TafT
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How do I move a server to a new power source without powering it off?

I have a server that has a single power supply that it is plugged into the wall. I want to transfer the server over to a UPS power supply for redundancy but do now want to power off the server for the move. The UPS is plugged into the same power…
Eric Johnson
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Power consumption idle vs. maxing out every core

Are there any rules of thumb to describe about how much more energy a server will use when its cores are completely occupied, as opposed to being idle?
Ken - Enough about Monica
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Handling the potential risk of writing random bits to storage during power loss with RAID

Is it possible for a power failure to cause some part of a machine to write one or more random bits to a storage device? Someone proposed the following idea to address such a risk: create multiple partitions on a single disk which together form a…
andrew-e
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What will be the ill effects of turning off and on server daily

I have IBM server x 3850 M2 with remote system adapter. It has 128GB RAM and 4 SAS drives Its basically for my home labs , developmenet and testing I think that if i make it on 24 x 7 then i will be wasting power as i only use it when i come home or…
user3132561
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linux "hdparm -B" what is a good power management value?

I run a home server with Linux (ubuntu). Data (not the os, not swap, not /home) is stored on a large software RAID5 array. The server is on 24/7, but to reduce noise I would like the raid drives to spin down automatically after about 10 minutes when…
Jost
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How can I power down my server when the mains power plug is pulled out?

I have a server (Dell R310) running which has a main power cable (long) connected to power(in the wall). Anyone who is bored will pull out that cable (Train station/Airport/ Public zone) and server goes down. Again and again that's happening…
YumYumYum
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What is the OSPM Power management feature in current HPC clusters?

What does the operating system do in ordder to manage power in current HPC clusters ? What are the functionalities embedded in current HPC clusters in order to save power
kashyapa
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Reducing power usage on windows server

I have a Proliant Microserver Gen8 running windows server 2019 with a Xeon E3 1260L, one SSD for OS, and two 3TB 5400 RPM disks for storage (software raid). The server acts as a NAS and has a few small web apis on it. For the absolute majority of…
JensB
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