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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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Understanding ipmitool output for "Power Supply" (PSU)

This Ubuntu server has two PSUs, I just ran ipmitool and it reported as follows: # ipmitool sdr type "Power Supply" PMBPower1 | DFh | ok | 10.0 | 624 Watts PMBPower2 | E4h | lnr | 10.0 | 0 Watts PSU1 AC Lost | E1h | ok | 10.0 |…
guesty
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Preserving a mothballed system: soft shutdown, PSU off or unplugged entirely?

I've got a system that looks like it's going to be kept around "just in case" (virtualization has already been explored). Long ago I had another such system but when when it needed to be turned on after several years the PSU had died which was…
David
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Disable failed power supply warning LED on front of Power Edge 1850

I have a Dell PE 1850 that has recently been re-purposed as a non-essential TFTP server. It is currently running Centos 5.4 with no GUI. It has redundant PSUs, however I only need one connected (available outlets are scarce in the full rack).…
MDMarra
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Why do servers have 2 PSU?

I have a Dell PowerEdge 2900 server and it has 2 PSUs, so: Can I run the server by having only one PSU plugged in? I am not going to have this server on all day and night. I'm just using it to learn more about servers and networking. Trying to get…
Eric
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Safely conduct tests that require unplugging server

So, basically I am testing and diagnosing my UPS's as well as the power sources (PSU) of my server. For that purpose I am powering down the server "the hard way", by unplugging it from the wall as to simulate a power loss. This I have been doing…
DarkCygnus
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HP Blade System 7000 - Fans About to Take Off

We've noticed lately that our HP Blade System 7000 sounds like it's going to take off. The top 2 PSU on the right are incredibly loud and blowing out significantly more air than the 2 to the left or the 4 underneath. I have spoken with my team and…
Killian
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How do I get the power consumption of a Supermicro server on the CLI?

How do I get the power usage of a Supermicro server from the command line?
Onnonymous
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Good power supply for a Asus Z8NR-D12 motherboard? (Or: I can has dual ESP12V?)

My company is building a server and we've already purchased an Asus Z8NR-D12 motherboard which we really like, but when we went to assemble our server, we found that the chassis we had bought came with a PSU that only provides one EPS12V connector…
Mike Akers
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FreeBSD determine if reboot was due to power loss

We are running FreeNAS (which is built on FreeBSD) to run our data storage systems. It is running on an APC Smart-UPS 750VA X. On a couple of occasions, I have been alerted to the fact that the server is down by our monitoring systems. After a few…
Chris
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Power supply reliability

Is a larger-capacity power supply likely to live longer than a lower-capacity supply, even if they both have plenty of capacity for the system they're on? For example, say I have a system where the typical load is 200 W and the max load is 350 W…
jacobsee
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Sun X4100 power supply failure LED on, but PSU working

I have a Sun X4100 with dual power supplies. The "rear PSU" LED comes on after the system is powered on and has gone through the self-test. Both power supplies are working just fine -- I can take out either power cable and the system will still have…
kaared
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Redundant Power System integration

We currently have a stack of catalyst 3750's at the core of our network. We just purchased two new 3750's to split off our VMs and SAN onto their own switches and away from the stack. These two new switches will not be stacked. All switches are…
user162617
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Plugstrips with protected switches

We recently had a full power outage and had to shut down basically all devices in the server room. Being a smaller org, we still have some very small business practices im working to change over time, like having a bunch of external disks in…
Devnull
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Two servers, two PSU's, Two UPS

I have two server, with redundant PSU's connected to two UPSs. The UPSs are APC Smart-UPS 1500VA and I want to shut down the servers when the power gets low. However, because I have a redundant PSU then it becomes a bit difficult to manage. How am I…
VBwhatnow
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What are the essential considerations for setting up systems in a location with unreliable power?

I deal with a lot of remote offices located in parts of the world where the local grid power supply is unreliable. Power can go off anytime with no warning, with outages ranging from minutes to days Power fluctuation is wild, with spikes and brown…
dunxd
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