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16
votes
4answers
1k views

Can Running a Server's Redundant PSU on Different Circuits Damage It?

So I've been tasked to document and review the status of the UPSes for my current employer and identify any changes that need to be made. Generally easy stuff, however I came across a few units that ...
0
votes
0answers
9 views

PSU voltage sag tolerance

I am interested in learning how tolerable my hardware to power loss due to switching between circuits (via transfer switch) or due to lag when line-interactive UPS kicks in. I have several servers ...
2
votes
1answer
58 views

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 ...
-2
votes
1answer
60 views

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?
-2
votes
1answer
53 views

How do I get the power consumption of a Dell Poweredge server on the CLI?

How can I measure the power usage of a Dell Poweredge server from the command line interface?
1
vote
1answer
96 views

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?
2
votes
0answers
43 views

ipmitool sensor: does not detect backup power supply

Why doesn't ipmitool detect my second power supply? I have 2 powersupplies plugged into my machine, but calling ipmitool sensor only shows PS1: :~$ sudo ipmitool sensor |grep PS PS1 Status | ...
0
votes
0answers
22 views

+12v lower critical threshold asserted on Intel Blade Server

We have an Intel blade server that has 4 active blades. One of the blades completely turned off last week. Yesterday, the blade restarted itself.... Looking deeper into it, we are seeing an error, ...
0
votes
0answers
52 views

Intel server SC5300LX+SE7520BD2 won't boot after removing a second PSU

I have an intel server SC5300LX+SE7520BD2 with 1+1 redundant PSU (Delta electronics C46098-005). As one of the PSU had an amber led lightning, I decide to check the part-number and I did this by, ...
0
votes
2answers
687 views

1611- Fan x missing, Fan Solution Not Sufficient in HP ProLiant DL380 G6

I have HP ProLiant DL380 G6 server. It is showing following errors. 1611- Fan 1 missing, 1611- Fan 2 missing, 1611- Fan 3 missing, 1611- Fan 4 missing, Fan Solution Not Sufficient, 1615- Power ...
-3
votes
3answers
193 views

HP Proliant BL460C power supply converter [closed]

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, ...
6
votes
2answers
342 views

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 ...
1
vote
0answers
529 views

HP ProCurve 4208vl - Show PSU information?

I'm working with a few older HP ProCurve 4200-series chassis switches (4204vl and 4208vl). Some of these units have single power supplies, while others have dual power supplies. I'm trying to ...
-8
votes
2answers
309 views

Server destroying and burning my Hard Drives [closed]

Before I start, let me inform you that I have been working as an IT Manager for large international companies for my whole life, and I have received masters degree from IT technology. I therefore ...
10
votes
5answers
3k views

How can I determine the power demand of an HP server's power supply under load?

I bought an HP DL360 G7 1 U rackmount server. I am looking to put it in a colocation facility. The issue is almost every facility I have seen either limits the amount of power I can access or charge ...
28
votes
3answers
7k views

How do servers with redundant power supplies balance consumption?

I have several servers from the HP DL360 line (generations 5-8). Each of these servers has two power supplies installed. The 2 power supplies in each server are fed from different circuits. My ...
1
vote
3answers
3k views

dell R710 / R620 power-supply broken after firmware update

We datet up the firmware on a dell R710 and some weeks later on a DELL R620. In both cases the firmware update on one of the two power supplies failed and it didn't work any more (amber flashing). ...
1
vote
5answers
910 views

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 ...
1
vote
1answer
354 views

5-pin 4-cable connector on SuperMicro server PSU?

I have a 4U SuperMicro SC847 Chassi that comes with redundant 1400W power supplies. All of the internal power cables (ATX, ATX12V, HDD and such) are connected to two circuitboards where the back of ...
8
votes
3answers
1k views

Power Cables Required to Switch from 120v to 240v for Dell Poweredge Servers

We have a cabinet of servers and other hardware (switches, firewalls, etc) that all are currently running on 120v. I've confirmed that the power supply for all of our devices support both 120v and ...
-1
votes
1answer
129 views

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 ...
4
votes
3answers
1k views

How many power circuits do I have in a rack?

I'm planning to get some colocation space from someone in my area, and like most companies that offer colocation, ask about power supplies (of course) in the quote form. I'll need a power of 1000W ...
46
votes
7answers
8k views

Why do we still use power supplies on datacenter servers?

Computers mainly need three voltages to work : +12V, +5V and +3,3V, all of them are DC. Why can't we just have a few (for redundancy) big power supply providing these three voltages to the entire ...
0
votes
1answer
2k views

Resert IBM system x3650 fault led

I got OVERSPEC, PS1 and PS2 fault led on my x3650. I tried to replace one PS but nothing changes. The power supplyp seems to work properly and it is very strange to broke both PS at the same time. I ...
0
votes
2answers
781 views

NVIDIA Tesla K20C in Dell PowerEdge R720xd — power cables

I am trying to put an NVIDIA Tesla K20C into a Dell PowerEdge R720xd. I'm having a bit of trouble understanding the power requirements of the card. First, here is a picture of two pages of the ...
9
votes
4answers
1k views

Maxing out both PDUs in a rack with redundant power

If I have a rack full of servers using redundant power supplies, and I'm keeping the amps at 80% (16A of 20A), isn't this still asking for trouble in the event of a power loss on one of the circuits? ...
3
votes
2answers
619 views

HP Proliant ML310 G4 power supply warning

One of the two power supplies in my HP Proliant ML310 G4 server has an amber/orange LED lit in one of the power supplies on the front panel. Also, the wave symbol is flashing in orange/amber. When ...
-2
votes
1answer
759 views

Difference between a power strip, a power distribution unit (PDU) and a remote power switch? [duplicate]

I would like to know what is the main differences between a power strip, a power distribution unit (PDU) and a remote power switch. Thank you.
5
votes
1answer
191 views

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 ...
-3
votes
2answers
111 views

Windows 8 NTFS errors only when on adapter [closed]

We have a very strange error with a brand new ASUS Notebook S550CA, + Windows 8 64 bits Single language + 500 GB Hitach HDD (type: HTS545050A7E380). if the laptop is running on battery power, the ...
5
votes
2answers
1k views

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 ...
0
votes
2answers
1k views

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 ...
1
vote
1answer
359 views

HP DL380G5 with APC SC1500 UPS — transfer time failure

I have 2 of these things: APC SmartUPS SC1500 (220v). My Proliant G5 DL380 PSUs seem to really hate them. This is what happens when UPS switches to battery (PSU2 is plugged into the SC1500): iLo IML ...
-2
votes
1answer
123 views

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 ...
-1
votes
1answer
945 views

Could the Input/Output or some other difference between adapters/chargers cause this? [closed]

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): ...
1
vote
2answers
112 views

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 ...
4
votes
2answers
157 views

Does the additional load on UPS in case of grid failure amount to 100%?

The scenario is as follows: Servers are equipped with two PSU's each. One of these is connected to the UPS, the other one directly to the power grid (bypassing the UPS). I would assume that since the ...
7
votes
1answer
254 views

Is it safe to remove power from a linux computer in run level 0? [closed]

I am working on power supply to a Raspberry Pi where changing the state of one of the GPIO lines shuts off power immediately. Is it safe to do this in run level zero, or is there more shutting down to ...
1
vote
1answer
131 views

Is a 650W PSU enough for 4x 7k HDDs 2x CPUs and a monster AMD Radeon HD 5990 [closed]

I bought a supermicro chassis a few years ago with a 650W PSU for a personal lab I built. Everything has been just fine so far, but now that I'm looking into some GPU based work, I'm finding that I ...
0
votes
1answer
313 views

can power supply affect I/O [closed]

I have a dev server machine running Ubuntu 12.04. For a long while it's been throwing intermittent errors where it would suddenly tell me "File system is read only" or drop into a GRUB error console ...
1
vote
1answer
303 views

What is the % Energy Savings of a Dell energy efficient Power Supplies worth the extra cost? (I.e., what's the payback period)? [closed]

Dell offers an extra efficient power supply (PSU) with some products, such as their Optiplex 9010,which I'm considering buying. They say it's 90% efficient but don't explain exactly what that means ...
-3
votes
1answer
84 views

Power Supply And Power Cable at Equinix Palo Alto? [closed]

I will be doing a server installation at the Palo Alto Equinix Data Center soon and I'm coming in from overseas so I wondering if any of you can help me out regarding power supply can power cable ...
10
votes
2answers
6k views

How can I calculate if a UPS is sufficient for my requirements?

I am not that of an electricity knowledgable person, so I'll try to put as much info as possible. I have a Rack Mount UPS of 1800 Watts Model: PRP 3050 RM (in total I have 2 of these - talking about ...
2
votes
1answer
171 views

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 ...
0
votes
1answer
190 views

How much power supply do I need for my server, and could a shortage be causing my odd crashing?

I have 5 servers, all with similar hardware (i7, four 2tb 7200rpm drives, two 4tb 5400rpm drives, 430 watt power supply), and lately the machines have been freezing up. This has gotten worse in the ...
1
vote
2answers
118 views

What are the advantages of getting an expensive server? [closed]

Server CPUs cost multiple times more than Desktop CPUs; so do Motherboards and PSUs. What are the advantages of getting a server system rather than a desktop system? Stability can be one, but what ...
4
votes
3answers
16k views

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 ...
0
votes
3answers
123 views

Router Power Supply [closed]

I have a wireless router that needs a 12VDC 1A power supply. I no longer have the power supply for it. Is there any harm in using a 12VDC 1.2A power supply instead?
-1
votes
1answer
54 views

PC Shutting Down Without Warning [closed]

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 ...
2
votes
2answers
95 views

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 ...