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0
votes
5answers
166 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 ...
8
votes
3answers
524 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
35 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 ...
3
votes
3answers
631 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 ...
41
votes
7answers
7k 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 ...
-1
votes
1answer
395 views

hp proliant dl380 g5 won't power up [closed]

Sorry for a probably silly question. I just bought an used hp proliant dl380 g5. It is supposed to be in a ready to use state. The problem is that it does not power up. The power green lights at the ...
0
votes
0answers
722 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
1answer
368 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
435 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? ...
2
votes
2answers
347 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
142 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
152 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
82 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 ...
4
votes
2answers
594 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 ...
1
vote
1answer
173 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
83 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
582 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
101 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 ...
1
vote
1answer
117 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
176 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
215 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
74 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 ...
-4
votes
2answers
121 views

What's the deal with using unreliable green energy in datacenters? [closed]

The news say that Google now uses 48 MW of electricity produced by wind turbines to power one of its datacenters. I've always heard that "green" energy is great, but it is unreliable - wind doesn't ...
9
votes
2answers
3k 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
138 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 ...
2
votes
2answers
231 views

Conference Room Under The Table Power Pack Mounts

I've currently got 12 notebooks, HP ProBook 4535s, that are being used by a local government group for board meetings. These are used only for the board members during the board meetings and only to ...
0
votes
1answer
166 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 ...
4
votes
3answers
7k 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
115 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
46 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
87 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 ...
3
votes
3answers
159 views

Chasis reset button vs remote power recycle

Ocassionally one of my remote windows servers locks up and must be restarted by pressing the restart button on the front of the case. Since I work remotely I call a coworker to press the button. I ...
0
votes
3answers
192 views

Powering an IBM x335

I've just purchased a second hand IBM X335 server in order to introduce myself to server hardware and management. Having never used such equipment before, I have much to learn, so please forgive me if ...
16
votes
3answers
4k views

How does a 3-Phase UPS distribute power?

We've got 2 UPSes in our server room. One's 3 phase, and has a 3phase supply, yet the APC network stats thing only says Incoming Voltage: 230.1 Volts The other is a single phase one with no ...
3
votes
3answers
2k views

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 ...
3
votes
5answers
832 views

A plan to mitigate PDU failures?

A client just experienced a complete failure of an APC AP7911A switched/metered rack power distribution unit (PDU). This obviously took all of the connected equipment down with it. The equipment is ...
2
votes
2answers
313 views

How much power draws a redundant PSU?

One supermicro enclosure comes with "3 SP382-TS 380W Power Modules for a total of 760W". 2x380W = 760W, okay, but there are 3! So where is the missing third 380W equalling to 1140W?? Is it ...
0
votes
1answer
78 views

How does a server power supply withstand unto toggling the power?

My server will run only weekly for 2 hours for backup purposes. After I finished the backuping I pull out the power plug from the power outlet. How does a server power supply withstand unto toggling ...
1
vote
5answers
785 views

Server's power supply always on even if it is turned off

I just bought a used HP ProLiant ML350 G4p server and it's power supply gets working immediately after I plug it into power outlet. (the fan is spinning, and the unit consumes 20W of energy) The ...
0
votes
1answer
944 views

Dell Poweredge 2800 Power Consumption

I am considering buying a Dell Poweredge 2800 Tower 2nd hand, while I have some experience with HP's competing server brand, the ProLiant Series, I am struggling to find out the server's realistic ...
2
votes
2answers
506 views

A/B Power Configuration for Server Cabinet

I'm upgrading our cabinet at our colocation for A/B power and wanted input on which of our options are good or bad. First, a bit of an overview of our setup: We currently have a single circuit feed ...
3
votes
2answers
303 views

Power reading 2 amps with 13 servers?

We have a rack in a data center and we became suspicious of running out of power. But our power bar says 2 amps! It has a live indicator, so it's not just one reading. Do you think there's something ...
1
vote
1answer
148 views

IBM server shutdown and restart

How can I set up a server so that when there is a power cut it is safely shut down, and when power returns it switches back on automatically? I am specifically using an IBM AIX Server 6.
0
votes
2answers
347 views

Redundant power supply

I have been hit by my inexperience with power supplies... I bought a Ablecom (SuperMicro) PWS-801-1R redundant power supply. But this is in fact a module, that is not redundant in itself, and must be ...
0
votes
1answer
329 views

Are the SATA power connectors on motherboards compatible with both 2.5 & 3.5 drives?

Are the SATA power connectors on motherboards compatible with both 2.5 & 3.5 drives? I want to switch my desktops internal 3.5 in drives to 2.5 in drives. I know that the signal cables are the ...
0
votes
1answer
62 views

Supply power to more than 4 SCSI devices? [closed]

I was wondering, essentially I wanted to pool 4-10 SCSI drives in to a single computer, but of course only have a limited amount of 12v power cables to go in to them. What would be the proper way to ...
3
votes
1answer
1k views

Software to measure power draw of HP Server

I'm after some software to measure the power draw of a HP Server, namely a DL360 series. I know Nagios is used for logging and monitering but I'm not sure if it logs power usage as well. I've also ...
0
votes
3answers
443 views

Send notification after powerloss resume?

Question: I've set the BIOS of my server to automagically resume the last state (running/switched off) after a powerloss. Now, how can I send myself an E-Mail when the system has resumed after a ...
1
vote
1answer
282 views

In equipment with dual PSUs, how is power draw balanced between them?

In equipment which has dual power supplies - e.g. a server - how is power draw balanced between them? Will they be "active/active", with load evenly spread between both PSUs? Or will they be ...
0
votes
2answers
313 views

Netgear Modem Power Supplies, do AMPS matter?

i recently purchased a Netgear DGND3300 modem from USA for Australia. Unfortunately it didn't come with a power adapter so i bought one locally, however the modem is recommended to have 12Volts and ...