The power tag has no wiki summary.
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0answers
27 views
IBM System x-3550 m2 won't start
I have a system x-3550 that won't start. It is in the process of being rebuilt as an Exchange server, so it wasn't in production yet, and while I was on leave it got turned off (properly I might add, ...
11
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5answers
318 views
Why is it important to ensure equipment is well-grounded?
I am installing a new ethernet switch, and the instructions say to connect the ground screw to the rack or some other kind of electrical ground. What are the risks of not ensuring that equipment is ...
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2answers
114 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 ...
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1answer
173 views
Windows 2008 Server R2 turns itself off
I have a Windows 2008 R2 Server that switchs off on his own. and it does not look like a hardware problem since I can see in the log how all services are stopped and after:
Log Name: System
...
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1answer
57 views
How much power draws a system like this idling in BIOS? [closed]
Let's assume a generic system like this:
Two modern multi-core CPUs, like a Xeon Dual Core
2x 7120M, 3.00 GHz, 95 W power dissipation each, according to Wikipedia
2x 835Watt PSU (redundant)
8GB RAM
...
9
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1answer
118 views
Using 48v for servers
I'm currently in the middle of a process to specify and design a new server environment for graphics and video rendering.
We know we want to use blades, and we're pretty sure of our vendor decisions. ...
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5answers
138 views
A plan to mitigate PDU failures?
A client just experienced a complete failure of an APC AP7911A switched/metered rack power distribution unit. This obviously took all of the connected equipment down with it. The equipment is fine, as ...
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3answers
57 views
USB Legacy support burning PSU, is it possible? [closed]
So one day, the PSU in the machine I was working with decided to blow up. Yes, I heard a pop, and a strong burnt smell.
So what happened? What caused it? How can I prevent it?
The situation:
The ...
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1answer
39 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 ...
2
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1answer
82 views
What is the proper power cord for the usual rackmount server?
I'm trying to clean up a rackmount power environment, and wanted to check on the power cords. Currently, it seems that what I would consider to be appropriate are labeled mostly as 14AWG:
14AWGX3C
...
0
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1answer
70 views
How to put laptop to sleep with powershell/vbs/wmi/…?
I'd like to be able to put my laptop to sleep from the command line. According to Microsoft, the Win32_Battery WMI class has a SetPowerState method that looks like it should be able to do this, ...
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1answer
63 views
Monitoring power usage (AMPs/kWh)
Sorry if this is too near 'shopping' but after much Googling I've not really found any decent solutions.
What I'd like to do is monitor the power usage, particularly AMPs and kWh/day used by a plug ...
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4answers
192 views
How to wake a server after UPS Shuts it down when Mains power is restored?
I have several Linux servers connected to APC UPSs. They are connected to the UPS via USB and configured to shutdown if the UPS sends a signal that mains power has been lost and has not returned after ...
2
votes
1answer
59 views
PDU With Configurable AMP Limit
I have a 20 AMP/120V circuit. The only device plugged into this circuit is a 1000 Watt Dell UPS. Right now several devices plug directly into the 1000 Watt UPS.
I wanted to order a PDU to help ...
10
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3answers
282 views
Should pcs be unplugged before restoring power
We have an upcoming scheduled power outage for maintenance.
UPS protects our servers. But it has been suggested that all PCs should be unplugged to prevent damage from power surges when power is ...
2
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2answers
81 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 ...
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1answer
67 views
Server/Power supply AMP usage
I've been looking into getting some servers with co-location, I've worked with co-lo'd servers before but this is the first time I've actually a rack up.
All co-lo' providers specify a limit on the ...
2
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2answers
146 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
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1answer
110 views
Actions to take during/after a power outage
We're in the process of replacing the shelving in our server room, and I found a piece of paper that had been covered over which lists various actions to take during/after a power outage:
ADSL modem ...
2
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2answers
370 views
APC Smart-UPS Amps - How many amps does it use all by itself?
APC Smart-UPS XL 3000
http://www.apc.com/products/resource/include/techspec_index.cfm?base_sku=su3000rmxl3u&tab=models
I have two of these APC units. They use NEMA L5-30P electrical plugs.
I'm ...
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3answers
197 views
Is it possible to use mixed 110V / 208V power on a single server with dual power supplies?
Is it possible to run a dual power supply server with one PS plugged into 110V, and the other power supply plugged into 208V? We've asked the vendors and they say they've never tested it or some other ...
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7answers
225 views
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 ...
0
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1answer
157 views
Running IBM servers at both 110v and 220v at the same time for a few seconds for power migration?
In our data center we are going to be moving all of our dual power supplied IBM servers (auto sensing 110/220) from an outdated 110 system of dumb power strips to an updated in rack 0u 220 monitored ...
0
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1answer
513 views
Powertop reports “Bad” “Runtime PM for PCI Device”
I've noticed that powertop utility reports "Bad" "Runtime PM for PCI Device" for several devices. Seems that powertop can fix the issue but it won't tell what exactly it does to fix it. What should I ...
28
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5answers
793 views
How to build and run a machine room?
The last guy quit (I think a lot of adventures begin this way?) and I've been given the job to build a new machine room. I am coordinating with 2 engineers, campus ITS, campus Facilities Management, ...
9
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4answers
225 views
Proper Sizing for PDU's/Power in Rack
I've struggled with sizing my power sources and associated PDU's in my server racks. Somehow I feel like I'm way oversizing things based on nameplate requirements on power supplies.
My simplistic ...
21
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5answers
1k views
Best practices for power cabling racks in DC
With network cables it is easy. I use velcro-ties, coloured cables, 0U vertical cable organizers from APC on side of the rack -- easy and neat.
However with power cables it was always giving me ...
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3answers
65 views
ups and an unconfigured server
Say I have got a big room loaded with servers and a big cupboard size battery as a ups. Now the electricity fails. Is there some way for the servers to know that they should shutdown? Does the ups ...
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0answers
332 views
EventID 4098 : Group Policy Power Options gets Access Denied when applying a power scheme
I created a Group Policy Preference on my Server 2008 R2 DC to Update the Always On power scheme and make that the Active Scheme.
I see the GPO apply in GPResult but the power settings do not ...
2
votes
1answer
75 views
Uninterruptible Power Supplies: Line-interactive vs Double-conversion / online
We recently got an inline generator installed at our facility that backs up our IT room. It detects the outage and kicks on within about 20 seconds of an outage. For those 20 seconds between the ...
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vote
2answers
107 views
Is this an NEMA L6-30R Plug?
My employer just bought a building with a decent server room. Before I go out and spend some money on a UPS, I want to confirm that this is actually an NEMA L6-30R (sorry for the poor image). I've ...
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5answers
407 views
Which is better for heat: 120v or 220v?
I've got the following gear in a small 120sqft room. While AC is supplied it's a home/office and in the summer both the central air at full go and a standup indoor portable AC on full barely keep it ...
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1answer
186 views
IBM xSeries 335 General Questions (power usage and installation)
I just received a 2nd hand IBM xSeries 335 1U rack mountable server, and I have a few questions about it:
How do I install it? Is there an Installation Utility disk like for the HP Proliant servers ...
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3answers
94 views
Surge Protection for Servers not Connected to UPS
For servers or network switches not protected by UPS, is there any product to guard against power surges / spikes?
Power conditioners available seem to be for home /audio video usage. Was looking at ...
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2answers
89 views
Placing UPS in front of STS; Connecting Dual PSU to same PDU
The site has 2 x 16A @ 230V, each server/SAN has dual PSU set up.
Options:
1) [2 x 16A] ---> [1 x STS or ATS]----> [1 xUPS]---->[2 x PDU]----->[DUAL PSU]
As can be seen the server is actually ...
4
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2answers
173 views
What's the maximum number of computers I can safely power on a 13-amp supply?
Due to a lack of power in a new office building, I am having to daisy chain strip plugs off a single socket.
Roughly speaking, how many amps does a desktop computer with screen consume?
How many ...
0
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1answer
131 views
Looking for a basic auto-ping power watchdog for my flaky server
My home Mac Mini server keeps locking up, and I was looking into a switch to automatically cycle the power when it stops responding to pings. Is there a simpler/cheaper alternative that devices like ...
1
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2answers
146 views
What UPS would you use for remote network switches?
I came into work this morning to find out that one of our CISCO 2960s had died during the night, I haven't had a chance to figure out why, but I'm guessing a power spike killed it, and the surge ...
2
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1answer
35 views
Application Power
I need to run an application that would consume a lot of power on a laptop. Basically the app must be very power hungry. I know that running a real time games with heavy graphics would consume lot of ...
141
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14answers
3k views
What is this very short power cable called?
I have a couple of networking components in my rack that take giant AC adapters ("power bricks") that don't fit neatly into my rackmount PDU.
I have one "thingy" that is shown below, and I need to ...
3
votes
3answers
133 views
Can USB powered device affect longevity of the port?
Looking to purchase a new DVD Writer for the first time, I notice there are USB powered devices available which do not require an external adapter/power-supply. This may be sufficient for stuff that ...
0
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2answers
479 views
Switching from 120v to 208v power
We are going to switch from 20 amp 120 volt to 20 amp 208 volt circuits in our colocation facility. I am new to dealing with anything other than standard 120v power, so I am unsure of some intricacies ...
0
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3answers
62 views
office power just surged, why can't I connect to any FTP?
Normally I wouldn't bother because the problem will surely be resolved shortly, but I thought someone here might know.
Our office just had a power surge, but now I can't connect to any FTP servers. ...
3
votes
1answer
271 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 ...
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4answers
355 views
How to power on a system automatically when AC Power is back and it was powered off properly?
I have a system in which I have no access to the power button, so I need it to power on automatically.
I have set the 'restore on AC Power Loss' option and it works fine when I turn off the system ...
2
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1answer
183 views
MGE UPS Cut power - What happened?
I have 3 x MGE Pulsar M 3000 2700w UPS units within my server room which have run perfectly up until now.
On Saturday morning I noticed that one of these UPS units was no longer outputting power, ...
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3answers
523 views
Data Center Power Draw Calculation
I have a difficult time calculating the power draw of our upcoming server (Dell R710) and what that means in terms of how a data center will calculate power costs. Hopefully you can help shine some ...
2
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3answers
196 views
Monitoring server room power
I'm looking for a good way to audit the per-rack power utilization in an existing server room. Each rack is powered, for the most part, by a pair of single phase 30A/208v feeds. Is there something ...
2
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1answer
265 views
Will a 20 Amp Circuit Work for 2 servers with 2 PSU ea. needing 9.2 Amp Input Requirement per PSU?
I'm a bit new to the power calculations for electricity at a colocation facility.
I have 2 HP DL580s that are pretty maxed out and this is what the HP power calculators gave me for each server.
Total ...
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4answers
203 views
Should we leave our Xerox Phaser on, or turn them on only when we need them?
Looking for where the cutoff is for keeping the Phaser on, or turning it off.
We have a Xerox Phaser 8550 - and we print to it about once a week. However, we feel like it is burning through a ton of ...
