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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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What less obvious ways are there to misuse and damage a UPS?

I've never had an uninterruptible power supply and think of buying one. What not-so-obvious things should I not do to the UPS so that it lives longer? I don't mean some obvious abuse like dropping/exposing to direct heat/exposing to wrong voltage. I…
sharptooth
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Datacenter Power Consumption Table

Does anyone know of a good centralized resource that contains a consolidated list of server specifications relevant to the data center? Looking for Rack U sizing, power consumption, etc. for different branded servers directly from vendor web sites…
Keith
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"Zinc Whisker" issues?

Good morning; We've been having intermittent power supplies failures in our data center that have been preliminarily attributed to "zinc whiskers". I'm just starting to read about them (I just Googled the term and started picking stuff), and I'm…
Dizzle
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Which is better - 30 AMP 220V circuit or 60 AMP 120V circuit

I'm looking for advice on which electrical service I should have run to a rack that I have in a data center. The price is the same for either a 30 AMP 220V circuit or a 60 AMP 120V curcuit. I realize that these two curcuits are delivering effectivly…
Richard West
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Dual power supplies on the same circuit

As the title says, I have two power supplies in a server on the same circuit. The circuit is connected to surge protection, power filtering, and UPS. The only reason I use both power supplies is because: I'd like to be prepared against a failing…
Ken - Enough about Monica
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Securing power cables

It's always annoyed me that while the sockets for network, serial, parallel and display cables all have securing mechanisms (ie a screw-in bolt, or a clasp) to stop them from being pulled out by jostling, there's nothing similar on power sockets (ie…
Gavin Brown
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How do I configure Ubuntu Server to power down drives when not used?

I just got home file server, and it contains 7 hard drives. I installed on it Ubuntu Server (Jaunty). What should I do to make it power down drives when they are not in use (most of the time they will not be used). All of them are sata drives,…
user13185
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Do I have an under-voltage issue in my data room I need to address?

I recently had a UPS fail to do its job during business hours because I didn't realize it had already reached the end of its useful life. Yes, the battery was old and, yes, I should have manually tested it during off hours to discover the issue…
Chris76786777
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Green-IT: How do you deal with poweroff systems in your system monitoring?

Many of you probably have completed or are contemplating Green-IT projects with the goal to power off idle or unneeded systems when demand for computer resources is low: How you did handle this situation in your system monitoring? I'm especially…
knweiss
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Open source DCIM stack?

Our 500-server data center is growing quickly and my manager has started investigating using a specialized Data Center Infrastructure Management (DCIM) package to help manage constraints. DCIM software aims to do everything: capacity planning,…
slggrd
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Power consumption of a computer in sleep mode?

How much power do (relatively new) computers consume while in sleep mode? By sleep mode, the computers' fans are turned off, producing no noise; and the LED on the power button blinks. Do I need to be concerned about the power used in this state…
unknown
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Is there a solution against short power outages except UPS?

I encounter very short power outages quite often. Typically they last for just couple of seconds - perhaps the power grid maintenance staff just flips the switch to "Off" and then immediately to "On". However this is enough for all kinds of IT…
sharptooth
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Vista Power Management GPO

I've created a loopback GPO that has several settings (both computer and user) including a Custom User Interface (Access 2007 Application) and Power Management (has the computer sleep after being idle for 2 min). I'm also filtering so that this…
user9573
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Will spinning down hard disks create Linux Raid problems?

I'm setting up a server that will need to be accessible 24/7 but will be rarely accessed (archive storage). To save heat/power, I'm thinking of setting hard disks to spin down using hdparm. However, I wondered if this could cause unreliability as…
bugmenot77
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6 answers

Server power supply failures?

I have 6 servers both with 2 power supplies attached to an UPS. I want to add 4 more servers but the UPS is full and due to budget restriction I couldn't buy a new one for months. The 6 + 4 new servers are running essential services (high uptime…
Kami
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