1. Junior Guru
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## server power calculation

Our supermicro 5015m-mt+b has a 300W power supply with AC Voltage 100 - 240V, 60-50Hz, 5 Amp (See http://www.supermicro.com/products/s...-5015M-MT_.cfm)

We were having an argument with the DC on the amp usage in our rack. They claim the amp is calculated by 100V x 5 Amp = 500 / 230v = 2.17?

We argued it should be calculated by 300W / 230v = 1.304 amps.

Who is correct?

2. Corporate Member
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neither. both are totally wrong.

the power use has very little to do with the maximum that the power supply is capable of, but instead what hardware you are using in the server.

it is extremely unlikely that your server uses anything close to that amount of power. what processor, memory, drives, etc does your server use?

edit: looking at the system you linked to, I would be surprised if it used more than 0.75a @ 230v, and probably more like 0.5-0.6a @ 230v

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The server has 8gb ram, raid card, 3 sata II disks, intel quad core x3200 cpu and IPMI card.

The problem is the data center does not have a power strip load meter and we are calculating based on the server specs.

4. Corporate Member
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Originally Posted by nowanda
The server has 8gb ram, raid card, 3 sata II disks, intel quad core x3200 cpu and IPMI card.

The problem is the data center does not have a power strip load meter and we are calculating based on the server specs.
If they have no idea how much power it's using, how can they charge based on usage?

In any case, the very most it is likely to be using is around 150 watts, but I would say 120 watts is more likely from my experience.

I have to question what kind of "datacenter" doesn't have at the very least a power meter they can use on a temporary basis to get an idea of your server's actual power use. Even my \$150 APC ups can measure accurate to a few watts, and a plug in power meter costs something like \$20.

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Who is the data center? That is really weird if they calculate it that way.

6. Newbie
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Originally Posted by nowanda
Our supermicro 5015m-mt+b has a 300W power supply with AC Voltage 100 - 240V, 60-50Hz, 5 Amp (See http://www.supermicro.com/products/s...-5015M-MT_.cfm)

We were having an argument with the DC on the amp usage in our rack. They claim the amp is calculated by 100V x 5 Amp = 500 / 230v = 2.17?

We argued it should be calculated by 300W / 230v = 1.304 amps.

Who is correct?
Hey there,

sounds to me that you might want to consider migrating to another DC. I would recommend Global Switch, they offer data center space all over the world.
This is taken from their website:

"Key benefits of the Global Switch Racks:

* Secure and resilient infrastructure
* Controlled environment
* Managed cabling solutions
* Power consumption based on agreed specification

You agree beforehand with them the power consumption specs so you know what you pay exactly.
Hope that helps!

Zach

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Originally Posted by ZachMoody
Hey there,

sounds to me that you might want to consider migrating to another DC. I would recommend Global Switch, they offer data center space all over the world.
Are you using them?

One thing that I don't like with company like this is they have a secret price. Why not post it in their site?

8. Newbie
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May 2011
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Originally Posted by net
Are you using them?

One thing that I don't like with company like this is they have a secret price. Why not post it in their site?
There is no secret price, it's just that a quote is given to each customer depending on their needs. I can't give you the information from the company where I work because
A I don't have access and
B I'm pretty sure I'm not supposed to hand out company details

I just know they're good at what they do so maybe ask them for a quote? Just my 2 cents.

Zach

9. Web Hosting Guru
Join Date
Apr 2011
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Originally Posted by net
Are you using them?

One thing that I don't like with company like this is they have a secret price. Why not post it in their site?
Looks like he works on SEO for them because of posting links with very good keywords in it instead of posting link in the name of the company as everybody do.

10. Newbie
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Originally Posted by YuriyK
Looks like he works on SEO for them because of posting links with very good keywords in it instead of posting link in the name of the company as everybody do.
Hey Yuri,

11. Junior Guru
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Jun 2004
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Originally Posted by net
Who is the data center? That is really weird if they calculate it that way.
Sorry, I cannot mention the DC but yeah calculation on mere published specs and not on actual usage is really weird and unfair!

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