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  #1  
Old
Junior Guru Wannabe
 
Join Date: Mar 2009
Posts: 47

Power in Datacenters


Hello,

We currently have 1 Rack in LA and wanted to make some changes to power.

We are looking in upgrading our power from 1 x 120V A+B to 1 x 208V A+B single phase and keeping 1 x 120V A up for console server access.

The Datacenter wanted to increase our Base Rent for the Rack almost double per month and charge for the power in addition.

Is this normal?

Thanks

Daniel



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  #2  
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Aspiring Evangelist
 
Join Date: Mar 2007
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If they have space issues or are near capacity, then it's absolutely normal. Between those three circuits, you'll be getting about twice as much power as you currently have. If they have limited space or power density, that means they can't sell that much floor space to someone else.

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  #3  
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Newbie
 
Join Date: Aug 2011
Location: San Diego, CA
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120V is about 1.92 usable kW (at 20 Amps). If you added another 208V line, you're getting an additional 3.32kW (assuming both are 20Amp Drops). So 5.24 total usable power more than doubles your existing capacity. This would most likely be a significant increase in monthly recurring costs (especially in CA).

Are you sure you need that much power?

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  #4  
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Junior Guru Wannabe
 
Join Date: Nov 2011
Location: Los Angeles
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Yes, the increase is pretty much inline with what other providers are offering in LA. Power and cooling are a huge component of colocation costs, you cannot expect more power with additional charges.

  #5  
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CLOUD will fix EVERYTHING...
 
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you want to triple your power from your current allocation... that means high density in just a single rack, you will pay a premium for that.

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  #6  
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Quote:
Originally Posted by DannyT View Post
The Datacenter wanted to increase our Base Rent for the Rack almost double per month and charge for the power in addition.
Yes it is normal. A rack rental cost (in fact, floor space rental cost, per sqft) is a direct factor of the amount of power used on it. Datacenters are designed for a certain maximum amount of Watts per square foot (due to HVAC cooling and generator capacity). If you start using more watts, you need to pay for more square feet; or in a single-rack scenario, more per rack (the base rack rental rate).

  #7  
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THE Web Hosting Master
 
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Quote:
Originally Posted by CGotzmann View Post
you want to triple your power from your current allocation... that means high density in just a single rack, you will pay a premium for that.
I agree to expect the price increase (power + cooling are easily the biggest price component in colocation), but 5.2kw usable per cabinet isn't really "high density."

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  #8  
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more than 40A 120v equivalent per rack in most facilities will be considered high density... sure there are higher densities capable, but above 40a 120v equivalent is when you start being considered a higher density load.

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  #9  
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THE Web Hosting Master
 
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Quote:
Originally Posted by CGotzmann View Post
more than 40A 120v equivalent per rack in most facilities will be considered high density... sure there are higher densities capable, but above 40a 120v equivalent is when you start being considered a higher density load.
Our most common power config is 30A 208v (5kw) and I wouldn't really call that high density myself. I guess it is just different with different facilities, but these days I'd say ~7.5kw+ is high density.

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  #10  
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Now renamed!
 
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Quote:
more than 40A 120v equivalent per rack in most facilities will be considered high density...
That is around 20A 240V...not much.
Most european colos do 2x16-20A 230V which is almost 80A 120v...

  #11  
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Quote:
Originally Posted by Zhang View Post
That is around 20A 240V...not much.
Most european colos do 2x16-20A 230V which is almost 80A 120v...
Can't European Colos can just open the doors to cool the place, especially at the moment. Saves 1/2 the power. Not as easy in LA.

  #12  
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Join Date: Aug 2010
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Quote:
Originally Posted by david_halliday View Post
Can't European Colos can just open the doors to cool the place, especially at the moment. Saves 1/2 the power. Not as easy in LA.
Fresh air cooling is actually getting common in normal dc's over the evening periods etc.

  #13  
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Web Hosting Guru
 
Join Date: Jan 2011
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Quote:
The Datacenter wanted to increase our Base Rent for the Rack almost double per month and charge for the power in addition.

Is this normal?
It is just normal, additional charges especially on that matter is just normal!

  #14  
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Junior Guru
 
Join Date: Mar 2008
Location: Lisbon, Portugal
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Quote:
Originally Posted by david_halliday View Post
Can't European Colos can just open the doors to cool the place, especially at the moment. Saves 1/2 the power. Not as easy in LA.
In Europe 2x 16 or 20A 230V its normal thing...

  #15  
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You could always change over to the 1 x 208V A+B and then use a Transformer to step down the 208V to 120V. This would save you the monthly cost of keeping the 1 x 120V A just for console server access or what ever else still needs 120V only.

The APC9626 comes to mind... It costs around $500 and it's good for up to 500VA. Most likely more watts then you'll need but if you look around there are always smaller units to be found.
http://www.apc.com/resource/include/...ase_sku=AP9626

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