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29 Jul 2024 18:26:40 EDT (-0400)
  Dual Server Failure (Message 26 to 35 of 65)  
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From: Stephen
Subject: Re: Dual Server Failure
Date: 20 Jan 2012 06:20:43
Message: <4f194e0b@news.povray.org>
On 20/01/2012 10:18 AM, Invisible wrote:
>
> Sure. But given that computers are very low-power devices, you don't
> think of a computer plant as something requiring megawatts of power and
> entire rooms of cooling equipment.

I would not say that computers are *very* low-power devices. As it said 
in the article the containers have a power consumption that can reach 
250 kilowatts. So you only need 4 containers to have to supply a 
megawatt of power. Then add the cooling requirements and the utilities 
and it all adds up.

-- 
Regards
     Stephen


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From: Invisible
Subject: Re: Dual Server Failure
Date: 20 Jan 2012 06:31:42
Message: <4f19509e$1@news.povray.org>
On 20/01/2012 11:20 AM, Stephen wrote:
> On 20/01/2012 10:18 AM, Invisible wrote:
>>
>> Sure. But given that computers are very low-power devices, you don't
>> think of a computer plant as something requiring megawatts of power and
>> entire rooms of cooling equipment.
>
> I would not say that computers are *very* low-power devices. As it said
> in the article the containers have a power consumption that can reach
> 250 kilowatts. So you only need 4 containers to have to supply a
> megawatt of power. Then add the cooling requirements and the utilities
> and it all adds up.

Compared to an industrial cement kiln or a smelting works, a computer 
uses virtually zero power.

The difference, of course, is that we're not talking about a computer. 
We're talking about *thousands* of computers. Much like a light bulb 
uses almost no power, but the entire Blackpool illuminations probably 
use quite a bit of power...

I'm not saying it's wrong, I'm saying it's surprising.


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From: Stephen
Subject: Re: Dual Server Failure
Date: 20 Jan 2012 08:08:10
Message: <4f19673a$1@news.povray.org>
On 20/01/2012 11:31 AM, Invisible wrote:
> I'm not saying it's wrong, I'm saying it's surprising.

Why do you think that it is surprising?

-- 
Regards
     Stephen


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From: Invisible
Subject: Re: Dual Server Failure
Date: 20 Jan 2012 08:10:49
Message: <4f1967d9@news.povray.org>
On 20/01/2012 01:08 PM, Stephen wrote:
> On 20/01/2012 11:31 AM, Invisible wrote:
>> I'm not saying it's wrong, I'm saying it's surprising.
>
> Why do you think that it is surprising?

Or, to put it another way, why do you *not* think it's surprising?

I guess once you already know something, it probably doesn't surprise 
you any more...


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From: Stephen
Subject: Re: Dual Server Failure
Date: 20 Jan 2012 09:41:52
Message: <4f197d30@news.povray.org>
On 20/01/2012 1:10 PM, Invisible wrote:
> On 20/01/2012 01:08 PM, Stephen wrote:
>> On 20/01/2012 11:31 AM, Invisible wrote:
>>> I'm not saying it's wrong, I'm saying it's surprising.
>>
>> Why do you think that it is surprising?
>
> Or, to put it another way, why do you *not* think it's surprising?
>

I have worked in heavy industry and when I worked offshore on production 
platforms I was familiar with most aspects of utilities.

> I guess once you already know something, it probably doesn't surprise
> you any more...

That is true but if you stop and think (no slur intended) you might find 
on reflection it is not really surprising. It is like doing a quick 
mental calculation to see if an answer is in the correct range.
Guesstimate power requirements for 1 server = 200 Watts
Power for 1000 servers in a container (X 1000) 200 KW
Power for 12 containers = 2.4 MW. See no surprise. ;-)

-- 
Regards
     Stephen


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From: Invisible
Subject: Re: Dual Server Failure
Date: 20 Jan 2012 10:21:10
Message: <4f198666@news.povray.org>
>> I guess once you already know something, it probably doesn't surprise
>> you any more...
>
> That is true but if you stop and think (no slur intended) you might find
> on reflection it is not really surprising. It is like doing a quick
> mental calculation to see if an answer is in the correct range.
> Guesstimate power requirements for 1 server = 200 Watts
> Power for 1000 servers in a container (X 1000) 200 KW
> Power for 12 containers = 2.4 MW. See no surprise. ;-)

I guess the thing is, most people will never, ever see 1000 computers...


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From: Jim Henderson
Subject: Re: Dual Server Failure
Date: 20 Jan 2012 12:02:15
Message: <4f199e17$1@news.povray.org>
On Fri, 20 Jan 2012 09:12:41 +0000, Invisible wrote:

>>> Pictures or it didn't happen. :-P
>>
>> http://www.youtube.com/watch?v=zRwPSFpLX8I perhaps?
> 
> ...the HELL?! o_O
> 
> 1. I had no idea they had this many computers.

It hit a number of the sites a couple years ago (see the date on the 
video)

> 2. I had no idea it required engineering on this scale to run that many
> computers.

You've got to manage them *somehow*, right?

> 3. That seems like quite a lot of empty space, actually...

You have to circulate air to keep things cool.  Overheating in such an 
environment could be a serious problem.

Jim


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From: Jim Henderson
Subject: Re: Dual Server Failure
Date: 20 Jan 2012 12:03:19
Message: <4f199e57$1@news.povray.org>
On Fri, 20 Jan 2012 10:18:25 +0000, Invisible wrote:

> Sure. But given that computers are very low-power devices, you don't
> think of a computer plant as something requiring megawatts of power and
> entire rooms of cooling equipment.

I've done work in a 20,000 sq. ft. data center.  Data centers are big 
business these days.

Jim


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From: Darren New
Subject: Re: Dual Server Failure
Date: 21 Jan 2012 12:42:46
Message: <4f1af916@news.povray.org>
On 1/20/2012 2:18, Invisible wrote:
> Sure. But given that computers are very low-power devices, you don't think
> of a computer plant as something requiring megawatts of power and entire
> rooms of cooling equipment.

Each of those containers has over 1000 computers in it. There's 50 
containers in this one building. (That's a small building for Google.) This 
is from 2005 or so, when computers weren't as efficient.  So how much power 
do you think it takes to run 50,000 computers, plus air conditioning for 
them, if each has (say) 150W power supply?

-- 
Darren New, San Diego CA, USA (PST)
   People tell me I am the counter-example.


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From: Le Forgeron
Subject: Re: Dual Server Failure
Date: 23 Jan 2012 02:23:08
Message: <4f1d0adc$1@news.povray.org>
Le 20/01/2012 18:02, Jim Henderson a écrit :
>> > 2. I had no idea it required engineering on this scale to run that many
>> > computers.
> You've got to manage them *somehow*, right?
> 


Wondering if they are running MS Windows:
 1. Did they get a rebate on number of license ?
 2. In case of security update, did they all update & reboot at the same
time ?

Obviously, they are not using Apple's computers.


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