[ale] Linux Cluster Server Room

[Dow Hurst]

I currently have a mix of UPSes, none of which would support a large cluster. 
  I was thinking of Symmetra's from APC as an option.  Need to do some 
research on this topic.
Dow


Chris Coleman wrote:
> What type of UPS system are you using? Do most install a large UPS system for the entire server room? If so, how much will this cost?
> 
> Thanks,
> Chris
> 
> -----Original Message-----
> From: Dow Hurst [mailto:dhurst at kennesaw.edu]
> Sent: Monday, April 12, 2004 11:20 AM
> To: ale
> Subject: Re: [ale] Linux Cluster Server Room
> 
> 
> Thanks Jonathon!  That is exactly the kind of ballpark I needed!  I don't need
> the vendors right now as we are still kicking around ideas.  If anyone would
> throw some specs or ideas out there, I'd appreciate it.  Here is a quick
> question?  Is planning for double your planned load a good rule?  I would
> think that would be a good idea.  How about backup cooling if the main unit
> dies?  The firesafe is one I had not thought of.
> Dow
> 
> 
> Jonathan Glass (IBB) wrote:
> 
>>How big are the Opteron nodes?  Are they 1,2,4U?  How big are the power
>>supplies?  What is the maximum draw you expect?  Convert that number to
>>figure out how much heat dissipation you'll need to handle.
>>
>>I have a 3-ton A/C unit in my 14|15 x 14|15 server room, and the 24-33
>>node cluster I just spec'd out from IBM (1U, Dual Opterons) was rated at
>>a max heat dissipation (is this the right word?) of 18,000 BTU. 
>>According to my A/C guy, the 3-ton unit can handle a max of 36,000 BTU,
>>so I'm well inside my limits.  Getting the 3-ton unit installed in the
>>drop-down ceiling, including installing new chilled water lines, was
>>around $20K.
>>
>>I do have sprinkler fire protection, but that room is set to release its
>>water supply independent of the other rooms. Also, supposedly, the fire
>>sprinkler heads (whatever they're called) withstand considerably more
>>heat than normal ones.  So, the reasoning goes, if it gets hot enough
>>for those to go off, I have bigger problems than just water.  Thus, I
>>have a fire safe nearby (in the same bldg...yeah, yeah, I know; off-site
>>storage!) that holds my tapes, and will shortly hold a hardware
>>inventory and admin password list on all my servers.
>>
>>If you want my list of vendors, send me an email off-list, or call my
>>office, and I'll see if I can track down the DPOs for you.
>>
>>Thanks
>>
>>Jonathan Glass
>>
>>On Fri, 2004-04-09 at 17:35, Dow Hurst wrote:
>>
>>
>>>If I needed to take an existing space 400 square feet w/8' ceiling, 
>>>20'x20'x8', and add A/C and fire protection for a server room, what kind of 
>>>cost would be incurred?  Sounds like an algebra problem from highschool 
>>>doesn't it?  Let's say a full 84" rack of 4CPU Opteron nodes and supporting 
>>>hardware were in the room.  Does anyone have any ballpark figures they could 
>>>throw out there?  Any links I could be pointed to?
>>>Thank a bunch,
>>>Dow
>>>
>>>
>>>PS.  I'd like some other type of fire protection than sprinkler heads. ;-)
>>
>>
>>
> 

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Dow Hurst                  Office: 770-499-3428            *
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