# Thread: How many 4 post racks in a 10x15?

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## How many 4 post racks in a 10x15?

How many 4 post racks (no doors) can you get in a 10x15?

I guess it all depends on the spacing requirements by the datacenter. (Which we will have to abide by)

We are in California. We'll probably be getting a bigger space than this, but this is what we're being quoted on & they guesstimate that 6 to 8, 4 post racks can fit. I think more like 10-12.

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How deep are the racks?

When we figure out spacing we figure you need at least 50" of space between rows. You'll need that much space to install deep servers such as dells or HPs.

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10*15 what ? metres ? feet ?

it will depend on the rack sizes, ideally you'll need as much or more gap betweek rows to allow for moving racks around, whole floor tiles between them to make cabling/underfloor work easier etc

10*15 (feet) - 2 rows of 5 racks 600*900(or 1000) deep ...

assuming you divide it up into 5 3ft wide channels 3/3/3/3/3 = a/b/c/d/e

a=room to work beind 1st row
b=first row
c=room to work between rows
d=second row
e - room to work in front of 2nd row

etc

We "plan" 10 racks per 144sqft

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Originally posted by othellotech

We "plan" 10 racks per 144sqft
That's a pretty dense floor plan, just 14sqft per rack ... roughly 300 watts per sqft, with 40 amps per rack.

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s'hardly dense - pop over for a tour most peopel cram them in @ sub10sqft per rack :p

depends on the quality of the power and cooling systems - we dont like it cramped and can manage easily 16-20a per rack @ 240v with adequate cooling to maintain 20.6deg even during the hottest summer on record !

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Wish I was a bit closer -- and I would pop over

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make sure you take into account the door and wether it opens in or out , i've seen cages where the door opens in and that can put some restrictions on your layout.

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number nine, number nine, number nine (name that Beatles song)

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That's a pretty dense floor plan, just 14sqft per rack ... roughly 300 watts per sqft, with 40 amps per rack.

We work on 15sqft per rack (e.g. 12 racks in 180sqft - 2 rows of 6 racks in a 12x15 suite), and there's more than enough room to work with. There are suites near us which make us look like we're wasting space!

We run 2x 16A power feeds to each rack (and that's @ 240V), and we've not had any cooling issues - just taken a look and the intake temperature on a few of our servers is between 20 and 21 degrees C. I make that roughly 500W/sqft, but it's early so I may be way off! We obviously don't draw that full power, but we've certainly got some racks using 20+A each.
Last edited by robinbalen; 06-17-2005 at 03:45 AM.

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You need to find out how much power they're willing to give you in that 150 sqft. The datacenter i'm in has density limited to 1A per sqft. If that's the case, you'll not be safe running more than 7 or 8 racks with 20A each.

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several of the uk datacentres are somewhat better specc'd than that - biggest issue isnt hte power, its the cooling and the costs.

[email protected] (eqv to 80-90a US power) per 15sqft is not uncommon. - i.e. about 6 times what your DC offers you.

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Jeff, how in the world can you deal with 15amps per rack (15sqft for a rack is more than enough IMHO)??? You put 3 servers on a rack? Some of our dell dual xeon servers can take up to 5 amps each. Storage arrays and other devices take up a lot of power. Typically we use 80amps per rack (4 120v circuits). We use even more wattage density with our blade servers which require 208v power.

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5 amps seems to be alot for a dual xeon. At startup, they do take alot of power though.

80 amps a rack seems alot of heat to deal with.

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Originally posted by smueller
Jeff, how in the world can you deal with 15amps per rack (15sqft for a rack is more than enough IMHO)??? You put 3 servers on a rack? Some of our dell dual xeon servers can take up to 5 amps each. Storage arrays and other devices take up a lot of power. Typically we use 80amps per rack (4 120v circuits). We use even more wattage density with our blade servers which require 208v power.
I never said anything about 15A per rack . In any case, i'd rather be in a facility where there are strict guidelines about the electric density so the guy next door with 80A per cabinet isn't pushing heat my way.

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You put 3 servers on a rack? Some of our dell dual xeon servers can take up to 5 amps each
Which is why people serious about power usage in quality datacentres dont use Dell hardware (radiators as they are more commonly known)

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Originally posted by othellotech
Which is why people serious about power usage in quality datacentres dont use Dell hardware (radiators as they are more commonly known)
Do other providers manage to break the laws of physics?

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Our Dell Dual Xeons (SC1425's) draw about 1.7-1.9A each, Why are Dell's known as "radiators"? Mine dont' run that hot.

Matt

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its ok - dont worry

Rob's always hated Dell servers and always will do

He's a supermicro man - isnt that right Rob?

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