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  1. #1

  2. #2
    Join Date
    Apr 2005
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    Seattle, WA
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    The two values I've seen are 25 sq ft and 20 sq ft per cabinet... If you are doing two-post open racks I'm sure that would be lower, but spacing is still similar as you need to account for manipulating servers and cooling rows etc.
    Anthony M. Faoro II - tmf [at] adtaq.com - (425) 444-8787 ex 7000
    Seattle Colocation @ Adtaq Internet | Seattle, WA | Be Happy!
    AIM TonyAdtaq | GTalk tmf [at] adtaq.com

  3. #3
    Join Date
    Dec 2001
    Location
    Toronto, Ontario, Canada
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    Most 4 post racks are around 22" wide (say 24" for ease of calculations), and around 2.5' (30") deep. Considering you need roughly 3' both in front, and behind a row of racks, you can expect each rack to require roughly 24" * (36" + 30" + 36"), or around 17sqft, cabinets should count on at least 18sqft/ea.

    An additional 2-3' walkway should be added somewhere in the row (to get from front/back, unless you can get multiple doors added to your cage), additional rows can share the back (hot) row, so each additional row that can be added will increase the space utilization. Generally speaking, the shared back row will even out the additional space that must be left for a walkway (assume you'll loose around 27sqft for a 3' wide walkway between the front/back of the row).

    With only 20A per rack or cabinet, there shouldn't be any serious concerns for cooling that type of setup.

    3' walkways are required in some places (S&D claims its to maintain compliance with a disabled workers act for example), but not all, its simply a typical/suggested value. You can go with less, but maneuvering may become a problem which cannot be easily resolved down the road (esp if you have servers with tricky rail mechanisms, cable ties/rings/loops, etc.)

  4. #4
    Join Date
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    Just stack your servers in a corner and duct-tape them together.

    We're doing 1 two-post open per 20 sq ft inside cages.

    Awknet - DDoS Mitigation, Upstream ACLs/Filtering, Unmanaged Dedicated Servers, BGP IP Transit & More!

  5. #5
    Join Date
    Dec 2001
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    Toronto, Ontario, Canada
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    Quote Originally Posted by jwr
    Just stack your servers in a corner and duct-tape them together.
    Do you really think its a good idea to give out that kinda advice, taking to mind that this is WHT we're talking about, and its bound to happen

  6. #6
    Join Date
    Feb 2004
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    Quote Originally Posted by porcupine
    Do you really think its a good idea to give out that kinda advice, taking to mind that this is WHT we're talking about, and its bound to happen

    It would make for a funny "pictures of our datacenter" thread!

    Awknet - DDoS Mitigation, Upstream ACLs/Filtering, Unmanaged Dedicated Servers, BGP IP Transit & More!

  7. #7
    Generally rackmounts cool from front to back. so in front of every rack you should request to have perforated panel put in place. So you basically have a cold isle, hot isle, cold isle. This allows servers to cool and hot air from 2 rows to be pushed into 1 isle.
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  8. #8
    Join Date
    Apr 2005
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    Seattle, WA
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    Quote Originally Posted by jwr
    Just stack your servers in a corner and duct-tape them together.
    No wonder I'm not making any sales... All these years I've been using masking tape!
    Anthony M. Faoro II - tmf [at] adtaq.com - (425) 444-8787 ex 7000
    Seattle Colocation @ Adtaq Internet | Seattle, WA | Be Happy!
    AIM TonyAdtaq | GTalk tmf [at] adtaq.com

  9. #9
    Join Date
    Dec 2001
    Location
    Toronto, Ontario, Canada
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  10. #10
    Join Date
    Nov 2001
    Location
    Atlanta, GA
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    Quote Originally Posted by jwr
    Just stack your servers in a corner and duct-tape them together.
    Actually, I've gotta rig up one of those things they have at the dry cleaner's. Just press a button and wait until the server you need rotates into place
    Former owner of A Small Orange
    New owner of <COMING SOON>

  11. #11
    Join Date
    Jul 2004
    Posts
    352
    Quote Originally Posted by timdorr
    Actually, I've gotta rig up one of those things they have at the dry cleaner's. Just press a button and wait until the server you need rotates into place
    Hehe....I need to get one of those!!!

  12. #12
    Join Date
    Feb 2004
    Posts
    962
    Quote Originally Posted by mams482
    Is their a general rule for How much Cage Sq. Footage you need per 19inch rack in a Cage. (20 amps per rack)

    Per Rack= #? Sq Foot.
    Definitely depends on the racks you use. Our cabinets are 42" deep, and 30" wide from wrightline. We base a number of 25 ft^2 per cabinet, which helps for cooling density and clean wiring.

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