No raised flooring? cold air from above?
Do vents all line the exterior walls? Just judging from the garage door, is the cold air entering from ~15-20 ft.?
are you doing hot aisle/cold aisle?
Was this building custom built?
or re-purposed with warehouse racks?
The high ceiling are nice, assuming the cooling intake is all the way up on the ceiling.
Do vents all line the exterior walls? Just judging from the garage door, is the cold air entering from ~15-20 ft.?
are you doing hot aisle/cold aisle?
Was this building custom built?
or re-purposed with warehouse racks?
The high ceiling are nice, assuming the cooling intake is all the way up on the ceiling.
We are doing hot/cold aisle. Our engineers assure us the high ceilings and concrete will do a lot of the work dissapating the heat for us.
so I assume then the venting on the side is an attempt to use force airflow for cooling. Each pass over a hot aisle will dilute the cooling to the center most rows. In essence you'll be fighting thermal dynamics and having to over cool (and waste much more energy) attempting to reduce hot spots in the center. Higher hardware failures and reduced performance (some hardware will under-clock itself to reduce temp) in the center of the center aisle (or other areas, depending on how the forced flow venting is positioned). While concrete does have decent thermal conductivity, unless the air you are pumping is warmer than the external temperature, it will actually warm the air coming from the wall adjacent venting (see 4th photo on your initial post). Essentially your venting will be cooling the wall first, then the equipment. Furthermore, the first hot aisle will create thermal turbulence in cooling airflow, thus giving inconsistent results to your cooling attempts. This is why most data centers have moved toward something like what's in this simple image:
now I'm not trying to troll or dig on you, more so trying to give potential improvements, but this would be an issue better dealt with prior to having hardware on the racks which will only create migration complexity in the future. The user experience to watch out for, if this is the going forward scenario, is constant complaints of "I have 4 identical units with 1 (located in a possible hot spot) that consistently under performs."
Also, another consideration, when in a heterogeneous hardware situation (I assume you'll be hosting many different brands) and user controlled overclocking your thermal zones will be in constant flux. I just feel concern that this will create the dreaded whack-a-hot-spot situation many early data centers experienced. Without a view of your actual cooling plan, I can only go by what I see in the photo.
Take some pictures of the Cooling planned. 
I too would love to see these.
Edit: Great resource if your looking to leverage some free advise http://hightech.lbl.gov/datacenters.html