Re: FreeAxez raised flooring?

["Wayne E. Bouchard" <web () typo org>]

On Sat, Mar 06, 2010 at 02:54:42AM +0800, Owen DeLong wrote:
> On Mar 6, 2010, at 2:41 AM, William Herrin wrote:
>
> > On Fri, Mar 5, 2010 at 12:54 PM, Owen DeLong <owen () delong com> wrote:
> > > Not sure about the purpose of a raised floor if it doesn't create a plenum, but, the
> > > step forward from raised-floor plenum is hot-aisle/cold-aisle which requires a good
> > > bit more discipline in your datacenter, but, is substantially more efficient.
> >
> > Hi Owen,
> >
> > Hot-aisle/cold-aisle is a separate issue from a raised floor plenum.
> > They're mutually supportive but not mutually dependent.
> I've never seen anyone do hot asile/cold aisle using raised floor.
>
> Overhead cabling has become the norm in most modern installations
> and once you go to hot aisle/cold aisle, you no longer need the lower
> plenum, so, while they can be mutually supportive, neither requires
> the other, and, in practical modern usage, hot-aisle/cold-aisle usually
> precludes the need for the additional expense of raised floor.
>
> Absent the need for the expense of the raised floor, it's rarely
> installed in my experience, thus making them mutually exclusive
> for most practical terms.
>
> Owen

Actually, my experience has been that most of the newer installations
(last 5-7 years) that I have been able to see where raised floor is
employed are also doing hot/cold rows.

-Wayne

---
Wayne Bouchard
web () typo org
Network Dude
http://www.typo.org/~web/