[123368] in North American Network Operators' Group
Re: FreeAxez raised flooring?
daemon@ATHENA.MIT.EDU (Wayne E. Bouchard)
Fri Mar 5 14:15:59 2010
Date: Fri, 5 Mar 2010 12:15:39 -0700
From: "Wayne E. Bouchard" <web@typo.org>
To: Owen DeLong <owen@delong.com>
In-Reply-To: <0DB35DA7-9BF8-40CC-A9E5-AB74D06CD5A9@delong.com>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.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/
