Re: rack rails

[Ben Cannon <ben () 6by7 net>]

2-post racks (typically 23" not 19” however 19 is making a dent) are still very common in MPOE rooms and OSP plant 
termination.    Minimal space consumption is the prime reason.

Frankly most fiber patch panels are a foot deep and DWDM gear has been designed to be that profile too.

Many carriers bring their own seismic-rated 2-post solutions (think ILECs and some of the bigger CLECs) and continue to 
specify that to this day.

However all new datacenters we build from the ground up, as much as possible, are individual locking 4-post cabs for 
every application.

-Ben.

-Ben Cannon
CEO 6x7 Networks & 6x7 Telecom, LLC 
ben () 6by7 net <mailto:ben () 6by7 net>




> On Mar 30, 2020, at 2:31 PM, Coy Hile <coy.hile () coyhile com> wrote:
>
>
>
> > On Mar 30, 2020, at 5:24 PM, Karsten Elfenbein <karsten.elfenbein () gmail com> wrote:
> >
> > Hi,
> >
> > something like https://www.opencompute.org/projects/rack-and-power
> > comes into my mind for that.
> > Mounting on 4 posts should be the default. It is insane what some
> > vendors want to mount on 2 posts only.
>
> That brings up an interesting question. As I understand it, the penchant for two-post mounts come from what are at 
> least colloquially termed telco racks that are or were common when you had tons of modem banks and such. Are such 
> mounts — much like DC power — still quite common in the service provider space, or do most use more or less normal 
> racks? (That said, the 750mm wide (29.5in) racks that actually have room for high density cables inside the rack seem 
> much more useful for a networking application than the 600mm wide version.)
>
>
>
> --
> Coy Hile
> coy.hile () coyhile com