In article <m199mj.1r8.1@stefan.msgid.phost.de>,
Stefan Reuther <stefan.news@arcor.de> wrote:
>Precisely. A 19" rack is one specific type of rack, with a specific
>width and depth, and specific mounting holes. You can probably get some
>kind of IKEA furniture that is 19 inches wide and which would possibly
>even be able to hold some electronic equipment,
On 2014-10-10, Robert Wessel <robertwessel2@yahoo.com> wrote:
> On Thu, 09 Oct 2014 17:31:45 -0400, "Michael A. Terrell"
><mike.terrell@earthlink.net> wrote:
>
>>
>>Stefan Reuther wrote:
>>>
>>> Michael A. Terrell wrote:
>>>
>>> > None of your electronics is 19" rackmount?
>>>
>>> That's the same trick they used for floppies: "19-inch rack" is a type
>>> specification, not a size, much like "3-1/2 inch floppy" is a type
>>> specification for a magnetic disc within a 89mm plastic case.
>>
>> Not a size? So you can shove anything you want, into a 19" relay
>>rack? Just because you tack a metric measurement on it, doesn't mean it
>>isn't 19".
>
>
> I think his point is that (usually) none of the actual dimensions on a
> 19" rack are actually 19 inches.
The largest width dimension on the installed equipment is 19"
(that's edge-to-dege on the "ears", (or across the front panel, if it
has a single-piece front that bolts to the rails)
--
umop apisdn
Reply by ●October 10, 20142014-10-10
On Thu, 09 Oct 2014 21:25:55 -0500, Robert Wessel
<robertwessel2@yahoo.com> wrote:
>On Thu, 09 Oct 2014 17:31:45 -0400, "Michael A. Terrell"
><mike.terrell@earthlink.net> wrote:
>
>>
>>Stefan Reuther wrote:
>>>
>>> Michael A. Terrell wrote:
>>>
>>> > None of your electronics is 19" rackmount?
>>>
>>> That's the same trick they used for floppies: "19-inch rack" is a type
>>> specification, not a size, much like "3-1/2 inch floppy" is a type
>>> specification for a magnetic disc within a 89mm plastic case.
>>
>> Not a size? So you can shove anything you want, into a 19" relay
>>rack? Just because you tack a metric measurement on it, doesn't mean it
>>isn't 19".
>
>
>I think his point is that (usually) none of the actual dimensions on a
>19" rack are actually 19 inches.
Nonsense.
Reply by DecadentLinuxUserNumeroUno●October 10, 20142014-10-10
On Fri, 10 Oct 2014 18:48:51 +0200, Stefan Reuther
<stefan.news@arcor.de> Gave us:
>Robert Wessel wrote:
>> On Thu, 09 Oct 2014 17:31:45 -0400, "Michael A. Terrell"
>>>Stefan Reuther wrote:
>>>>Michael A. Terrell wrote:
>>>>> None of your electronics is 19" rackmount?
>>>>
>>>>That's the same trick they used for floppies: "19-inch rack" is a type
>>>>specification, not a size, much like "3-1/2 inch floppy" is a type
>>>>specification for a magnetic disc within a 89mm plastic case.
>>>
>>> Not a size? So you can shove anything you want, into a 19" relay
>>>rack? Just because you tack a metric measurement on it, doesn't mean it
>>>isn't 19".
>>
>> I think his point is that (usually) none of the actual dimensions on a
>> 19" rack are actually 19 inches.
>
>Precisely. A 19" rack is one specific type of rack, with a specific
>width and depth, and specific mounting holes. You can probably get some
>kind of IKEA furniture that is 19 inches wide and which would possibly
>even be able to hold some electronic equipment, but that wouldn't be a
>'19" rack'.
>
>
> Stefan
Specifically, with that in mind. A "19" rack" is a cabinet of various
heights, but with a specific front side opening and front side rail face
mounting hole configuration.
If that opening does not match or the drilled hole pattern, it cannot
be called a 19" rack, because the devices meant to mount in such
cabinets are what define the standard, and both have to marry.
The original equally spaced drill pattern was abandoned for the current
schema.
So, it is about what industry elements mount in it that defines what
one can properly call any given cabinet.
Reply by Stefan Reuther●October 10, 20142014-10-10
Robert Wessel wrote:
> On Thu, 09 Oct 2014 17:31:45 -0400, "Michael A. Terrell"
>>Stefan Reuther wrote:
>>>Michael A. Terrell wrote:
>>>> None of your electronics is 19" rackmount?
>>>
>>>That's the same trick they used for floppies: "19-inch rack" is a type
>>>specification, not a size, much like "3-1/2 inch floppy" is a type
>>>specification for a magnetic disc within a 89mm plastic case.
>>
>> Not a size? So you can shove anything you want, into a 19" relay
>>rack? Just because you tack a metric measurement on it, doesn't mean it
>>isn't 19".
>
> I think his point is that (usually) none of the actual dimensions on a
> 19" rack are actually 19 inches.
Precisely. A 19" rack is one specific type of rack, with a specific
width and depth, and specific mounting holes. You can probably get some
kind of IKEA furniture that is 19 inches wide and which would possibly
even be able to hold some electronic equipment, but that wouldn't be a
'19" rack'.
Stefan
Reply by Daniel Mandic●October 10, 20142014-10-10
Don Y wrote:
> Hi,
>
> I've rescued a couple of Atom-based SBC's. Essentially
> diskless workstations.
>
> Am I correct in assuming these are just "yet-another-x86"?
>
> Are there any downsides/upsides/problems to watch for
> when porting desktop OS's/apps to these sorts of boards?
> Or, just treat it like any other x86 (686?) for all
> practical purposes?
>
> Should I accept more of them? (within reason) Or, are
> they just "ho-hum" (dust collectors)?
>
> (Boxes in question are 1.6GHz, <4G DDR2, with all the
> typical "PC" I/O's)
>
> Thx,
> --don
Single-core (i686....) CPU with Hyper-Threading, AFAIK.
I have a Netbook with that CPU and have not met any incompatibility
while using Windows XP. A friend of mine is using linux on his Atom
Netbook. I guess the Atom-based systems are working quiet well with
Microsoft Windows and Unix for PC's.
They have a very low power-consumption (even when on full-throttle).
They are slow, compared to CPUs above 30W power consumption.
A balanced i3 i5 and even i7 system gives you nearly the same idle
power-consumption as an Atom, but when it throttles, you have to take
care of the approximately 26W 45W and 90W thermal-dissipation, what it
takes to throttle a fast i3 i5 and i7 system to full-speed...
My base machine is an Alaska C60 APU (ASUS C60M1-I). Dual-Core 1GHz AMD
APU. 7W idle 11W max. Passive cooled.
Slow..... but.
--
Daniel Mandic
Reply by DecadentLinuxUserNumeroUno●October 10, 20142014-10-10
On Thu, 09 Oct 2014 23:27:01 -0400, "Michael A. Terrell"
<mike.terrell@earthlink.net> Gave us:
>
> They are, with specific tolerance to make sure the equipment fits
>neatly between the rails and math the specified height increment. Relay
>racks have been around for over 100 years.
I cannot imagine why none of these dopes could manage to examine to
friggin' wiki site.
It has the history. It also lists numerous alternate information
sources.
Most of which are listed as sources for the site material.
Anyone ever stop to think that it may have been meant to declare the
maximum length of a device chassis? That way, the rack cabinet
designers and the system integration engineers can manage the "back of
the rack" particulars better.
I have had problems with HP and their FOOL length DL 360 server
chassis.
Reply by Michael A. Terrell●October 10, 20142014-10-10
Robert Wessel wrote:
>
> On Thu, 09 Oct 2014 17:31:45 -0400, "Michael A. Terrell"
> <mike.terrell@earthlink.net> wrote:
>
> >
> >Stefan Reuther wrote:
> >>
> >> Michael A. Terrell wrote:
> >>
> >> > None of your electronics is 19" rackmount?
> >>
> >> That's the same trick they used for floppies: "19-inch rack" is a type
> >> specification, not a size, much like "3-1/2 inch floppy" is a type
> >> specification for a magnetic disc within a 89mm plastic case.
> >
> > Not a size? So you can shove anything you want, into a 19" relay
> >rack? Just because you tack a metric measurement on it, doesn't mean it
> >isn't 19".
>
> I think his point is that (usually) none of the actual dimensions on a
> 19" rack are actually 19 inches.
They are, with specific tolerance to make sure the equipment fits
neatly between the rails and math the specified height increment. Relay
racks have been around for over 100 years.
--
Anyone wanting to run for any political office in the US should have to
have a DD214, and a honorable discharge.
Reply by Robert Wessel●October 9, 20142014-10-09
On Thu, 09 Oct 2014 17:31:45 -0400, "Michael A. Terrell"
<mike.terrell@earthlink.net> wrote:
>
>Stefan Reuther wrote:
>>
>> Michael A. Terrell wrote:
>>
>> > None of your electronics is 19" rackmount?
>>
>> That's the same trick they used for floppies: "19-inch rack" is a type
>> specification, not a size, much like "3-1/2 inch floppy" is a type
>> specification for a magnetic disc within a 89mm plastic case.
>
> Not a size? So you can shove anything you want, into a 19" relay
>rack? Just because you tack a metric measurement on it, doesn't mean it
>isn't 19".
I think his point is that (usually) none of the actual dimensions on a
19" rack are actually 19 inches.
Reply by Michael A. Terrell●October 9, 20142014-10-09
Stefan Reuther wrote:
>
> Michael A. Terrell wrote:
>
> > None of your electronics is 19" rackmount?
>
> That's the same trick they used for floppies: "19-inch rack" is a type
> specification, not a size, much like "3-1/2 inch floppy" is a type
> specification for a magnetic disc within a 89mm plastic case.
Not a size? So you can shove anything you want, into a 19" relay
rack? Just because you tack a metric measurement on it, doesn't mean it
isn't 19".
--
Anyone wanting to run for any political office in the US should have to
have a DD214, and a honorable discharge.