Don wrote.....
I currently work for a big datacom supplier, and
design a lot of rack
mount equipment. The current major datacom/telecom customers invariably
want all equipment to fit in standard 19" two or four post racks. They
really don't like the 23" width (not 24" width) at all, and really balk at
buying a chassis that requires a 23" rack.
Datacom != Telecom
The folks you are seeing that balk at the 24" racks must be more datacom
than telecom. Most telecom stuff is 24" rack mount form factor. As I said,
there is SOME crossover, because some computer companies put their gear in
24" racks, someone pointed out IBM for example, and nowdays telecom centers
generally have a lot of datacom gear too. But the general common standard is
19" for computer stuff and 24" for telco stuff. And most telcom stuff comes
with it's own racks, so working at a supplier you're less likely to see it.
More interesting is the concept of 'U' when it
comes to racks. All
equipment is in units of 'U' (a standard 8' rack is 44U), which is
1.75".
So anyone know where 'U' came from, and why it is called 'U'?
Where
on earth did you come up with a standard rack being 8"? Definitely
not. As to U'units, other than it is a TIA/EIA standard, no clue.
Jay