> -----Original Message-----
> From: IBM Mainframe Discussion List On Behalf Of Rick Fochtman
> 
> ----------------------------<snip>---------------------------
> The short answer is Yes, you can do it. FICON is so fast that 
> you should not have trouble with 12 drives--assuming that 
> distance is not a problem. I don't know what the native 
> limitations are, but we use DWDM to 120 KM.
> 
> Actually in the 'olden days' of ESCON, channel extender 
> products provided a similar capability, but the pathing was 
> not known to MVS. 
> FICON lets it all hang out.
> --------------------------<unsnip>--------------------------
> Pardon me; my education is lacking.
> 
> DWDM ?? "Dark fiber" ??

DWDM:  Short for Dense Wavelength Division Multiplexing, an optical
technology used to increase bandwidth over existing fiber optic
backbones. 

http://www.webopedia.com/TERM/D/DWDM.html

Dark fiber refers to unused fiber-optic cable. Often times companies lay
more lines than what's needed in order to curb costs of having to do it
again and again. The dark strands can be leased to individuals or other
companies who want to establish optical connections among their own
locations.

http://www.webopedia.com/TERM/d/dark_fiber.html

    -jc-

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