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. . . JO.Skip Robinson Southern California Edison Company SHARE MVS Program Co-Manager 626-302-7535 Office 323-715-0595 Mobile [EMAIL PROTECTED] "R.S." <[EMAIL PROTECTED]> Sent by: IBM Mainframe Discussion List <[email protected]> 02/01/2007 12:45 PM Please respond to IBM Mainframe Discussion List <[email protected]> To [email protected] cc Subject Cascaded FICON and HCD The following scenario: 3 CPCs connected FICON switch (12 chpids per CPC), the switch is connected to another switch on remote site (only 6 FICON ports), several tape drive CUs (12 chpids total) connected to the remote switch. Drawing: 3CPC--SWCH1-----SWCH2--TAPE Number of links between switches cannot be increased. I need to access whole 12 drives from every CPC. In the times of ESCON directors it was simply impossible , since one of the "hops" had to be static. AFAIK in FICON world both switches can be dynamic. Can I put those 36 paths (12 from CU to each of 3 CPCs) to 6 links between the sites ? Im' aware I of bandwith reduction possibility. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
