HP StorageWorks XP Disk Array Mainframe Host Attachment and Operations Guide XP24000, XP20000 (A5951 - 96151, September 2007)

Figure 25 Native FICON Configuration
Registered state-change notifications (RSCNs) on zSeries hosts
McDATA and CNT switches ship without any configured zoning. This unzoned configuration enables
the default zone on some McDATA switches. This configuration enables all ports in the switch with a
Fibre Channel connection to communicate with each other and to receive registered state change
notifications about each other. You can set the zones.
Here are some recommendations:
• If you have FICON-only environments, do not disable the default zone.
• If you have FICON environments and plan to add (or already have) Fibre Channel intermix on
the switch, ensure that all FICON host adapters and all FICON-capable device ports are in an
explicitly defined common zone.
• If you have open-systems traffic with Fibre Channel Protocol, continue to create zones that include
the host ports and all storage ports. Multiple overlapping zones should be used in this case to
support communication from multiple host ports to share device ports.
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