Visara CCA-3074 Planning Guide - Manual (Page 45)

CCA-3074 Planning
707159-002 4-1
Chapter 4. IOCDS Sample Definitions
Following are some example IOCDS definitions. Detailed
examples of the corresponding HCD panels are not practical, due
to the large number of panels required to create one of these
definitions. Refer to the sample HCD panels in Chapter 3, and to
the parameter cross reference chart in Chapter 2, to aid in
determining what to define in the HCD panels.
Here are some of the key parameters used in the definitions for
the CCA-3074, and what their purpose is.
CHPID
• PATH=number identifies which host ESCON/FICON
connection is used
• TYPE=CNC required for ESCON
• TYPE=FC required for FICON
• SWITCH=number identifies an ESCON/FICON Director as
being in the channel path
CNTLUNIT -
• LINK=number identifies the ESCON/FICON Director port
that the controller is attached to
• PATH argument allows association of the PATH to the LINK
• UNIT=3174 for ESCON definitions
• UNIT=NOCHECK for FICON definitions
IODEVICE - Basically the same as for Bus and Tag with
addition of the following:
• PARTITION identifies which partition the definition is
assigned to. Note that if no PARTITION parameter is
specified, then the IODEVICE statement applies to all
partitions sharing the CHPID (and the CNTLUNIT macro also
applies to each). When this is the situation, the single set of
statements is actually defining a CU in each of the LPARs
with identical addressing. The CCA-3074 in turn, must have a
separate CU defined to each of the LPARS sharing the path,
and a separate set of definitions for the device sessions, etc.