Establishing A Logical Path - HP XP P9500 Software User's Manual

You can group one or more inter-control unit logical paths and/or inter-disk controller logical paths
in a defined path set.
Definable units of a path set can be selected as required for operations and scripts. To avoid
performance problems, separate the paths between command devices from those used for copy
groups.
For the procedure for creating a path set definition file from the ISPF panels, see
set" (page 439).
Valid approaches to definable units include the following:
Define logical paths for all storage systems in one path set
Define logical paths established from a storage system in one path set
Define logical paths used by a copy group in one path set
Create separate path sets for each path
To avoid performance problems, separate the paths between command devices from the paths
used for copy groups
For the procedure for creating a path set definition file from the ISPF panels, see
set" (page 439).

Establishing a logical path

To establish, operate on, or status-check an inter-disk controller logical path from Business Continuity
Manager (using the logical path control function), you must define a path set and establish a logical
path.
The type of the logical path you establish is determined by the copy type:
Inter-control unit logical path: Enables Continuous Access Synchronous for Mainframe or
Continuous Access Asynchronous for Mainframe remote copy communication between the
P-VOL on the Main Control Unit and the S-VOL on the Remote Control Unit.
For more information, see
Inter-disk controller logical path: Enables Continuous Access Journal for Mainframe
communication between a journal volume on the primary storage system, and a journal volume
on the secondary storage system.
A path set can contain storage systems that belong to different Device Address Domains (DAD).
For more information, see
To establish a logical path of either type:
1. Verify the port number for the port to which the cable is connected.
NOTE:
You can determine the port number to which the cable is connected using one of these methods:
Use a hexadecimal number to specify the last 2 digits of the system adapter ID (SAID).
For details about the correspondence between the port number in the
CL-cluster-number-alphabetic-character format and the SAID, see the Continuous Access
Synchronous for Mainframe Systems User Guide and the Continuous Access Journal for
Mainframe Systems User Guide.
Acquire port number information from the storage system. For details, see
path information from a storage system" (page
1 12 Preparing to use Business Continuity Manager
"Inter-Control Unit Logical Paths" (page
"Inter-Disk Controller Logical Paths" (page
It is a good practice to verify the port number at both ends of the connection.
96).
97).
113).
"Creating a path
"Creating a path
"Acquiring