HP XP P9500 Storage - Manual (Page 127)

For more information, see “Inter-disk controller logical paths” (page 114) .
To establish a logical path of either type:
1.
Verify the port number for the port to which the cable is connected.
NOTE: It is a good practice to verify the port number at both ends of the connection.
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 “Acquiring
path information from a storage system” (page 128) .
2. Define a path set by creating a path set definition file from the ISPF panels. The procedures
for these are available in
“Creating a path set” (page 595) :
•
For an inter-control unit logical path: See in “Using the ISPF panels” (page 588) .
•
For an inter-disk controller logical path: See “Defining the inter-DKC logical path set”
(page 595) .
3. Load and establish a path set:
From the ISPF panels: see in “Using the ISPF panels” (page 588) .
Using CLI commands:
1. Load the path set definition file by executing the YKLOAD command with the PATH
parameter specified.
2. Establish a logical path by executing the YKBLDPTH command.
For more information, see “The Logical Path Control function” (page 112) .
Establishing an inter-control unit logical path
Establish an inter control-unit logical path for the following control units:
•
The control unit containing the copy group
•
The control unit containing the command device
NOTE: You can define a logical path in one direction even if there is no disk configuration
definition file at the destination site (although there must be one at the source site).
You can establish inter-disk controller logical paths when the storage systems contain Non Gen'ed
volumes or inter-control unit logical paths. However, when establishing, deleting or acquiring the
status of an inter-control unit logical path, if all volumes in the relevant control unit are Non Gen'ed
volumes, you need to set up a route list and register a command device beforehand.
For details about creating an inter-control unit logical path that is dedicated to the command device,
see
“Creating an inter-control unit logical path dedicated to the command device ” (page 137) .
Creating a logical path 127