HP P9000 Continuous Access Synchronous for Mainframe Systems User Guide (AV400-96398, October 2011)

5 Configuration operations
This chapter provides instructions and information for setting up a Continuous Access Synchronous
Z system that is ready for pair operations.
Configuration workflow
Configuration tasks consist of the following:
• Check prerequisites for each procedure.
• In the production system, identify the production volume or volumes that will become Continuous
Access Synchronous Z M-VOLs. In the remote backup system, create the volumes that will
become the R-VOLs. For information on pair volume requirements, see “Planning volume pairs”
(page 29).
• On the main and remote system, install the data paths. For more information, see “Planning
data paths” (page 34).
• On main and remote system, configure the Fibre Channel ports that will be used for Continuous
Access Synchronous Z operations. Configure initiator and RCU target ports. Review “Planning
ports” (page 37), and then see “Define port attributes” (page 45) for details.
• On the main system, create the Continuous Access Synchronous Z association with the remote
system where your R-VOL(s) will be located. See “Configure disk arrays and define logical
paths” (page 46). Logical paths between the systems are added during this procedure.
You may also perform these additional procedures prior to the initial copy:
• Add additional logical paths. See “Configure additional logical paths” (page 51).
• Specify the number of volumes to copy at one time. See “Set number of volumes to be copied
concurrently, path watch time” (page 52).
Define port attributes
Initiator and RCU target ports must be set up on the main and remote system for Continuous Access
Synchronous Z command and data transfer.
Prerequisite information
Before configuring ports, make sure they are ready to have a new attribute assigned, as follows:
• If you are changing a target port to an initiator port, prepare the port for the change as follows:
Disconnect the port from the host.◦
◦ Release affected pairs.
◦ Delete all logical paths.
◦ Remove all channel paths to the port.
• If you are changing an initiator port to target or RCU target port, prepare the port for the
change as follows:
◦ Release affected pairs.
◦ Delete the paths from the initiator port to the remote storage system.
◦ Delete the RCU.
The number of hosts connected to a target port must be limited to 128 or fewer to avoid
disconnection. See “Planning ports” (page 37) for information on target, initiator, and RCU target
ports.
Configuration workflow 45