HP XP P9500 Storage - Manual (Page 86)

A Using PPRC commands for Continuous Access
Synchronous Z
This appendix describes how to use PPRC commands to perform Continuous Access Synchronous
Z operations.
Overview of PPRC commands
The P9500 supports IBM Peer to Peer Remote Copy (PPRC) TSO and ICKDSF commands to enable
you to perform Continuous Access Synchronous Z operations from the zSeries and S/390 host
system. PPRC TSO commands are issued from the system console to the M-VOL or R-VOL of a
Continuous Access Synchronous Z pair. PPRCOPY ICKDSF commands are issued from JCL job
cards. The Continuous Access Synchronous Z feature must be installed on the P9500, and IBM
PPRC must be installed on the host operating system.
You cannot change the RCU options, initial copy priority, or the DFW to R-VOL pair options using
PPRC commands.
Port configuration (RCU target <-> initiator) is supported using the CESTPATH and CDELPATH TSO
commands only when system option mode 114 ON (see
Table 11 (page 26) ). If system option
mode 114 is OFF, you must configure the ports using the licensed Continuous Access Synchronous
Z software on the Remote Web Console computer before adding paths and after deleting paths.
Even if you set ON for system option mode 114, initiator ports will not automatically change to
RCU target ports, nor vice versa, when these ports are in initiator/external mix mode.
Table 37 (page 86) lists the Continuous Access Synchronous Z operations and describes the
corresponding PPRC TSO and ICKDSF commands.
Table 37 Continuous Access Synchronous Z operations versus PPRC TSO and ICKDSF commands
Description Command
nl
ICKDSF
nl
TSO
nl
Continuous
nl issued to: command command Access
nl Synchronous Z
nl operation
If system option mode 114 is OFF, the ports
must be configured using the Continuous — — — Configure Port
(RCU target to
initiator)
Access Synchronous Z. If system option mode
114 is ON, the ports are configured
automatically (RCU target/initiator to
initiator/RCU target) in response to the
CESTPATH and CDELPATH TSO commands.
However, even if you set ON for system option
mode 114, initiator ports will not automatically
change to RCU target ports, or vice versa,
when these ports are in initiator/external mix
mode.
For Fibre Channel interface, do not use the
CESTPATH and CDELPATH commands at the
same time as the SCSI path definition function
of LUN Manager. The Fibre Channel interface
ports need to be configured as initiator ports
or RCU target ports before the CESTPATH and
CDELPATH commands are issued.
Establishes logical paths from an MCU to an
RCU. The default RCU options are used. MCU PPRCOPY
nl ESTPATH
CESTPATH Add RCU
Deletes all active paths between an MCU and
an RCU. M-VOL PPRCOPY
nl DELPATH
CDELPATH Delete RCU
Displays the status of all paths for the CU
specified by the DEVN parameter. Continuous M-VOL PPRCOPY
QUERY/
nl
CQUERY/ PATHS RCU Status
86 Using PPRC commands for Continuous Access Synchronous Z