HP XP7 Storage - Manual (Page 17)

The following table shows the conditions when the F/M=FB message is output (Yes) or stopped
(No).
Settings Cause of P-VOL split
SOM 776 = OFF SOM 776 = ON
PPRC support by host
= No PPRC support by host
= Yes PPRC support by host
= No PPRC support by host
= Yes
No Yes No No Suspended by split or
release operation from
BCM to S-VOLs
No Yes No Yes Suspended by failure
PPRC specifications, restrictions
Most Continuous Access Synchronous Z operations can be performed using PPRC TSO or ICKDSF
PPRCOPY commands from the host system console. All P9500 storage systems support IBM PPRC
host software functions.
Continuous Access Synchronous Z operations performed with PPRC
You can perform the following operations using PPRC:
•
Create, split, resynchronize, and delete Continuous Access Synchronous Z pairs.
•
Split, resynchronize, and delete Continuous Access Synchronous Z consistency groups.
•
Establish and delete remote paths.
•
View path and pair status.
The following applies when using PPRC commands:
•
The P9500 is capable of automatically configuring a Fibre Channel port as an initiator or
RCU target port, if required, in response to the TSO CESTPATH and CDELPATH commands.
Initiator and RCU target ports are required for sending and receiving data to and from the
primary and secondary system. System option mode 114 must be enabled for automatic port
configuration in response to PPRC commands.
The P9500 makes sure that the specified primary system port is offline to the host, and
automatically configures it as an initiator port if required. Similarly, the corresponding
secondary system port is configured as an RCU target port when required.
When the CDELPATH command is issued, Continuous Access Synchronous Z remote paths
are removed. If there are no more Continuous Access Synchronous Z remote paths on the
port, the port is automatically changed from initiator port to RCU target port.
•
Concerning the Fibre Channel interface, do not use the CESTPATH and CDELPATH commands
when using LUN Manager’s SCSI path definition function. Fibre Channel ports must be
configured as initiator or RCU target ports before the CESTPATH and CDELPATH commands
are issued.
NOTE: Ensure that the relevant paths are offline before issuing the CESTPATH command.
The add path operation fails if active remote paths exist, because the port attribute cannot be
changed.
Continuous Access Synchronous Z options not supported with PPRC
The following Continuous Access Synchronous Z options cannot be changed using PPRC. Use
Remote Web Console to change these options:
PPRC specifications, restrictions 17