HP XP P9000 Continuous Access Synchronous for Mainframe Systems User Guide

The XP P9500 option modes are set to their default values at installation, and can be changed
only by your HP representative.
DescriptionOption mode
S-VOL read-only function (RCU only).20
Selects function of CRIT=Y(ALL) or CRIT=Y(PATHS):36
• Mode 36 ON: CRIT=Y(ALL) => equivalent to Fence Level = Data.
• Mode 36 OFF: CRIT=Y(PATHS) => equivalent to Fence Level = Status.
Allows you to change the volume that is suspended when the FREEZE command is issued from the
host. The target will change from the volume in the CU for which the FREEZE command is issued to
the volume in the entire DKC if this mode is ON:
64
• Mode 64 ON: The volume in the entire DKC is suspended.
• Mode 64 OFF: The volume in the CU for which the FREEZE command is issued is suspended.
Allows dynamic port mode setting (Initiator/RCU target for Fibre Channel) through PPRC CESTPATH
and CDELPATH commands:
114
• Mode 114 ON: Initiator ports automatically change to RCU target ports, or vice versa.
• Mode 114 OFF (default): Initiator ports do not change to RCU target ports, or vice versa.
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. Fibre Channel interface ports need to be
configured as initiator ports or RCU target ports before the CESTPATH and CDELPATH commands
are issued.
When the CU emulation type is 2105 or 2107, allows you to select whether the Remote Copy Path
status, SIM218x, is reported to the host or not:
308
• Mode 308 ON: SIM218x will be reported to the host.
• Mode 308 OFF: SIM218x will not be reported to the host.
Allows you to select the indication type if you use the PPRC CQUERY command to display the remote
copy path status:
484
• Mode 484 ON: The status of path using the Fibre Channel interface is displayed. WWNN is
indicated.
• Mode 484 OFF: The status of path using an ESCON® interface is displayed. WWNN is invalid.
If a previous model storage system or an XP12000 Disk Array/XP10000 Disk Array microcode
version 50-05-xx-xx or earlier is connected, mode 484 must be OFF.
Allows you to slow the initial copy operation when the write-pending level to the S-VOL is 60% or
higher.
689
• Mode 689 ON: When the S-VOL MP blade WritePending is 60% or higher, the initial copy
operation is inhibited.
• Mode 689 OFF: Though the S-VOL MP blade WritePending is 60% or higher, the initial copy
operation is not inhibited.
Do not set this mode if the local storage system is connected to XP12000 Disk Array, XP10000 Disk
Array, or earlier models, or to XP24000/XP20000 Disk Array with microcode earlier than
60-02-xx-xx/xx; otherwise, Cnt Ac-S Z pairs may suspend.
Used when the basic HyperSwap function of TPC-R is used. The TPC-R Basic HyperSwap function
may allow the CESTPATH operation to establish a path to several RCUs at the same time. Because
769
attributes of a port are switched if the CESTPATH operation is performed with system option mode
144 ON, the path status between the main and remote system is changed to linkdown. If the
CESTPATH operation is performed to two or more RCUs at the same time, MIH may be reported to
a host as the other CESTPATH operation, which has detected the linkdown path, retries the CESTPATH
operation. To disable an MIH report to a host, set this system option mode to ON to disable the
CESTPATH to retry the operation when a linkdown is detected.
• Mode 769 ON: Does not retry when linkdown is detected during CESTPATH operation.
• Mode 769 OFF: Retries when linkdown is detected during CESTPATH operation.
30 Planning for Continuous Access Synchronous Z