HP XP7 Storage - Manual (Page 30)

Description Option mode
Allows dynamic port mode setting (Initiator/RCU target for Fibre Channel) through PPRC CESTPATH
and CDELPATH commands: 114
• ON: Initiator ports automatically change to RCU target ports, or vice versa.
•
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.
Allows you to specify whether the Remote Copy Path status, SIM218x, is reported to the host or not. 308
•
ON: SIM218x will be reported to the host.
• 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
•
ON: The status of path using the Fibre Channel interface displays. WWNN is indicated.
•
OFF: The status of path using an ESCON® interface displays. WWNN is invalid.
If a previous model storage system 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
• ON: When the S-VOL MP blade WritePending is 60% or higher, the initial copy operation is
inhibited.
•
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 primary storage system is connected to XP24000/XP20000 Disk Array
with microcode earlier than 60-02-xx-xx/xx; otherwise Continuous Access Synchronous Z pairs may
split.
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 primary and secondary 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.
•
ON: Does not retry when linkdown is detected during CESTPATH operation.
•
OFF: Retries when linkdown is detected during CESTPATH operation.
Allows you to select whether to output the F/M = FB message to the host of MCU when the split or
the release operation is performed from Business Continuity Manager to the S-VOL of a Continuous
Access Synchronous Z pair in Duplex status: 776
•
ON: The F/M = FB message is not output.
• OFF: The F/M = FB message is output.
This mode must be set to both MCU and RCU.
Allows you to reduce RIO MIH time to 5-seconds. As a result, after a remote path error, less time
elapses until the operation is retried on an alternate path. (Both RIO MIH time and the Abort Sequence
timeout value are combined for this retry time.) 784
•
ON: Reduces the RIO MIH time to 5-seconds.
Combined with the Abort Sequence timeout value, the total amount of time that elapses before
the operation is retried on another path is a maximum of 10-seconds.
•
OFF: The RIO MIH time that you specified at RCU registration (default=15 seconds) is used with
the specified Abort Sequence timeout value.
30 Planning for Continuous Access Synchronous Z