HP XP7 Owner Guide (H6F56-96006)

Table 11 System option modes (continued)
MCU/RCUDefaultDescriptionCategoryMode
The data is settled to RCU according to the time stamp that RCU
has received.
Notes:
1. This mode is applied under the following conditions.
(1)Continuous Access Journal Z.
(2) EXCTG configuration.
(3) Flush suspension with an EXCTG specified is executed.
(4) BCM is installed on the host where the time stamping function
is available.
(In the case of multiple-host configuration, SYSPLEX timer is
available on the system)
2. If this mode is set to ON while the BCM does not exist in the
environment where the time stamping function is available (In the
case of multiple-host configuration, SYSPLEX timer is available on
the system), the pair status may not become Suspend after Flush
suspension for an EXCTG.
3. Do not set this mode to ON if the BCM does not exist in the
environment where the time stamping function is available (In the
case of multiple-host configuration, SYSPLEX timer is available on
the system).
MCU and RCUOFFThis mode controls whether the retry operation is executed or not
when a path creation operation is executed.
Continuous Access
Synchronous
769
(The function applies to both of CU FREE path and CU single path
for Open and Mainframe).
Continuous Access
Synchronous Z
Mode 769 = ON:Continuous Access
Journal
The retry operation is disabled when the path creation operation
is executed (retry operation is not executed).Continuous Access
Journal Z
Mode 769 = OFF (default):
The retry operation is enabled when the path creation operation
is executed (retry operation is executed).
Notes:
1. This mode is applied when the three conditions below are
met:
• SOM 114 is set to OFF (operation of automatically
switching the port is disabled).
• HMO 49 and HMO 50 are set to OFF (70-02-31-00/00
and higher).
• TPC-R is used (it is not applied in normal operation).
2. When SOM 769 is set to ON, SOM 114, HMO 49 and HMO
50 must not be set to ON.
3. In either of the following cases, the path creating operation
may fail after automatic port switching is executed.
• SOM 114 is set to ON.
• HMO 49 and HMO 50 are set to ON.
.OFFThis mode enables/disables to output the F/M=FB message to
the host when the status of P-VOL changes to Suspend during a
TC/TCA S-VOL pair suspend or deletion operation from BCM.
Continuous Access
Synchronous Z,
Business Continuity
Manager
776
Mode 776 = ON:
When the status of P-VOL changes to Suspend during a TC/TCA
S-VOL pair suspend or deletion operation from BCM, the F/M=FB
message is not output to the host.
System option modes, host modes, and host mode options 47