Hitachi Universal Replicator (TM) for Mainframe User Guide: HP XP24000 Disk Array, HP XP20000 Disk Array (T5278-96044, May 2011)

NOTE: When there is insufficient space in the cache, journal data will also be stored
into the journal volume.
◦ Not Use: Journal data will not be stored into the cache.
CAUTION: This setting does not take effect on master journal groups. However, if the Business
Continuity Manager YKRESYNC REVERSE command is used to change a master journal group
into a restore journal group, this setting will take effect on the journal group. If you set Use,
this setting only takes effect on the journal volumes of RAID-5 or RAID-6 that are in the journal
group. For external volumes, non-RAID-5 journal volumes, and non-RAID-6 journal volumes,
Use works the same as Not Use.
• Delta resync Failure: Indicates the processing that will take place when the delta resync
operations are initiated but cannot be performed.
◦ Entire: Whole data in the primary data volume will be copied to the secondary data
volume when the delta resync operation cannot be performed.
◦ None: No processing will take place when the delta resync operation cannot be
performed. Therefore, the secondary data volume will not be updated.
• Speed of Line: Indicates the line speed of data transfer. The unit is Mbps (megabits per second).
One of the following settings is displayed: 256, 100, or 10.
The recommended setting values are as follows:
◦ 10 is recommended if the line speed is from 10 Mbps to 99 Mbps.
◦ 100 is recommended if the line speed is from 100 Mbps to 255 Mbps.
◦ 256 is recommended if the line speed is 256 Mbps and more.
CAUTION: This setting does not take effect on master journal groups. However, if the Business
Continuity Manager YKRESYNC REVERSE command is used to change a master journal group
into a restore journal group, this setting will take effect on the journal group.
• Timer Type: Indicates the type of clock used for the consistency time.
System: The system clock of the mainframe host is used.◦
◦ Local: The system clock is not used.
◦ None: The system clock of the mainframe host is used. The difference between System
and None is explained in “Timer Type Option” (page 28).
• EXCTG, DKC/CTRLID: Displays the following information sequentially if the journal group
belongs to an extended consistency group:
◦ The extended consistency group number
◦ The serial number and the LDKC number (the LDKC number is enclosed in parentheses)
◦ A slash (/), the controller ID
This column is blank if the journal group does not belong to any extended consistency group.
• JNL Volumes: Displays a list of registered journal volumes.
Parity Group: Indicates the parity group where a journal volume belongs.◦
◦ LDKC:CU:LDEV: Indicates the LDKC number, the CU number and the LDEV number of a
journal volume.
◦ Capacity: Indicates the capacity of a journal volume. The unit is cylinders if the volume
is a mainframe volume. The unit is gigabytes if the volume is an open-systems volume.
172 Configuring Journal Groups