Filter
Top Products
Chapter 6 Configuring Journal Groups 6-13
Hitachi Universal Replicator for IBM /OS User’s Guide
– By default, the pace for an initial copy activity is Low.
– Copy Pace displays nothing if the journal group is a restore journal
group.
• Use of Cache: Indicates whether to store journal data in the restore
journal group into the cache.
– Use: Journal data will be stored into the cache.
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 would take place
when delta resync operation cannot be performed.
– Entire: Whole data in primary data volume will be copied to secondary
data volume when delta resync operation cannot be performed.
– None: No processing will take place when 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 is displayed: 256, 100, or 10.
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 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 section
Timer Type Option.
• 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
by parentheses)