HP StorageWorks XP Remote Web Console Software - Manual (Page 82)

Table 22 Host Pair Status Reporting for URz/SIz Shared Volumes
Number
of URz
pairs
Number of
SIz T-VOLs
Pair status reported by XP disk array
0 0 Simplex
0 1 SIz pair status
0 2 or more SIz pair status for the pair whose S-VOL has the lowest LDEV ID
1 0 URz pair status
1 1 URz pair status
1 2 or more URz pair status
Table 23 Data Currency of a Shared URz/SIz Volume
SIz pair status
URz pair
status
Pending
Duplex
Duplex Split-
Pending
Split Resync Sus­
pended
Pending
Duplex
Not current Not current Not current CURRENT Not current Not
current
Duplex Not current Not current Not current CURRENT Not current Not
current
Suspended Not current CURRENT CURRENT CURRENT CURRENT Not
current
Figure 21 on page 82 through Figure 24 on page 84 show the various URz/SIz configurations which
share volumes.
• URz/SIz configurations which share the URz primary data volume and SIz S-VOL
Figure 21 on page 82 shows an example of a URz primary data volume which is also functioning as
a SIz S-VOL. This configuration allows you to use SIz for on-site data backup in case of a URz failure,
and to use URz to provide remote backup of the SIz S-VOL in case of a SIz failure.
URz
SIz
Primary
data
volume
S-VOL
MCU
RCU
Secondary
data volume
Master journal
volume Restore journal
volume
T-VOL
Figure 21 Shared URz Primary Data Volume and SIz S-VOL
Business Continuity Manager allows you to set the starting time of backup copy to journal groups. In the
above configuration, if you set the starting time of backup copy, the writes to the primary data volume
up to that time will be backed up to the secondary data volume. If the above configuration is used in
multiple journal volumes in multiple storage subsystems, you can set the same starting time of backup
copy to all the journal groups. If you do this operation, the primary data volumes will be backed up
across the multiple storage subsystems at the same time.
• URz/SIz configurations which share the URz secondary data volume and SIz P-VOL
82 Preparing for Universal Replicator z/OS Operations