HP XP P9000 for Business Continuity Manager Software User Guide (T5253-96081, July 2013)

• When Continuous Access Journal Z is linked with Compatible FlashCopy, the following functions
might not operate correctly because the timestamp information assigned to the I/O is not
inherited:
◦ Consistency Preservation Function in a 4x4 configuration
◦ Cnt Ac-J Z ATTIME suspend function
• Table 15 (page 68) lists Continuous Access Synchronous Z copy group attributes which can
be set when using the Preserve Mirror function.
Table 15 Continuous Access Synchronous Z copy group attributes that can be set when using
the Preserve Mirror function
DescriptionPossibility of the settingItems displayed on the Copy Group
Attributes panel
Specifies the specification of
consistency group IDs.
NC/T ID
Specifies how to handle the P-VOL
after suspension (fence level).
YFENCE LVL
Specifies whether to freeze the
storage system when a failure
suspension (SUSPER) occurs.
YFREEZE SCP
Specifies whether to forward the
writing timestamp to the S-VOL
(timestamp transfer mode).
YTIMESTAMP
Specifies the differential-data
management unit.
Can be set to only TRK.DIF UNIT
Specifies whether to use the
Open/MF Consistency Preservation
function.
NOPEN/MF
Legend: Y: Can be set; N: Cannot be set
• Configurations cannot be created in which Continuous Access Synchronous Z copy pairs that
use the Preserve Mirror function are combined with other copy pairs.
Sample replication product combinations
Different replication products can be used concurrently for the same volume. Figure 30 (page 68)
through Figure 34 (page 69) give examples of basic replication product combinations.
Figure 30 3DC Cascade (Cnt Ac-S Z x Cnt Ac-J Z) configuration
68 Business Continuity Manager with replication products