HP XP Continuous Access Software - Manual (Page 49)

Table 10 lists the volumes and volume capacities that can be used for Continuous Access XP Journal data
and journal volumes.
NOTE:
The capacity of a journal volume is not included in the accounting capacity.
Table 10 Supported data and journal volumes
Support specifications Type
Data volume Journal volume
Custom Volume Size volume Available
Cache LUN XP volume Available
Maximum volume capacity Maximum capacity of volume for each emulation type
Minimum volume capacity Minimum capacity of a Custom
Volume Size volume.
Minimum capacity of a Custom
Volume Size volume.
NOTE:
A journal groups consists
of areas containing journal
data and an area containing
metadata for remote copy.
NOTE:
•
Specify a port in SLPR 0 when using LUN Manager to define an LU path to a data volume. It is
possible, but not recommended, that you specify a port in another SLPR when defining an LU path.
For more information about SLPR 0, see the HP StorageWorks XP Disk/Cache Partition user guide .
• Volumes containing a volume management area (VMA) cannot be used as journal volumes. For
more information about VMA, see the HP StorageWorks LUN Security XP Extension user guide .
Table 11 lists emulation types and capacities of logical volumes that can form pairs. For more information,
see Maximum number of pairs .
Table 11 Specifications for logical volumes that can form pairs
Item Support specification
Emulation type Same type of pair can be created for OPEN-V
Volume capacity Same capacity
Continuous Access XP Journal supports the LUN Expansion (LUSE) feature, which allows you to configure
a LUSE volume pvol by using 2 to 36 sequential LDEVs. If the pvol and svol of a pair are both LUSE,
the capacity and configuration of the secondary data volume must be the same as the primary data
volume. For example, when the primary data volume is a LUSE volume in which 1-GB, 2-GB, 3-GB
volumes are combined in this order, the secondary data volume must be a LUSE volume in which 1-GB,
2-GB, 3-GB volumes are combined in this order. In addition, RAID1, RAID5, and RAID6 can coexist in
the LUSE volume.
Continuous Access XP Journal also supports LUN Volume Manager on the local array, which allows
you to configure custom-size LUs that are smaller than standard-size LUs. When assigning custom-size
LUs to a Continuous Access XP Journal pair, the secondary data volume must have the same capacity
as the primary data volume.
Table 12 lists the emulation types and capacities of the master and restore journal volumes that can be
used for Continuous Access XP Journal.
Continuous Access XP Journal user guide 49