HP StorageWorks XP Remote Web Console Software - Manual (Page 46)

Table 11 (page 46) lists the volumes and the volume capacity that can be used for the XP Continuous
Access Journal data volume and journal volume. Remember that the capacity of journal volume is
not included in the accounting capacity.
Table 11 Supported Data Volumes and Journal Volumes
Support Specifications Type
Journal Volume Data Volume
Available CVS volume
Unavailable Available The volume that is set for Cache
Residency Manager
The maximum capacity of a volume for each emulation type Maximum volume capacity
The minimum capacity for a CVS
volume. A journal group consists of The minimum capacity for a CVS
volume Minimum volume capacity
areas containing journal data and
an area containing metadata for the
remote copy
Note: Specify a port in SLPR 0 when you use 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 you define an
LU path. For detailed information about SLPR 0, see the HP StorageWorks XP24000/XP20000
Disk/Cache Partition User Guide.
Table 12 (page 46) below explains the emulation types and the capacity of volumes that can form
pairs. For details on the maximum number of pairs, see “Maximum Number of Pairs” (page 47) .
Table 12 Specifications for Volumes That Can Form Pairs
Support Specifications Item
Same type of pair can be created for OPEN-V Emulation type
Same capacity Volume capacity
XP Continuous Access Journal supports the LUN Expansion (LUSE) feature, which allows you to
configure a LUSE volume by using 2 to 36 sequential LDEVs. If two LUSE volumes are assigned to
an XP Continuous Access Journal pair, 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, and 3 GB volumes are combined in this order, the secondary
data volume must be a LUSE volume in which 1 GB, 2 GB, and 3 GB volumes are combined in
this order. In addition, RAID1, RAID5, and RAID6 can coexist in the LUSE volume.
XP Continuous Access Journal also supports the Virtual LVI/LUN (CVS) feature, which allows you
to configure custom-size LUs that are smaller than standard-size LUs. When custom-size LUs are
assigned to an XP Continuous Access Journal pair, the secondary data volume must have the same
capacity as the primary data volume. The emulation types and capacities of the master and restore
journal volumes that can be used for an XP Continuous Access Journal software are shown in
Table 13 (page 46) .
Table 13 Journal Volume Specifications
Support Specifications Item
Same Emulation type
Note: Only OPEN-V can be used for journal volumes.
Same or different amount of capacity is available Volume capacity
Table 14 (page 47) shows the RAID level combination of data volume and journal volume in the
journal group that can be used for XP Continuous Access Journal.
46 Preparing for XP Continuous Access Journal Operations