HP StorageWorks XP24000 Continuous Access Journal Software User and Reference Guide, v01 (T5278-96001, June 2007)

Note: The capacity of a journal volume is not included in the accounting capacity.
Table 10 Suppor ted D ata Volume and Journal Volume
Type
Support Specifications
Data Volume Journal Volume
VLL volume Available
Thevolumethatis set using
Cache Residency Manager
Available
Maximum volume capacity
The maximum capacity of a volume for each emulation type.
Minimum volume capacity
The minimum capa city for a VLL
volume.
The minimum capa city for a VLL
volume.
Note: A journal group consists of
areas containing journal data and
an area containing metadata for
the
remote copy.
Notes:
• Specify a port in SLPR 0 when you use LUN Manager to d efine 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 StorageWor
ks XP24000 Disk/Cache
Partition User’s Guide.
The table 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”onpa
ge 44.
Table 11 Specificationsfor Volumesthatcan Form Pairs
Item
Support Specifications
Emulation type
Same type of pair can be created for OPEN-V.
Volume capacity
Same capacity
Continuous Access Journal supports the LUN Expansion (LUSE) feature of the storage system, which allows
you to configure aLUSEvolumebyusing 2to36sequential LDEVs. If two LUSE volumesare assigned to
a
Continuous Acc ess Jou rnal p a ir, the capacity and configuration of the seco ndary 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 G B, 2 GB, a nd 3 GB volumes are combined in this order. In addition, R A ID1,
RAID 5, an d R AI D6 can c oexist in the LUSE volume.
Continuous Access Journal also supports the Virtual LVI/LUN feature of the storage system, which allows
you to configure custom-size LUs which are smaller than standard-size LUs. When custom-size LUs are
assigned to a Continuous Access Journal pair, the secondary data volume must have the same capacity
as the primary data volume.
Table 12 on page 43 shows the emulation types and capacities of the master and restore journal volumes
that can be used for a Continuous Access Journal.
Table 12 Journal Volume Specifications
Item
Support Specifications
Emulation type
Same.
Note: Only Open-V can be used for journal volumes.
Volume capacity
Same or different amount of capacity is available.
Table 1 3 on p a ge 44 shows the RAID level combination of data volume and journal volume in the journal
group that can be used for Continuous Access Journal.
XP24000 Continuous Access Journal Software User a nd Reference Guide
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