HP StorageWorks XP Remote Web Console Software - Manual (Page 183)

The Paircreate window shows the following:
•
P-VOL: A primary data volume. The numbers indicate the port number, the GID, and the LUN
of the primary data volume. The numbers in parentheses indicate the LDKC number, the CU
number, and the LDEV number. The GID is a group number for a host group.
This column shows only one primary data volume even when two or more primary data volumes
are selected in the Pair Operation window. P-VOL shows only the primary data volume that
has the smallest LUN (LU number).
A device ID ending in # (for example, 00:00:3C #) indicates the LDEV is an external volume.
For detailed information about external volumes, see the HP StorageWorks XP24000/XP20000
External Storage Software User Guide.
A device ID ending in X (for example, 00:00:3C X) indicates the LDEV is an XP Thin
Provisioning virtual volume. For detailed information about virtual volumes, see the HP
StorageWorks XP24000/XP20000 Thin Provisioning Software User Guide.
•
S-VOL: Select a secondary data volume. When specifying a secondary data volume, you must
use the three lists to select a port, a GID, and a LUN of the secondary data volume. The GID
is a group number for a host group.
You can select only one secondary data volume even when two or more primary data volumes
are selected in the Pair Operation window. XP Continuous Access Journal automatically
specifies the other secondary data volumes. For detailed information, see the explanation
about the Select Other S-VOL(s) option later in this section.
If you selected more than one primary data volume, select the secondary data volume for the
primary data volume being displayed. The secondary data volumes for the rest of the primary
data volumes are automatically assigned according to the LUN. For example, if you select
three primary data volumes and select LUN01 as the S-VOL for the first primary data volume,
the secondary data volumes for the two other primary data volumes is LUN02 and LUN03.
When creating more than one pair at a time, make sure that the S-VOLs to be assigned
automatically are available. If an S-VOL is not available, select the S-VOL individually.
You can specify the port number as two characters. For instance, you can abbreviate CL1-A
to 1A. You can also enter the port number in both lowercase and uppercase characters.
•
Select Other S-VOL(s): Specify how XP Continuous Access Journal automatically assigns
secondary data volumes if two or more primary data volumes are selected in the Pair Operation
window.
◦ Increment: XP Continuous Access Journal increments LUNs of the resulting secondary data
volumes one by one. For example, if the LUNs of the three primary data volumes are
001, 002, and 003, the LUNs of the resulting secondary data volumes will be 011, 012,
and 013 if you select the LUN 011 with the S-VOL drop-down list.
◦ Input Next: Specify a LUN for each primary data volume. For example, if two primary
data volumes are selected, select Input Next, specify the secondary data volume for the
first primary data volume with S-VOL, and then click Set. Next, specify the secondary
data volume for the second primary data volume with S-VOL, and then click Set.
◦ Relative to P-VOL: XP Continuous Access Journal calculates the difference between LUNs
of two adjacent primary data volumes, and then determines LUNs of secondary data
volumes.
For example, if the LUNs of the three primary data volumes are 001, 005, and 006, the
LUNs of the resulting secondary data volumes will be 002, 006, and 007 if you select
the LUN 002 with the S-VOL drop-down list.
If you select and right-click more than one volume in the Preview list and then select Modify,
the Paircreate window opens and the Select Other S-VOL(s) list indicates No Change. To
change the setting with this list, select another option from the list.
Creating a Pair of Data Volumes (Paircreate) 183