HP XP External Storage Software - Manual (Page 51)

perform the Write to Control Blocks operation if you mapped a volume for which the data area
has already been zero-formatted on the external array side. For instructions, see the
HP StorageWorks LUN Configuration and Security Manager XP user guide for the
XP12000/XP10000/SVS200.
Go to step 4.
4. Set the Continuous Access XP pair's P-VOL and S-VOL.
Using external LUs for Continuous Access XP Journal operations
Figure 16 shows an example of using the external LU for Continuous Access XP Journal operations.
The mapped external LU is set as the Continuous Access XP Journal pair's S-VOL, and the volume in
the local array that is connected as the MCU is set as the Continuous Access XP Journal's P-VOL. For
more information, see the HP StorageWorks Continuous Access XP Journal user guide.
Figure 16 Example of Continuous Access XP Journal operations
1. Use External Storage XP to map the volume in the external array as an internal LDEV of the local
array, which is used as the RCU for Continuous Access XP Journal operations.
CAUTION:
Set the IO Suppression mode to Disable.
Select the mapped volume's emulation type as required. If you select an open-system emulation
type (such as OPEN-V), go to step 2. If you select a mainframe-system emulation type (such as
3390-3), go to step 3.
For more information, see Mapping external LUs (Add LU) .
External Storage XP user guide for the XP12000, XP10000, SVS200 51