HP StorageWorks External Storage XP user guide for the XP12000, XP10000, SVS200 (T1706-96009, October 2007)

Figure 15 Example of Continuous Access XP operations

1. Use External Storage XP to map a volume in the external array to an internal LDEV of the local

Continuous Access XP RCU array.

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).

2. If you set an open-system emulation type when mapping the volume, the mapped volume's status

automatically becomes Normal. However, the volume-formatting process is not automatically

executed. To optionally format the mapped volume, use the Custom Volume Size (CVS) function.

For instructions, see the HP StorageWorks LUN Conﬁguration and Security Manager XP user guide

for the XP12000/XP10000/SVS200.

Go to step 4.

3. If you set a mainframe-system emulation type when mapping the volume, the mapped volume's status

becomes Blockade. To format the volume, use the CVS function. To restore the volume, 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.

Preparing for External Storage XP operations