Using External Lus For Continuous Access Xp Operations - HP StorageWorks User Manual

Using external LUs for Continuous Access XP operations

Figure 15 shows an example of using the external LU for Continuous Access XP operations. The mapped
external LU is set as the Continuous Access XP pair's S-VOL, and the volume in the local disk array that is
connected as the MCU is set as the Continuous Access XP pair's P VOL. For more information about
Continuous Access XP operations, see the HP StorageWorks Continuous Access XP user guide for the
XP12000/XP10000.
Figure 15

Using external LUs for Continuous Access XP operations

1. Use External Storage XP to map the volume in the external disk array as an internal XP LDEV of the
local Continuous Access XP RCU disk array.
CAUTION:
Select the mapped volume's emulation type as required. If you select an open-system emulation type
(such as OPEN-V), go to
to step 3.
For more information, see
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.
Go to step
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 disk array side. For instructions, see the HP StorageWorks LUN
Configuration and Security Manager XP user guide for the XP12000/XP10000.
Go to step
4. Use Continuous Access XP to set the Continuous Access XP pair's P-VOL and S-VOL.
40 External Storage XP for the XP12000/XP10000
Set the IO Suppression mode to Disable.
step 2. If you select a mainframe-system emulation type (such as 3390-3), go
"Mapping external LUs (Add
4.
4.
LU)" on page 60.