HP StorageWorks XP Remote Web Console Software - Manual (Page 28)

Writing new data to mapped external LUs
Figure 9 (page 28) shows an example of writing new data in the mapped external LU from the
host connected to the local array.
1.
Use the XP External Storage GUI to map the LU in the external array as an internal LDEV of
the local array.
CAUTION: Set the IO Suppression mode to Disable.
You can select the mapped volume's emulation type as required. If you select an emulation
type for an open-system (such as OPEN-V), go to step 2. If you select an emulation type for a
mainframe system (such as 3390-3), go to step 3
For more information, see Mapping external LUs (Add LU) .
2. For open-system emulation types (such as OPEN-V, which HP recommends), the status of the
mapped LDEV is set to Normal and is not automatically formatted. To optimally initialize the
mapped LU's data area, use Volume Manager to format the mapped LU. For instructions, see
the HP XP LUN Configuration and Security Manager user guide: HP XP12000 Disk Array, HP
XP10000 Disk Array, HP 200 Storage Virtualization System.
Go to step 4.
3. For mainframe-system emulation types (for example, 3390-XX), the status of the mapped LU
is set to Blockade, pending resizing and formatting. Use Volume Manager to format the volume.
If you mapped a volume for which the data area is already zero-formatted on the external
array side, use Volume Manager's Write to Control Blocks operation to restore the volume.
For instructions, see the HP XP LUN Configuration and Security Manager user guide: HP
XP12000 Disk Array, HP XP10000 Disk Array, HP 200 Storage Virtualization System.
4. Configure the path from the Target port to the mapped volume to perform host I/O operations.
The mapped LDEV is available for host I/O operations.
After the path is set, host I/O operations to the mapped LU are available.
Figure 9 Writing new data to mapped external LUs
28 Preparing for XP External Storage operations