HP XP Data Shredder Software - Manual (Page 34)

Using mapped external LUs from the host connected to the
local array
The following sections describe examples of using the mapped external LU from the host connected
the local array.
Writing new data to mapped external LUs
Figure 9 shows an example of writing new data in the mapped external LU from the host connected to
the local array.
1. Use the External Storage XP GUI to map the LU in the external array as an internal LDEV of the
local array.
CAUTION:
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 StorageWorks
LUN Configuration and Security Manager XP user guide for the XP12000/XP10000/SVS200.
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 StorageWorks LUN Configuration and Security Manager XP user guide for the
XP12000/XP10000/SVS200.
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.
34 Preparing for External Storage XP operations