External Storage XP user guide 39
Using external LUs for Auto LUN XP operations
Figure 14 shows an example of using an external LU for Auto LUN XP operations. The mapped external LU
is set as the source volume, and the local disk array internal XP LDEV is set as the target volume. Existing
data in the external LU is (in effect) manually migrated to the internal XP LDEV on the local disk array using
Auto LUN XP. For more information, see the HP StorageWorks Auto LUN XP user guide for the
XP12000/XP10000.
Figure 14 Using external LUs for Auto LUN XP operations
1. Use External Storage XP to map the LU in the external disk array as an internal XP LDEV of the local
disk array.
For this example, set the following attributes for the mapped LU:
• Emulation type: OPEN-V
• IO Suppression mode: Disable
For more information, see ”Mapping external LUs (Add LU)” on page 60.
CAUTION: To migrate existing data in the mapped external LU to a local disk array volume using
Auto LUN XP or Business Copy XP, as shown in Figure 14, set the XP12000/XP10000 emulation
type to OPEN-V when mapping the LU. Only OPEN-V emulation can be used to read existing data
in the external LU from the local disk array side.
To copy existing data in the mapped external LU using HP StorageWorks software products, such as
Continuous Access XP and Business Copy XP, the mapped external LU’s emulation type must also be
OPEN-V.
2. Prepare a local disk array internal XP LDEV with the same capacity as the mapped external LU. Use
Volume Manager to adjust the internal XP LDEV’s capacity as required. For instructions, see the
HP StorageWorks LUN Configuration and Security Manager XP user guide for the
XP12000/XP10000.
CAUTION: The emulation type of the XP12000/XP10000-prepared internal XP LDEV must be
OPEN-V.
3. Set the mapped external LU as the source volume, and set the local disk array internal XP LDEV as the
target volume.
4. Use Auto LUN XP to manually migrate existing data in the mapped external LU to the local disk array
internal XP LDEV (without changing the associated LDEV/LU).
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