HP StorageWorks XP Remote Web Console Software - Manual (Page 29)

Using existing data in mapped external LUs
Figure 10 (page 29) shows an example of using existing data in a mapped external LU from the
host connected to the local array.
1.
From the host connected to the external array, write data to the LU in the external array.
2. Use XP External Storage to map the LU in the external array containing data as an internal
LDEV of the local array.
When mapping the external LU, 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) .
CAUTION: You must set the emulation type to OPEN-V to read existing data in the mapped
external LU from the local array side.
3. Configure the path from the Target port to the mapped LU to perform host I/O operations.
After the path is set, host I/O operations to the mapped volume are available.
NOTE: Do not access any external storage volume that is mapped as an XP External Storage
volume from a host connected directly to the external array. Also, do not access an XP External
Storage mapped external array volume using the external array's functions (for example, local
replication). After mapping an external disk volume as a local array volume, access the mapped
external disk volume only via the local array.
NOTE: Except on the MSA, a host can directly access external array volumes that are not mapped
as local array volumes.
Figure 10 Using existing data in mapped external LUs (without formatting)
Uninstalling XP External Storage
To uninstall XP External Storage, cancel any existing Flex Copy pairs, and delete any external LU
mappings.
Uninstalling XP External Storage 29