HP XP External Storage Software - Manual (Page 31)

external port and limit the scope to search WWNs. If you can specify which external port to search for,
you can reduce the operation time by executing the Port Discovery manually.
Volume Discovery is a process to search for and get information about external volumes from the
target ports of the external storage system. Volume Discovery is automatically executed after the Port
Discovery process.
Using a Mapped External Volume from a Connected Host
There are two ways of using the mapped external volume from a host that is connected the local
storage system.
• Storing the new data in the mapped external volume (see
“ Storing New Data in the Mapped External Volume ” on page 31)
• Using the existing data in the mapped external volume (see
“ Using Existing Data in the Mapped External Volume ” on page 32)
Storing New Data in the Mapped External Volume
To store new data in a mapped external volume from a host that is connected to the local storage system:
1. Map the volume in the external storage system as an internal volume of the local storage system
using External Storage.
Select the emulation type of the mapped volume as you required. If you select the emulation
type for the open system (such as OPEN-V), go to step 2. If you select the emulation type for the
mainframe system (such as 3390-3), go to step 3.
For information on mapping operations, see
“ Mapping an External Volume Automatically ” on page 69.
2. If you set the emulation type for the open system when you map the volume, the status of the
mapped volume automatically becomes Normal. If you need to initialize the data area of the
mapped volume, format the volume using the VLL function. For the volume formatting procedure,
see the HP StorageWorks XP24000 Virtual LVI/LUN (VLL) and Volume Shredder User’s Guide.
Go to step 4.
3. If you set the emulation type for the mainframe system when you map the volume, the status of
the mapped volume becomes Blockade. Format the volume using the VLL function.
Note: For zero-formatted external volumes, when you select that volume to map, you can use
the VLL function to perform the Write to Control Blocks operation to restore the volume. For
instructions on how to format volumes and the Write to Control Blocks operation, see the HP
StorageWorks XP24000 Virtual LVI/LUN (VLL) and Volume Shredder User’s Guide.
Go to step 4.
4. To perform the host I/O operations, set the LU path from the Target port to the mapped volume.
After the LU path is set, the host I/O operation to the mapped volume becomes available.
XP24000 External Storage Software User’s Guide 31