Restoring External Lus (Restore) - HP StorageWorks User Manual

External disk array's product serial number.
• Group
External LU group and reference number of the external LU in the group.
• Characteristic
External LU's identification number.
• Device
External LU's device name.
• Capacity
External LU's capacity. When you set an open-system emulation type for the mapped external LU,
capacity is displayed in 512-byte blocks. When you set a mainframe-system emulation type, capacity is
displayed in cylinders.
NOTE:
XP copy pair that has the same capacity as the P-VOL, set the S-VOL's capacity in blocks or
cylinders according to the emulation type.
• LDEV List
The status of external LUs mapped as internal XP LDEVs. The following information appears:
• CU:LDEV: CU:LDEV number of the internal XP LDEV to which the external LU is mapped.
• Path: Number of set paths.
• Emulation Type: External LU's emulation type that was set when it was mapped.
• Capacity: External LU's capacity.
• Status: External LU's status. Possible values: Normal, Unknown, Blockade, Warning, and Format.
Warning indicates that some alternate paths are blocked. Format indicates the external LU is
currently being formatted.
• View all LUs
Displays information about all external LUs in the LDEV list.
• View all Volumes
When the external LU is part of a LUSE volume, the LDEV list displays all LDEVs that make up the LUSE
volume. However, LDEVs in other external LUs are not displayed, even though those LDEVs might be
part of the LUSE volume. To check all LDEVs configuring a LUSE volume, use the Volume Detail
command
• Previous and Next buttons
If you select multiple external LUs in the Device list in the LU Operation pane, click Previous to change
the LDEV list to the external LU appearing just above the currently displayed LU. Click Next to change
the LDEV list to the external LU appearing just below the currently displayed LU.
• OK button
Closes the LDEV Information window, and returns to the LU Operation pane. Contents specified in the
LDEV Information window appear in blue italics in the Device list, and settings appear in the Preset list.
• Cancel button
Cancels all setting operations, closes the LDEV Information window, and returns to the LU Operation
pane.

Restoring external LUs (Restore)

Use the Restore command to restore the status of external LUs.
When errors occur in all paths between the local disk array and external disk array, the local disk array
changes the status of the external LU to Blockade. In this case, see
on page 95 and restore the path to the external disk array according to the troubleshooting instructions.
Then execute the Check Paths & Restore Vol. command to make the external LU in Blockade status usable.
If the external LU's status remains Blockade, even though you restored the path to the external disk array
When you use the Custom Volume Size (CVS) function to make an S-VOL for a Flex Copy
("Displaying configuration information for external LUs (Volume Detail)" on page 85).
"Troubleshooting External Storage
External Storage XP user guide
XP"
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