HP StorageWorks External Storage XP user guide (T1706-96006, June 2006)

External Storage XP user guide 61
WWN list
Displays information about the connection status of the local array and external array corresponding to
the item selected in the WWN tree. You can sort the list by displayed items. For example, to sort by the
LUN number, select LUN on the list.
When performing setting operations, the settings appear in the Preset list and the corresponding row in
the WWN list appears in blue italics. For more information, see ”Preset list (LU Operation pane)” on
page 66.
Figure 32 WWN list (External Devices selected in the WWN tree)
The contents displayed in the WWN list changes depending on the item selected in the WWN tree.
• Subsystem
When selected, displays nothing in the WWN tree. Subsystem is selected when you initially display
the WWN tree.
• External Devices
• Serial: Product serial number.
• Product: Product name.
• Vendor: Vendor name.
• Ex-Dev. Status: Status of the operation executed to the external array, or status of the path
connection. Possible values: Normal, Unknown, Blockade, Warning, Checking, Cache Destage, or
Disconnect. For a description of these values, see Table 8.
• LDEV Status: Mapped external LU’s status. Possible values: Normal, Unknown, Blockade, Warning,
or Format. For a description of these values, see Table 9.
• Product name of the connected external array
• WWN: WWN identifying the port in the external array for which the connection setting is
completed.
• Path: Number of set paths.
• I/O TOV: Value specified as the timeout for I/O to the external LU.
• Qdepth: Number of Read/Write commands that can be issued (queued) to the external LU at one
time.
• Path Watch: Time period beginning when the connection of all paths to the external LU are down
and ending when the external LU is blocked.
• Mode: How alternate paths between the local array and external array work. Alternate path
modes include:
• Single: Uses only the path with the highest priority (primary path) to execute I/O to the external
LU. When an error occurs in the primary path, the path with the second highest priority is used.
• Multi: Uses all set paths at the same time to execute I/Os to the external LU, distributing the
work load.
• Status: Status of the path set in the port identified by the WWN. The highest emergency level status
appears when two or more paths are set. Statuses include:
• Normal: Path is normal.
• Unknown: Path status is unknown.