Change Parameter Pane - HP StorageWorks XP12000 User Manual

Figure 60 Change Parameter pane
• IO TOV (10-240): Timeout value for the I/O to the external LU. The value can be 10 to 240 (in
second). The default value is 15.
• QDepth (8-128): Number of Read/Write commands that can be issued (queued) to the external
LU at one time. The value can be from 8 to 128. The default value is 8.
Path Blockade Watch (10-180): Time period beginning when the connection of all paths to the
•
external LU is down and ending when the external LU is blocked. Commands from the host are
accepted until the time set for this parameter has passed. After the time has passed, the path status
becomes Blockade. The value can be from 10 to 180 (seconds). The default value is 180.
CAUTION:
If there is no problem with the default setting, use the default setting.
CAUTION:
For the external LU used for typical I/O, set IO TOV to 15 seconds.
CAUTION:
To change the setting, match the value to the recommended value for the external array.
To change the setting of the port identified by the WWN by specifying an external array's WWN:
1. In the LU Operation pane, select the WWN tab. The WWN tree and WWN list appear.
2. In the WWN tree, select the product name of the connected external array identifying the external
array's port. The WWNs of all the ports that are connected to the local array and are used
appear in the WWN list.
3. In the WWN list, select the port for which you want to restore the path.
4. Right click, and select Change Parameter. The Change Parameter pane appears
5. Change the selected port's parameter.
6. Click OK. The Change Parameter pane closes, and the LU Operation pane appears. Selected
items appear in blue italics in the WWN tree and WWN list. The contents of the setting appears
in the Preset list.
To check the setting details, right-click the setting in the Preset list, and select Detail. To cancel
the setting, right-click the setting in the Preset list, and select Delete.
7. Click Apply. A confirmation message appears.
130 Configuring external LUs
(Figure 60).