HP XP Array Manager Software - Manual (Page 65)

• If you select a channel adapter, the Port list displays a list of Fibre Channel ports on the
channel adapter.
3. Select a port from the Port list or the Select a Port drop-down list.
The Mode area displays information about the selected ports.
4. Select an address from the Fibre Addr. drop-down list in the Mode area.
5. Click the Set button.
A message appears and asks if you want to change the port settings.
6. Click the OK button to close the message.
The settings are applied to the Port list (but not to the storage system). The changes are indicated
in blue.
7. Click the Apply button.
A message appears and asks if you want to apply the setting to the storage system.
8. Click the OK button to close the message.
The settings are applied to the storage system.
Setting the Fibre Channel Topology
The term topology indicates how devices are connected to each other. Fibre Channel provides the
following types of topology:
• Fabric: Utilizes a fabric switch to connect a large number of devices (up to 16 million) together.
Each device will have the full bandwidth of 100 MB/sec.
• FC-AL (Fibre Channel-Arbitrated Loop): Shared interface that can connect up to 126 devices
(AL-ports) together. The 100 MB/sec bandwidth is shared among the devices connected to
each other.
• Point-to-point: The simplest fibre topology connects two devices directly together.
Figure 37 FC-AL Topology and Point-to-point Topology
When you configure your system, you must use the LUN Manager window to specify whether the hosts
and the storage system are connected via a fabric switch.
If a fabric switch is used, you must specify FC-AL or point-to-point in the LUN Manager window (By
default, FC-AL is specified). You must consult the documentation for the Fabric switch to learn whether
FC-AL or point-to-point should be used. Some fabric switches require you to specify point-to-point to
get the system running.
If no fabric switch is used, you must specify FC-AL.
To specify the topology:
1. Start LUN Manager and display the Port window ( Figure 9 on page 26).
2. In the Package tree, select the Fibre folder or a channel adapter of Fibre Channel
( Figure 9 on page 26).
XP24000 LUN Manager User's Guide 65