HP 3PAR AIX and IBM Virtual I/O Server Implementation Guide

where 10000000C94E6031 is the HBA WWN.
Detecting Auto Topology
IBM FC HBAs auto-detect the topology during a host reboot.
Setting Host HBA Parameters DynamicTracking and FastFail
The following settings are required on the IBM FC HBAs for the DynamicTracking and FastFail
parameters.
Direct connect:
• DynamicTracking disabled
• FastFail enabled
Fabric connect:
• DynamicTracking enabled
• FastFail enabled
NOTE: Change these parameters on the AIX host or the IBM Virtual I/O Server. The host requires
a reboot to enable these changes.
When dynamic tracking of FC devices is enabled, the FC adapter driver can detect when the Fiber
Channel N_Port ID of a device changes and can reroute traffic destined for that device to the new
address while the devices are still online.
The following events can cause an N_Port ID to change:
• Moving a cable between a switch and storage device from one switch port to another.
• Connecting two separate switches via an Inter-Switch Link (ISL).
• Rebooting a switch.
Setting the IBM FC HBA parameter of FastFail speeds up recovery time in the event of a path
failure.
To set up DynamicTracking and FastFail on an IBM FC HBA, complete the following steps,
using the SMIT Devices menu:
1. Select FC Adapter.
2. Select FC SCSI I/O Controller Protocol Device.
3. Select Change/Show Characteristics of a FC SCSI Protocol Device.
4. Select the appropriate FC SCSI Protocol Device.
5. Set the following options:
• Dynamic Tracking of FC Devices to Yes.
• FC Fabric Event Error RECOVERY Policy to FastFail
• Apply change to DATABASE only to Yes
6. Exit the shell.
7. Restart the AIX host or IBM Virtual I/O Server.
Installing HP 3PAR MPIO on the AIX Server (Local Boot Drive) when Using
HP 3PAR OS 2.2.x or OS 2.3.x
This section describes installing the HP 3PAR MPIO on the AIX server or the IBM Virtual I/O Server.
18 Connecting the Host Server with Fibre Channel