6.2 HP IBRIX 9000 Storage Network Best Practices Guide (TA768-96069, December 2012)

Fusion Manager VIF failover
The Fusion Manager uses a VIF to enable it to fail over across the cluster. A single cluster-wide IP
address is chosen for the Fusion Manager. The FSN that is running the active Fusion Manager then
establishes an active VIF for the Fusion Manager’s IP address. When the Fusion Manager needs
to fail over to a different FSN, the following occurs:
1. The original FSN hosting the active Fusion Manager disables its FM VIF.
2. The new FSN that will host the active Fusion Manager enables its FM VIF.
Example FM failover
The following example illustrates what occurs when the active Fusion Manager migrates between
file serving nodes. The example shows an IBRIX 9730 platform in a unified network topology. The
IP addresses and other identifiers have been chosen for illustration purposes and could be different
on a customer installation.
In this example, the active Fusion Manager has been assigned a cluster-wide IP address of
10.30.214.201. The active Fusion Manager starts on FSN 1 and will migrate to FSN 2. Figure
2 shows the initial state of the VIFs on FSN 1 and FSN 2. The interfaces in bold (bond0) are active
on the FSN, while the other interfaces are the standby interfaces put in place for failover.
Figure 2 FM failover example — start state
Initially, FSN 1 has three active interfaces and one standby interface:
• bond0is the cluster network interface
• bond0:0 is a cluster network VIF for the active Fusion Manager
• bond0:2 is a user network VIF for file serving from FSN 1
• bond0:3 is not active, but is provisioned for failover of file serving duties from FSN 2
Initially, FSN 2 has two active interfaces and two standby interfaces:
• bond0 is the cluster network interface
• bond0:0 is not active, but has been provisioned to support Fusion Manager failover
• bond0:2 is a user network VIF for file serving from FSN 2
• bond0:3 is not active, but is provisioned for failover of file serving duties from FSN 1
The ibrix_nic command displays the cluster-wide configuration of the network. Before failing
over the FM, the output would be similar to the following:
8 Overview of HP IBRIX 9000 Series networking