HP Virtual Connect Fibre Channel Networking Scenarios Cookbook

17
Uplink port path failover
The module uses dynamic login distribution to provide an uplink port path failover that enables server connections
to fail over within the Virtual Connect fabric.
If a fabric uplink port in the group becomes unavailable, hosts logged in through that uplink are reconnected
automatically to the fabric through the remaining uplinks in the group, resulting in auto-failover.
Figure 16: Uplink port path failover
VC Domain
VC-FC Module
Fabric 1
VC SAN 1
Server 1
Server 4
Server 2
Server 3
HBA1 HBA2
HBA1 HBA2 HBA1 HBA2
Server 3
Server 2
Server 1
HBA1 HBA2
Server 4
This automatic failover saves time and effort whenever there is a link failure between an uplink port on VC and an
external fabric, and it allows smooth transition without much disruption to the traffic. However, the hosts must
perform re-login before resuming their I/O operations.