Servers that require high availability are often deployed in failover mode. Each of the servers is given an independent network connectivity path with redundant top-of-rack switches. Virtensys fully supports this model of deployment. The VIO-4000 I/O Virtualization series  can be deployed in either active - active or active - passive configurations. VIO-4000 appliances provide many modes of independent network connectivity paths. Each adapter within a VIO-4000 applaince is dual ported and each of the two ports can be placed on independent network path. Consequently, a single server can be given multiple, dual-port virtual I/O adapters that can be configured for greater Ethernet or Fibre Channel resiliency.