Virtual Iron could use both physical-storage or virtual-storage access models. However, the use of a virtual-storage access model leveraged SAN storage to create a fault-tolerant iSCSI or Fibre Channel based cluster of virtual nodes. The VI Center installed on both Windows and Linux. After installation, the administrator had to configure a "management network" for the purpose of communicating with nodes in the cluster. The VI Center used the management network to PXE boot any server that was connected and correctly configured (for PXE boot).