Running VMware Infrastructure 3 on an HP SAN/iQ Software Version 8 SAN
Source: Hewlett-Packard (HP)
Before SAN connectivity via the iSCSI software adapter can be enabled, a specific network configuration is required. To correctly enable connectivity, a VMkernel network must be created with sufficient network access to the iSCSI SAN. As a best practice, use at least two Gigabit network adapters teamed together for performance and failover. To allow for iSCSI authentication, ESX servers also require a service console that can route to the iSCSI SAN.