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Multi-network HA pair in an iSCSI SAN

You can connect hosts to HA pair controllers that use the iSCSI protocol over multiple IP networks. To be fully redundant, a minimum of two connections to separate networks per controller is necessary to protect against NIC, network, and cabling failure. The host will require multipathing software to be installed and configured.

Figure 1. iSCSI multi-network HA pair
Figure shows port e0a on controllers 1 and 2 connected to an Ethernet switch. Adapters e0b on controllers 1 and 2 are cabled to a different Ethernet switch. Multiple hosts have a connection to each Ethernet switch.

Attribute Value
Fully redundant Yes
Type of network Multi-network
Different host operating systems Yes, with multiple-host configurations
Multipathing required Yes
Type of configuration HA pair