You must follow the SAN Volume Controller configuration rules for iSCSI host connections.
You can attach the SAN Volume Controller to Small Computer System Interface Over Internet Protocol (iSCSI) hosts using the SAN Volume Controller's Ethernet ports.
Each SAN Volume Controller node has two Ethernet ports. For each Ethernet port, a maximum of one IPv4 address and one IPv6 address can be designated for iSCSI I/O.
iSCSI hosts connect to the SAN Volume Controller through the node-port IP address. If the node fails, the address becomes unavailable and the host loses communication with SAN Volume Controller. To allow hosts to maintain access to data, the node-port IP addresses for the failed node are transferred to the partner node in the I/O group. The partner node handles requests for both its own node-port IP addresses and also for node-port IP addresses on the failed node. This process is known as node-port IP failover. In addition to node-port IP addresses, the iSCSI name and iSCSI alias for the failed node are also transferred to the partner node. After the failed node recovers, the node-port IP address and the iSCSI name and alias are returned to the original node.
Multiple configurations are supported. You can have both node Ethernet ports on the same subnet, or you can have each Ethernet port on separate subnets and use different gateways. Before you configure the Ethernet ports on separate subnets, validate that the IP configuration is correct by pinging from the iSCSI host to the nodes, and vice versa.
A SAN Volume Controller VDisk can be mapped the same way either to a fibre-channel host, an iSCSI host, or both.
Each I/O group can map VDisks to the same total maximum number of host objects (256), which could include fibre-channel attachments, iSCSI attachments, or both.
A clustered Ethernet port consists of one Ethernet port from each node in the cluster that are connected to the same Ethernet switch. Because SAN Volume Controller nodes have two Ethernet ports, two clustered Ethernet ports are possible. Ethernet configuration commands can be used for clustered Ethernet ports or node Ethernet ports. SAN Volume Controller clusters can be configured with redundant Ethernet networks.
initial_r2t = 1 immediate_data = 0 max_connections = 1 Max_recv_segment_data_length = 32k max_xmit_data_length = 32k max_burst_length = 32k first_burst_length = 32k default_wait_time = 2 default_retain_time = 20 max_outstanding_r2t = 1 data_pdu_inorder = 1 data_sequence_inorder = 1 error_recovery_level = 0 header_digest = CRC32C,None data_digest = CRC32C,None ofmarker = 0 ifmarker = 0 ofmarkint = 2048 ifmarkint = 2048