iSCSI LUNs appear as local disks to the host. If the storage system LUNs are not available as disks on the hosts, verify the configuration settings.
|Configuration setting||What you should do|
|Cabling||Verify that the cables between the host and the storage system are properly connected.|
|Network connectivity||Verify that there is TCP/IP connectivity between the host and the storage system. From the storage system command line:
|iSCSI service status||Verify that the iSCSI service is licensed and started on the storage system. For more information, see the Data ONTAP SAN Administration Guide for 7-Mode.|
Verify that the initiator is logged in to the storage system by entering the iscsi show initiator command on the storage system console.
If the initiator is configured and logged in to the storage system, the storage system console displays the initiator node name and the target portal group to which it is connected.
If the command output shows that no initiators are logged in, check the initiator configuration on the host. Verify that the storage system is configured as a target of the initiator.
|iSCSI node names||
Verify that you are using the correct initiator node names in the igroup configuration.
On the storage system, use the igroup show command to display the node name of the initiators in the storage system’s igroups. On the host, use the initiator tools and commands to display the initiator node name. The initiator node names configured in the igroup and on the host should match.
Verify that the LUNs are mapped to an igroup.
On the storage system, use one of the following commands:
|System requirements||Verify that the components of your configuration are supported. Verify that you have the correct host Operating System (OS) Service Pack level, initiator version, Data ONTAP version, and other system requirements. You can check the up-to-date system requirements in the NetApp Interoperability Matrix.|
|Jumbo frames||If you are using jumbo frames in your configuration, ensure that the jumbo frames are enabled on all the devices in the network path: the host Ethernet NIC, the storage system, and any switches.|
|Firewall settings||Verify that the iSCSI port (3260) is open in the firewall rule.|