You can understand how to manage the iSCSI service, as well as manage the storage system as a target in the iSCSI network.
More information
Enabling multi-connection sessions
By default, Data ONTAP is now configured to use a single TCP/IP connection for each iSCSI session. If you are using an initiator that has been qualified for multi-connection sessions, you can specify the maximum number of connections allowed for each session on the storage system.
Enabling error recovery levels 1 and 2
By default, Data ONTAP is configured to use only error recovery level 0 for iSCSI sessions. If you are using an initiator that has been qualified for error recovery level 1 or 2, you can specify the maximum error recovery level allowed by the storage system.
iSCSI service management
You need to ensure the iSCSI service is licensed and running on your system, as well as properly manage the target node name and target alias.
iSNS server registration If you decide to use an iSNS service, you must ensure that your storage systems are properly registered with an Internet Storage Name Service server.
Displaying initiators connected to the storage system
You can display a list of initiators currently connected to the storage system. The information displayed for each initiator includes the target session identifier handle (TSIH) assigned to the session, the target portal group tag of the group to which the initiator is connected, the iSCSI initiator alias (if provided by the initiator), the initiator's iSCSI node name and initiator session identifier (ISID), and the igroup.
iSCSI initiator security management
Data ONTAP provides a number of features for managing security for iSCSI initiators. You can define a list of iSCSI initiators and the authentication method for each, display the initiators and their associated authentication methods in the authentication list, add and remove initiators from the authentication list, and define the default iSCSI initiator authentication method for initiators not in the list.
Target portal group management
A target portal group is a set of one or more storage system network interfaces that can be used for an iSCSI session between an initiator and a target. A target portal group is identified by a name and a numeric tag. If you want to have multiple connections per session across more than one interface for performance and reliability reasons, then you must use target portal groups.
Displaying iSCSI session information
You can use the iscsi session show command to display iSCSI session information, such as TCP connection information and iSCSI session parameters.
Guidelines for using iSCSI with HA pairs
To ensure that the partner storage system successfully takes over during a failure, you need to make sure that the two systems and the TCP/IP network are correctly configured.