When you configure a LUN on the appliance you can export that volume over an Internet Small Computer System Interface (iSCSI) target. The iSCSI service allows iSCSI initiators to access targets using the iSCSI protocol.
The service supports discovery, management, and configuration using the iSNS protocol. The iSCSI service supports both unidirectional (target authenticates initiator) and bidirectional (target and initiator authenticate each other) authentication using CHAP. Additionally, the service supports CHAP authentication data management in a RADIUS database.
The system performs authentication first, and authorization second, in two independent steps.