How SnapDrive uses CHAP authentication

If it is required by your storage system, use CHAP authentication to validate the identity of the login information being sent to the storage system from an iSCSI initiator when you create an iSCSI session.

The Challenge Handshake Authentication Protocol (CHAP) enables authenticated communication between iSCSI initiators and targets. When you use CHAP authentication, you define the CHAP user names and passwords on the initiator and the storage system.

Note: SnapDrive requires that the CHAP password contains at least 12 characters.

During the initial stage of the iSCSI session, the initiator sends a login request to the storage system to begin the session. The login request includes the initiator’s CHAP user name and algorithm. The storage system responds with a CHAP challenge. The initiator provides a CHAP response. The storage system verifies the response and authenticates the initiator. The CHAP password is used to compute the response.