iSCSI Target Mutual CHAP Test (LOGO)

This test verifies that the target device (disk, tape, or optical storage device) can use the Challenge Handshake Authentication Protocol (CHAP) authentication mechanism.

Test details


Associated requirements


See the device hardware requirements.


Windows 7 (x64)
Windows 7 (x86)
Windows 8 (x64)
Windows 8 (x86)
Windows Server 2012 (x64)
Windows Server 2008 R2 (x64)
Windows Server 2008 x64
Windows Server 2008 x86
Windows 8.1 x64
Windows 8.1 x86
Windows Server 2012 R2

Expected run time

~5 minutes





Running the test

Before you run the test, complete the test setup as described in the test requirements: iSCSI Boot Component Testing Prerequisites.

If this is the first time you are running an iSCSI HBA test, iSCSI Target test, or MPIO test over iSCSI bus type on the HCK client, or if there is no iscsihctconfig.ini under [HCK Path]\JobsWorkingDir\ on the HCK client, you will receive a pop-up dialog box to input iSCSI configuration information and/or HBA information. For more information about this dialog box, see “Running the test” in iSCSI HBA Boot Test (LOGO).


For troubleshooting information, see Troubleshooting Device.Storage Testing.

In addition:

  1. Look at the job results log file for test failures.

  2. Enter the required data in the configuration dialog box that appears when this job is scheduled. For more information, go to iSCSI HBA Boot Test (LOGO).

This test always return Pass or Fail. To review test details, review the test log from the Windows HCK Manager.

More information

The test uses multiple variations to verify that a target properly supports mutual CHAP. The first variation performs a logon similar to the user logging on through iSCSI Initiator Control Panel Applet. The rest of the variations perform logon outside of the Microsoft initiator by using the iSCSI protocol. Each variation challenges the target by using different challenge sizes with different encodings. The target is expected to calculate the proper response.

There are four different variations:

  1. Challenge size of 1 byte using hexadecimal encoding

  2. Challenge size of 1 byte using Base64 encoding

  3. Challenge size of 1024 bytes using hexadecimal encoding

  4. Challenge size of 1024 bytes using Base64 encoding

To run this test:

  1. Set up the initiator and the target with CHAP secrets.

  2. Run the test as a Driver Test Manager (DTM) job.

  3. Enter the required data in the configuration dialog box that appears when this job is scheduled.



Parameter Description


The verbosity of logging. There are three levels of output: 0, 1, and 2. 2 is the most verbose.

Default value: 1

Command syntax


Command option Description

iscsi_targetchap -mutual -hct

Runs the test.

For command-line help for this test binary, type /h.

File list


File Location



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