You can disable CHAP if your storage system does not require it.

If you disable CHAP on a system that requires CHAP authentication, existing iSCSI sessions remain active until you reboot your ESXi host or the storage system forces a logout. After the session ends, you can no longer connect to targets that require CHAP.


Open the CHAP Credentials dialog box.


For software iSCSI, to disable just the mutual CHAP, select Do not use CHAP under Mutual CHAP.


To disable one-way CHAP, select Do not use CHAP under CHAP.

The mutual CHAP, if set up, automatically turns to Do not use CHAP when you disable the one-way CHAP.


Click OK.