I recommend creating a new concept module called "Storage considerations" for the "About AI" assembly. This would make the information much more visible.

Add the following note: Multipathing for ISCSI is not supported in the Assisted Installer.

(We are blocking multipath + iscsi. iscsi boot with a single interface will be supported.)

The note should be added to the following sections:

3.7 Configuring storage disks, at the end of the introduction:  

4.10.1 Modifying storage disk configuration, at the end of the introduction. 

Background information from the OCP guide:

• https://docs.openshift.com/container-platform/4.16/release_notes/ocp-4-16-release-notes.html (Support for ISCSI boot volumes)

• https://docs.openshift.com/container-platform/4.16/storage/persistent_storage/persistent-storage-iscsi.html