This is a normal behavior.
This ESXi build is not patched like HBA build so you can't install directly DSM on a SCSI/SAS controller.
Sorry... My bad..
I have not seen properly the notice.
ESXi v1.1 is working with synoboot-3827-pre-v1.1_v7_hba.img ( after convert to vmdk. )
Thank you =)