Yup, Gianluca is right. 
My bad to mention  RHV 4.2 Beta release notes instead of  CaptinKVM blog post "https://www.ovirt.org/documentation/vmm-guide/chap-Additional_Configuration/"
"""
Support for Ceph via iSCSI – The Ceph iSCSI target has been tested and certified as a storage domain for virtual machines. This provides more infrastructure and deployment choices for engineers and architects.
"""

Do we have any oVirt documentation mentioned that? 

Best regards,
Ab 

On Mon, Jan 8, 2018 at 2:15 PM, Gianluca Cecchi <gianluca.cecchi@gmail.com> wrote:
On Mon, Jan 8, 2018 at 2:06 PM, Fred Rolland <frolland@redhat.com> wrote:
Hi,

Do you have a link about this information?

Thanks,
Freddy


 

Probably he refers to this blog:

with:
"
Support for Ceph via iSCSI – The Ceph iSCSI target has been tested and certified as a storage domain for virtual machines. This provides more infrastructure and deployment choices for engineers and architects.
"

It seems a described feature that didn't get any referral in oVirt 4.2 release notes:

But I think in general, given a version, it is not guaranteed that what in RHEV maps with what in oVirt and viceversa.
I don't know if this one about Ceph via iSCSI is one of them.
Gianluca