Hi. I would like to know about the fail over mechanisms implemented by the iSNS for ISCSI. The RFC states that "Note that it is possible to create multiple physical iSNS servers to form a single logical iSNS server cluster, and thus to distribute iSNS transaction processing among multiple physical servers. However, a more detailed discussion of the interactions between physical servers within a logical iSNS server cluster is beyond the scope of this document."

I tried searching but most of the implementations are Windows related and too are not fully explained.
It would be very helpful if any links or documents are provided for the same.