SQL HA and FIM 2010 R2 SP1 support

hi,

according to a forum post - "The only supported HA back-end for FIM is SQL Cluster, AlwaysOn or another replications (for example log shipping) are not supported."  https://social.technet.microsoft.com/Forums/en-US/f2b1a9e7-c327-485e-86fc-f1b89017d3fd/active-passive-fim-2010-r2-deployment-across-2-dcs?forum=ilm2&prof=required

is this true?

and where could we find this as an official MS statement for FIM 2010 R2 SP1 & SQL 2008/2012?

thanks,

sk