Dear all,
Apparently, my question was not enough clear so I will retry to explain :-) :
On VSAN 6.7U1, It is possible the configure some VM on the secondary site with a VSAN policy: "site disaster tolerance - None - keep data on non-preffered site" and "failure to tolerate - 1 failure raid-5" + DRS affinity to enforce the execution of these VM on the secondary site.
In case of split-brain, the stretched VM, with "site disaster tolerance - dual site mirroring" will reboot on the preffered site becaue of witness and number of vote etc...
But what about the VM with "keep data on non-preffered site"? Did they stay up and running on the secondary site? It should be the case because the majority of vote is OK but not 100% sure
Kind regards