split brain

hi,

if i have 7 nodes in vcs,node a to node e serve 4 service failover groups and node f and g serve an orac.If suddenly i have a split brain case,all the nodes lose the llt conection,what is the fastest and secure way to deal with this?

sure i should to shutdown nodes but i need the sequence.

i will start with shutdown node f or g.then i will shutdown 4 from the nodes a to e.let`s say i shutdown node b to e.i start then  node b and see what service group in online on it.then node,then node e.i make sure on every node a to e there is only a single group online.

tnbx a lot.