same problem here. vSphere 5.1 and... ...SRM.
So my LUN replicated on the spare datacenter has .vSphere_HA folder with data from the primary datacenter.
I don't find any configuration in HA to change things.
as you can see in the following picture there's only two datastore selected.
but all not selected but monted on the host of my cluster.
Is this a bug ?