I received a question today about SRM, vSphere Replication and VSAN. The current documentation for SRM says the following:
Do not select as placeholder datastores any datastores that you use as the replication target datastore for vSphere Replication.
The question was, what about when using VSAN? As with VSAN as the source and destination datastore I usually only have 1 datastore. What do I select as my placeholder datastore then? Well with VSAN the situation is different. When using VSAN the placeholder datastore selected can be the VSAN datastore where the VMs are also replicated to. This is a gap in our current documentation, and we will make sure to get this updated asap.
Yep, documentation needs a bit of tidying up to clear any confusion.
Later on, it seems to suggest no issues selecting the same datastore, other than potential confusion due to folder names
https://pubs.vmware.com/srm-61/index.jsp#com.vmware.srm.admin.doc/GUID-CCF2E768-736E-4EAA-B3BE-50182635BC49.html