I figured out most of my question. I had to dig through each of the published documentation for each service.
vCenter - Can be on shared SQL instance
Update Manager - Can be on shared SQL instance
SRM - Can be on shared SQL instance. But cannot share a SQL instance with another SRM install. We have a multi-site SRM install so we'll need multiple SQL instances.
vCloud Director - The documentation doesn't call out if it can be on shared instance. It just says that database performance is important for vCloud Director to run well and scale. So I assume it can be on a shared instance as long as it's configured for performance.
Orchestrator - uses the vCenter database so this doesn't matter.
vCAC - The documentation doesn't call out that it can be on a shared instance. But it allows you to use Express so I assume it would be fine using a shared instance.
Anyone have any specifics on if VMWare allows vCloud Director or vCAC use a shared DB instance?
