We've been moving our main datastore off of Couchbase for a few years now, but I've still got to run it. Right now I have it running on four or five very large instances on EC2. Each instance has its own 1TB or so of disk space, and the database runs in cluster mode, with each of the nodes doing service discover to find each other. It'd be very nice to run this on Render. I could make a distinct service per node and bootstrap the cluster by hand, but it might be nice to be able to just configure the number of instances, and have each instance get its own disk space automatically.