What is the recommended approach to adding storage to Dgraph (self-hosted)?
For example, if I provision a 2-node cluster with an alpha of 500GB, and I need another 500GB of storage, how do I add this?
Do I have to create a new cluster with a 1TB alpha and migrate? Or is there a way I can horizontally scale by adding another Alpha group? (as suggested in Dgraph concepts )
Also, how does one determine remaining storage capacity for Dgraph? Is this equal to the free space on the volume / PVC where the Alpha is running?