Starting MetaDefender Core 4.20.0, the centralized/shared database deployment model is supported (all MetaDefender Core instances share the same database), along with traditional standalone database mode (every MetaDefender Core instance has its own database to manage).
Standalone database mode: same installation instructions described at 2.2.2. MetaDefender Core 4.19.x
Shared database mode: 10.6. Shared Database Among MetaDefender Core Instances