This is the setting used for Google Cloud Storage using the filestore using the Google native client. when configuring filestore sharding for an HA cluster. It is based on the sharding and dynamic provider logic that synchronizes the cluster-file-system.
When using the cluster-google-storage-v2 template, data is temporarily stored on the file system of each node using the Eventual Binary Provider, and is then passed on to your Google storage for persistent storage.
Each node has its own local filestore (just like in the file-system binary provider) and is connected to all other cluster nodes via dynamically allocated Remote Binary Providers using the Sharding-Cluster Binary Provider.