Filestore shares files; Cloud Storage FUSE exposes objects through file calls

Filestore is managed NFS with ReadWriteMany semantics. Cloud Storage FUSE is useful when applications need file-like access to buckets, especially for model data, but object-store semantics still matter.

Filestore

Durable shared NFS for multiple readers and writers.

Enterprise tier

Regional availability and multishare options for suitable workloads.

Cloud Storage FUSE

Mounts an existing bucket through a CSI-managed integration.

Cache and buffer

Local SSD, Persistent Disk or memory can improve reads and stage writes.

Do not migrate a POSIX-sensitive database onto an object-backed mount because the path looks like a directory.

Filestore shares files; Cloud Storage FUSE exposes objects through file calls

File and object-backed storage is easiest to understand by separating the Kubernetes contract from the Google Cloud implementation. Filestore provides NFS and ReadWriteMany behavior. Cloud Storage FUSE lets applications use file I/O against Cloud Storage buckets and is common for AI model data. The Kubernetes objects stay familiar, but GKE supplies controllers, infrastructure and safe defaults around them. This is why a team can move from an on-premises cluster without rewriting every workload, while still needing to redesign networking, identity and operational ownership for the cloud environment.

A useful inspection step is `kubectl get csidrivers`. Read the output as evidence, not as a ritual: first confirm the desired object exists, then look at status conditions, events and the Google Cloud resource it represents. In production, capture the expected result in a runbook or automated check so an operator can distinguish slow reconciliation from a configuration error.

Production gotcha: Filesystem-like access does not erase object-store semantics, performance characteristics or close-time write behavior. The safe habit is to verify quotas, regional availability and feature support against current Google Cloud documentation before rollout. Backup must protect both Kubernetes objects and supported volume data.