GCP Professional Cloud Architect Practice Question

Your retail analytics platform runs on a regional GKE cluster that spans zones us-central1-a and us-central1-b. Every pod must simultaneously read from and write to an 8 TB shared directory over NFSv4. The business insists on a fully managed solution that continues serving I/O automatically if an entire zone fails. Which Google Cloud storage option best addresses these requirements?

Mount a Cloud Storage bucket in each pod using Cloud Storage FUSE for shared file access.
Provision a Filestore High Scale SSD instance in one zone and rely on Cloud DNS to redirect mounts after a failure.
Create a Filestore Enterprise instance in the region and mount it on the GKE pods.
Attach a regional persistent disk to a single NFS server Deployment and expose it to the cluster.

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Answer Description

Filestore Enterprise is a fully managed NFS service that synchronously replicates data across two zones in the same region and offers automatic failover within seconds if a zone becomes unavailable. It provides ReadWriteMany semantics required by GKE workloads and eliminates the need to manage NFS servers.

Filestore High Scale is zonal only, so a single-zone instance would be unavailable during a zone outage. Cloud Storage FUSE mounts do not offer true POSIX file-system semantics or NFSv4 protocol support and have higher latency. Running a self-hosted NFS server on a VM or Deployment would violate the requirement for a fully managed service and creates a single point of failure unless you build and operate your own HA layer.

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