GCP Associate Cloud Engineer Practice Question

Your team is migrating a media rendering farm from on-premises NAS to Google Cloud. Each render worker runs in a zonal managed instance group and needs simultaneous read/write access to a shared POSIX file system with sub-millisecond latency and throughput over 5 GB/s. You want a fully managed solution and do not want to run your own NFS servers. Which storage product best meets these requirements?

Provision a regional Persistent Disk, enable multi-writer mode, and attach the disk to every VM in the instance group.
Deploy a Google Cloud NetApp Volumes FlexCache share and manage the NFS exports for the render workers.
Create a Filestore High Scale SSD instance in the same zone and mount it on all render workers via NFS.
Store assets in a Cloud Storage bucket and mount the bucket on each VM using gcsfuse.

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Answer Description

Filestore High Scale SSD is a fully managed NFS service that delivers POSIX-compliant shared storage with sub-millisecond latency and up to 12 GB/s throughput, satisfying the rendering farm's high-performance and concurrency needs without the overhead of administering NFS servers. A regional Persistent Disk in multi-writer mode is a block device, not a shared file system, and is limited to lower aggregate throughput. Mounting a Cloud Storage bucket with gcsfuse provides object storage semantics and higher latencies, making it unsuitable for low-latency POSIX workloads. Google Cloud NetApp Volumes can supply NFS, but it targets enterprise data-management use cases and adds features and costs unnecessary for this zonal, performance-oriented workload; Filestore is the simpler, purpose-built choice.

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