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A financial institution is migrating its legacy mainframe applications to Google Cloud. The applications require extremely low latency access to shared file storage, with strict consistency and high IOPS. The data needs to be accessible by multiple Compute Engine instances simultaneously. Which Google Cloud storage service should be recommended?
- ACloud Bigtable
- BFilestore Enterprise
- CPersistent Disk
- DCloud Storage Standard
Show answer & explanationAnswer & explanation
Correct answer: B. Filestore Enterprise
Filestore Enterprise provides fully managed, highly available, and scalable Network File System (NFS) storage with extremely low latency and high IOPS, suitable for enterprise applications requiring shared file systems like mainframe migrations.
Why the other options are wrong
- A. Cloud Bigtable is a NoSQL wide-column database, not a file system, and is not suitable for typical mainframe file access patterns.
- C. Persistent Disk is block storage attached to a single VM, not a shared file system accessible by multiple instances simultaneously.
- D. Cloud Storage is object storage, not a shared file system, and does not offer the low latency and IOPS required for this use case.
Filestore Enterprise
A fully managed, highly available, and scalable Network File System (NFS) service on Google Cloud, designed for enterprise workloads.
- Shared file storage (NFS)
- Extremely low latency and high IOPS
- Regional availability with zone-level replication
- Suitable for enterprise applications, GKE, SAP
Memory trick: Filestore is where files are stored and shared, like a digital office cabinet.