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Difficulty: MediumBlob, File, and Disk Storage Solutions

An organization is migrating a high-performance Linux-based application to Azure Virtual Machines. The application requires a shared file system that supports POSIX-compliant file locks and the NFS protocol. The design requires that the storage solution must survive a single zone outage within an Azure region while maintaining high performance. Which storage solution should you recommend?

  1. Premium Azure Files configured with Zone-Redundant Storage (ZRS) using the NFS protocol.Answer
  2. B
    Standard Azure Files configured with Locally Redundant Storage (LRS) using the NFS protocol.
  3. C
    Premium SSD Managed Disks configured with Locally Redundant Storage (LRS) using Azure Shared Disks.
  4. D
    Azure Blob Storage configured with Zone-Redundant Storage (ZRS) using NFS v3.0, with inactive files moved to the Archive tier.

Answer

Premium Azure Files configured with Zone-Redundant Storage (ZRS) using the NFS protocol.
Premium Azure Files configured with Zone-Redundant Storage (ZRS) using the NFS protocol is correct. Premium Azure Files natively supports NFS 4.1, which provides full POSIX-compliant locking. ZRS replicates data across three availability zones in the region, ensuring the storage survives a zone outage.

Step-by-Step Solution

1
Identify the protocol and locking requirements.
The application requires NFS and POSIX-compliant file locks. Premium Azure Files supports NFS 4.1, which meets this requirement.
Standard Azure Files does not support NFS, which eliminates options using that tier.
2
Determine the redundancy and performance requirements.
The solution must survive a zone outage (requiring Zone-Redundant Storage - ZRS) and maintain high performance (Premium tier).
This rules out options utilizing Locally Redundant Storage (LRS).
3
Evaluate the viability of lifecycle tiering.
Workloads with active file system access cannot use the Archive tier because the retrieval latency is too high.
This eliminates designs proposing Blob Storage with Archive tier lifecycle policies.

Key Concept

Selecting Azure Files Premium tier with ZRS for NFS and zone redundancy.
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Topics

Blob, File, and Disk Storage Solutions

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