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Difficulty: MediumBlob, File, and Disk Storage Solutions

An organization is deploying a high-performance computing (HPC) application on Azure Linux Virtual Machines. The application requires a shared storage volume that supports the NFS v4.1 protocol and POSIX-compliant file system permissions. The storage must survive a zone failure within the primary Azure region while maintaining sub-millisecond latency. Which Azure storage configuration should you design to meet these requirements?

  1. Premium Azure Files configured with Zone-Redundant Storage (ZRS)Answer
  2. B
    Standard Azure Files configured with Geo-Redundant Storage (GRS)
  3. C
    Azure Blob Storage with NFS v4.1 enabled, configured with Locally Redundant Storage (LRS)
  4. D
    Azure Premium SSD managed disks with Locally Redundant Storage (LRS) shared via multi-write capability

Answer

Premium Azure Files configured with Zone-Redundant Storage (ZRS)
Premium Azure Files configured with Zone-Redundant Storage (ZRS) is the correct choice because it natively supports NFS v4.1, offers the necessary low latency for HPC workloads, and replicates data across three separate availability zones within the primary region to ensure service continuity during a zone failure.

Step-by-Step Solution

1
Identify the protocol and filesystem requirements.
The application requires NFS v4.1 and POSIX-compliant permissions, which are supported by Premium Azure Files and Azure Blob Storage (with NFS v4.1 enabled). Standard Azure Files is ruled out as it does not support NFS v4.1.
NFS v4.1 support in Azure Files is exclusive to the Premium tier.
2
Evaluate the resiliency requirement.
The storage must survive a zone failure within the primary region, which necessitates Zone-Redundant Storage (ZRS). Locally Redundant Storage (LRS) options are ruled out because they only replicate data within a single datacenter.
ZRS replicates data synchronously across three availability zones in the primary region.
3
Select the option that meets all performance, protocol, and redundancy requirements.
Premium Azure Files with ZRS provides NFS v4.1 support, sub-millisecond/single-digit millisecond latency, and zone-redundant resiliency.
This configuration satisfies all technical constraints without introducing operational overhead.

Key Concept

Selecting Azure Files tiers and redundancy configurations based on protocol, latency, and high availability requirements.
Estimated Time:1m 30s
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Topics

Blob, File, and Disk Storage Solutions

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