FSx for Windows File Server Multi-AZ Resiliency
A company is migrating its production file server to AWS. All data that is stored on the file server must remain accessible if an Availability Zone becomes unavailable or when system maintenance is performed. Users must be able to interact with the file server through the SMB protocol Users also must have the ability to manage file permissions by using Windows ACLs. Which solution will meet these requirements?
Community Insight
This question tests the ability to select a storage service that natively supports SMB, Windows ACLs, and automatic cross-AZ replication without manual configuration.
Amazon FSx for Windows File Server provides a fully managed native Windows file share with SMB support and Active Directory integration. Deploying in Multi-AZ mode ensures high availability across Availability Zones.
Many candidates incorrectly choose AWS Storage Gateway because it bridges on-premises protocols to S3, but it lacks built-in Multi-AZ resilience and cannot route SMB through an Application Load Balancer.
Community Discussion (2 comments)
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Expert Analysis
Why the Answer Is Correct
Amazon FSx for Windows File Server is designed specifically to replace on-premises Windows file servers. It natively supports the SMB protocol and Windows ACLs. By deploying the file system in Multi-AZ mode, AWS automatically replicates data across two Availability Zones within the same region, ensuring that the data remains accessible even if one AZ becomes unavailable or undergoes maintenance.Why the Other Options Are Wrong
Option A is incorrect because a single Storage Gateway is typically deployed in one location and does not offer built-in Multi-AZ redundancy. Option C is incorrect because an Application Load Balancer (ALB) operates at Layer 7 (HTTP/HTTPS) and cannot load balance SMB traffic, which runs over TCP ports 445/139. Option D involves DFSR, which adds significant complexity and latency compared to the native, synchronous replication provided by FSx Multi-Az.Community Comment Notes
As BAL007RAJ noted, "Windows file share + SMB + Active Directory/ACLs = FSx for Windows." Another user, Derel1ct, emphasized that "An ALB is designed specifically for HTTP/S traffic, it can't route SMB traffic," highlighting why option C fails technically.Exam Strategy
When a question requires both SMB access and high availability across zones, look for Amazon FSx for Windows File Server configured in Multi-AZ. Avoid solutions involving ALBs for non-HTTP protocols or complex replication tools like DFSR when a managed service offers native resiliency.
Frequently Asked Questions
Can I use an Application Load Balancer for SMB traffic?
No, ALBs only support HTTP/HTTPS traffic. SMB uses different ports and protocols not supported by standard load balancers.
Why is Storage Gateway not suitable for this scenario?
Storage Gateway primarily caches data locally and stores it in S3; it does not offer native Multi-AZ redundancy for the gateway instance itself.
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