AWS Certified Solutions Architect - Associate
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A company has a Windows-based application that must be migrated to AWS. The application requires the use of a shared Windows file system attached to multiple Amazon EC2 Windows instances that are deployed across multiple Availability Zones.
What should a solutions architect do to meet this requirement?
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A
Configure AWS Storage Gateway in volume gateway mode. Mount the volume to each Windows instance.
B
Configure Amazon FSx for Windows File Server. Mount the Amazon FSx file system to each Windows instance.
C
Configure a file system by using Amazon Elastic File System (Amazon EFS). Mount the EFS file system to each Windows instance.
D
Configure an Amazon Elastic Block Store (Amazon EBS) volume with the required size. Attach each EC2 instance to the volume. Mount the file system within the volume to each Windows instance.
Explanation:
Explanation
Correct Answer: B - Configure Amazon FSx for Windows File Server. Mount the Amazon FSx file system to each Windows instance.
Why this is correct:
- Amazon FSx for Windows File Server is specifically designed for Windows-based applications that require shared file storage with Windows-native features like SMB protocol, Active Directory integration, and NTFS permissions.
- Multi-AZ deployment: Amazon FSx supports Multi-AZ deployments for high availability across multiple Availability Zones, which matches the requirement of EC2 instances deployed across multiple AZs.
- Windows compatibility: FSx provides fully managed Windows file servers that support the SMB protocol, which is native to Windows environments.
- Shared access: Multiple EC2 instances can simultaneously mount and access the same FSx file system.
Why other options are incorrect:
A. AWS Storage Gateway in volume gateway mode
- Storage Gateway is primarily for hybrid cloud scenarios, connecting on-premises environments to AWS storage.
- Volume gateway mode presents iSCSI volumes, not SMB file shares, which are required for Windows file sharing.
- Not designed for native AWS-to-AWS Windows file sharing between EC2 instances.
C. Amazon Elastic File System (Amazon EFS)
- EFS is designed for Linux-based applications using NFS protocol.
- Does not support Windows SMB protocol or Windows file system semantics.
- Not compatible with Windows-based applications.
D. Amazon EBS volume
- EBS volumes can only be attached to a single EC2 instance at a time in the same Availability Zone.
- Cannot be shared simultaneously across multiple EC2 instances.
- Does not support multi-AZ access or shared file system access.
Key AWS Services Comparison:
- Amazon FSx for Windows File Server: Managed Windows file servers with SMB protocol, Active Directory integration, Multi-AZ support.
- Amazon EFS: Managed NFS file system for Linux workloads.
- Amazon FSx for Lustre: High-performance file system for compute-intensive workloads.
- Amazon FSx for NetApp ONTAP: Enterprise-grade file system with advanced data management features.
For Windows-based applications requiring shared file storage across multiple EC2 instances in multiple Availability Zones, Amazon FSx for Windows File Server is the appropriate AWS service.
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