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The correct answer to this question is C: Create Multi-AZ Amazon FSx for NetApp ONTAP instances and volumes in each Region. Configure a scheduled SnapMirror relationship between the on-premises storage device and the FSx for ONTAP instances.
This solution best meets the requirements for several reasons:
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Compatibility: The company is currently using a NetApp ONTAP storage device on-premises. Amazon FSx for NetApp ONTAP provides a fully managed NetApp ONTAP file system in the cloud, ensuring compatibility with the existing setup.
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Multi-Region Support: The solution requires replication to four AWS Regions. FSx for NetApp ONTAP can be deployed in multiple regions, allowing for consistent storage across all required locations.
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Deduplication: FSx for NetApp ONTAP inherently supports deduplication, which is a specific requirement mentioned in the question.
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Up-to-date Data: The SnapMirror relationship between the on-premises storage and FSx for ONTAP instances ensures that data is always up to date. SnapMirror is a NetApp technology that provides efficient, incremental updates.
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Independence from On-premises Storage: Once the data is replicated to FSx for NetApp ONTAP, it's not dependent on the availability of the on-premises storage device.
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Read-only Access: FSx for NetApp ONTAP supports read-only volumes, which aligns with the current setup where developers access the shared applications in read-only mode.
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Scheduled Updates: The scheduled SnapMirror relationship can be configured to align with the weekly updates of the shared applications.
This solution provides a seamless transition from the on-premises NetApp environment to a hybrid cloud setup, maintaining compatibility, ensuring data consistency across regions, and meeting all the specified requirements for deduplication, up-to-date data, and independence from on-premises storage.
Sources
Data migration - AWS Prescriptive Guidance
AWS Storage Gateway Features | Amazon Web Services
AWS Storage Gateway - AWS Prescriptive Guidance
