AWS Certified Solutions Architect - Associate
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A company has an on-premises volume backup solution that has reached its end of life. The company wants to use AWS as part of a new backup solution and wants to maintain local access to all the data while it is backed up on AWS. The company wants to ensure that the data backed up on AWS is automatically and securely transferred.
Which solution meets these requirements?
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UAnonymous
A
Use AWS Snowball to migrate data out of the on-premises solution to Amazon S3. Configure on-premises systems to mount the Snowball S3 endpoint to provide local access to the data.
B
Use AWS Snowball Edge to migrate data out of the on-premises solution to Amazon S3. Use the Snowball Edge file interface to provide on-premises systems with local access to the data.
C
Use AWS Storage Gateway and configure a cached volume gateway. Run the Storage Gateway software appliance on premises and configure a percentage of data to cache locally. Mount the gateway storage volumes to provide local access to the data.
D
Use AWS Storage Gateway and configure a stored volume gateway. Run the Storage Gateway software appliance on premises and map the gateway storage volumes to on-premises storage. Mount the gateway storage volumes to provide local access to the data.
Explanation:
Explanation
Correct Answer: D
Why Option D is correct:
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AWS Storage Gateway Stored Volume Gateway is specifically designed for this use case:
- It stores the primary data locally on-premises
- Asynchronously backs up point-in-time snapshots to Amazon S3
- Provides low-latency access to the entire dataset locally
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Key requirements met:
- Maintain local access to all data: The stored volume gateway keeps all data locally on-premises
- Data backed up on AWS: Snapshots are automatically transferred to Amazon S3
- Automatically and securely transferred: Data is encrypted in transit and at rest
- Continuous operation: The solution works as an ongoing backup solution, not just a one-time migration
Why other options are incorrect:
Option A (AWS Snowball):
- Snowball is for one-time data migration, not ongoing backup solutions
- Cannot provide continuous local access after migration
- Not designed for ongoing backup operations
Option B (AWS Snowball Edge):
- Similar to Snowball, designed for data transfer, not ongoing backup
- File interface is temporary during migration
- Not suitable for continuous backup operations
Option C (Cached Volume Gateway):
- Stores primary data in Amazon S3, caches frequently accessed data locally
- Does NOT maintain local access to ALL data (only cached subset)
- Opposite of what's needed - stores primary in cloud, caches locally
Key Distinction:
- Stored Volume Gateway: Primary data local, backups to AWS
- Cached Volume Gateway: Primary data in AWS, frequently accessed data cached locally
The stored volume gateway is the correct choice because it maintains the complete dataset locally while providing automated, secure backup to AWS.
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