Exam AWS Certified Solutions Architect - Associate SAA-C03 topic 1 question 307 discussion

AWS Storage Gateway Volume Gateway provides two configurations for connecting to iSCSI storage, namely, stored volumes and cached volumes. The stored volume configuration stores the entire data set on-premises and asynchronously backs up the data to AWS. The cached volume configuration stores recently accessed data on-premises, and the remaining data is stored in Amazon S3. Since the company wants only its recently accessed data to remain stored locally, the cached volume configuration would be the most appropriate. It allows the company to keep frequently accessed data on-premises and reduce the need for scaling its iSCSI storage while still providing access to all data through the AWS cloud. This configuration also provides low-latency access to frequently accessed data and cost-effective off-site backups for less frequently accessed data.

https://docs.amazonaws.cn/en_us/storagegateway/latest/vgw/StorageGatewayConcepts.html#storage-gateway-cached-concepts

Frequently accessed data = AWS Storage Gateway Volume Gateway cached volumes

The best AWS solution to meet the requirements is to use AWS Storage Gateway cached volumes (option D). The key points: Company migrating on-prem app servers to AWS Want to minimize scaling on-prem iSCSI storage Only recent data should remain on-premises The AWS Storage Gateway cached volumes allow the company to connect their on-premises iSCSI storage to AWS cloud storage. It stores frequently accessed data locally in the cache for low-latency access, while older data is stored in AWS.

• Volume Gateway cached volumes store entire datasets on S3, while keeping a portion of recently accessed data on your local storage as a cache. This meets the goal of minimizing on-premises storage needs while keeping hot data local. • The cache provides low-latency access to your frequently accessed data, while long-term retention of the entire dataset is provided durable and cost-effective in S3. • You get virtually unlimited storage on S3 for your infrequently accessed data, while controlling the amount of local storage used for cache. This simplifies on-premises storage scaling. • Volume Gateway cached volumes support iSCSI connections from on-premises application servers, allowing a seamless migration experience. Servers access local cache and S3 storage volumes as iSCSI LUNs.

I vote D

Agree with D

recently accessed data to remain stored locally - cached

D. AWS Storage Gateway Volume Gateway cached volumes

recently accessed data to remain stored locally - cached