A field office needs block storage for a legacy application but wants to avoid buying a full on-premises disk array for mostly cold data. Which hybrid approach best minimizes local disk purchase while using Amazon S3 as durable backing store?
Select an answer to reveal the explanation.
Short Explanation
Cached volumes are like a desk drawer for today’s folders while the warehouse holds everything else in S3. You buy less local disk and still feed the legacy block app. Full SANs everywhere, Deep Archive without a cache, or raw S3 REST to a block app miss that hybrid cost trick.
Full Explanation
Storage Gateway cached volume mode retains frequently accessed data in a local cache while storing the authoritative data in Amazon S3, reducing on-premises capacity purchases for cold bulk. Buying full SANs at every site maximizes capital cost. Deep Archive without an appropriate access path and protocol mismatch (block app to raw S3 APIs) are poor fits. Cached volumes are the cost-optimized hybrid pattern described.