CompTIA Cloud Essentials+ (CLO-002)Cloud ConceptsMedium
A company is migrating its existing data warehouse to a cloud environment. The data warehouse stores petabytes of historical data that is infrequently accessed but must be retained for compliance and occasional analytical queries. Which cloud storage type is most cost-effective for this scenario while meeting the access requirements?
- AObject Storage
- BEphemeral Storage
- CFile Storage
- DBlock Storage
Show answer & explanationAnswer & explanation
Correct answer: A. Object Storage
Object storage is highly cost-effective for large amounts of unstructured data that is infrequently accessed, making it ideal for data archives, backups, and large data lakes like a data warehouse with historical, rarely accessed data. It provides high scalability and durability.
Why the other options are wrong
- B. Ephemeral storage is temporary storage tied to a compute instance's lifecycle and is unsuitable for persistent data retention.
- C. File storage is typically used for shared network drives and would not be cost-effective or scalable enough for petabytes of historical data.
- D. Block storage is optimized for high-performance, frequently accessed data, typically attached to compute instances, and would be too expensive for petabytes of archival data.
Object Storage
A cloud storage architecture that manages data as objects, identifiable by a unique key, within a flat address space, ideal for unstructured data at scale.
- Highly scalable and durable
- Cost-effective for large amounts of unstructured data
- Accessed via API, suitable for backups, archives, data lakes
Memory trick: Storage Types: Blocks for speed, Objects for scale, Files for sharing.