CompTIA Cloud+ (CV0-004)Cloud ArchitectureMedium
A financial institution is deploying a new application that requires extremely low-latency access to its database and persistent storage for transactional data. The application experiences consistent, high I/O operations throughout the day. Which storage tier is most appropriate for this requirement?
- AObject Storage
- BArchive Storage
- CFile Storage
- DBlock Storage
Show answer & explanationAnswer & explanation
Correct answer: D. Block Storage
Block storage provides the lowest latency and highest performance for transactional databases and applications requiring frequent, granular I/O operations.
Why the other options are wrong
- A. Object storage is suitable for unstructured data, backups, and static content, not low-latency transactional databases.
- B. Archive storage is for long-term, infrequently accessed data with high retrieval latency.
- C. File storage is suitable for shared network drives and common file systems, but typically has higher latency than block storage for database workloads.
Block Storage
Block storage presents raw storage volumes to compute instances, allowing operating systems to format and manage them as traditional hard drives. It's ideal for databases and applications requiring high performance and low-latency I/O.
- Provides raw storage volumes
- Low latency, high IOPS
- Ideal for databases, boot volumes, and transactional workloads
- Managed at the block level by the OS
Memory trick: Block storage is like a fast, dedicated hard drive for your high-performance apps.