CompTIA Cloud Essentials+ (CLO-002)Cloud ConceptsMedium
A company is migrating its legacy on-premises application to a public cloud. The application requires dedicated, high-performance storage that can be directly attached to a virtual machine and offers very low latency for database operations. Which type of cloud storage would best meet these requirements?
- ABlock Storage
- BArchive Storage
- CObject Storage
- DFile Storage
Show answer & explanationAnswer & explanation
Correct answer: A. Block Storage
Block storage provides raw, unformatted volumes that can be attached to virtual machines, offering high performance and low latency, making it ideal for database operations and operating system boots.
Why the other options are wrong
- B. Archive storage is for long-term, infrequently accessed data, optimized for cost over performance, unsuitable for active databases.
- C. Object storage is highly scalable and cost-effective for unstructured data, but not suitable for low-latency, directly attached database volumes.
- D. File storage is accessed via network file protocols (like NFS/SMB) and is better for shared file systems, not direct, low-latency database access.
Block Storage
A type of storage that breaks data into uniformly sized blocks, each with a unique address, allowing for efficient, high-performance access. It is often used for virtual machine boot volumes and databases.
- Presented as raw, unformatted disks to an operating system.
- Offers high performance and low latency.
- Ideal for databases, boot volumes, and transactional workloads.
Memory trick: Blocks for speed, Objects for scale, Files for sharing.