Which storage deployment is typically used to provide storage for an entire private cloud in the data center?

• A. NAS
• B. SAN
• C. DAS
• D. Cloud storage

Answer: (B)

For a private cloud in a data center, you need a centralized, shared pool of fast, scalable storage that can be accessed by many servers as block storage. A Storage Area Network delivers exactly that by connecting compute hosts to a centralized storage fabric over a dedicated network and presenting volumes as LUNs to the servers. This setup lets you provision storage dynamically, scale capacity, and ensure high availability and consistency across multiple virtual machines and applications, which is essential for a private cloud environment.

Contrast this with file-level storage like NAS, which is great for shared documents but doesn't provide the low-latency, granular block storage that VMs and databases rely on. Direct-attached storage stays tied to a single server and isn’t easily shared or scaled for a multi-host private cloud. Cloud storage (offsite or object storage) is typically used for backups, archival, or overflow rather than the primary on-prem storage pool, due to differences in latency, control, and performance.

So, the typical deployment to provide storage for an entire private cloud is a Storage Area Network.