Which statement is NOT a limitation of DAS compared with SAN?

• A. Poor scalability.
• B. Large investment.
• C. Difficult resource sharing.
• D. Decentralized management.

Answer: (B)

When comparing DAS with SAN, the important idea is how storage is shared and managed across servers. DAS is directly attached to a single server, so it’s typically cheaper upfront but harder to scale, share, and manage from a central point.

The limitations you’d expect with DAS relative to SAN are poor scalability, more difficult resource sharing, and decentralized management. In a DAS setup, adding storage to support more hosts isn’t straightforward, sharing storage across multiple servers isn’t built-in, and each server tends to manage its own disks separately.

Large investment, on the other hand, is more characteristic of SAN. A SAN involves a shared storage network with switches, HBAs, and storage arrays, which usually requires a higher upfront cost. So the statement about a large investment is not a limitation of DAS, making it the correct choice for this question.