The marketing, research, and business departments of a company each have servers and storage in the SAN fabric connected to a Cisco MDS switch. The storage engineer is asked to ensure that each…

Creating multiple VSANs, such as VSAN 10, 11, and 12, on the Cisco MDS switch establishes the necessary logical segmentation for each department. Each VSAN acts as an independent fabric, ensuring that devices within one VSAN cannot communicate with devices in another.

Assigning marketing devices to VSAN 10, research devices to VSAN 11, and business devices to VSAN 12 explicitly places each department's servers and storage into their respective isolated logical fabrics. This step directly implements the isolation desired by the question.

Creating only one VSAN (VSAN 10) does not provide the logical separation needed to isolate multiple departments from each other.

Adding all departments' devices to a single VSAN (VSAN 10) would result in all devices being in the same fabric, which directly contradicts the requirement for isolation between departments.

Creating only two VSANs (VSAN 10 and VSAN 11) is insufficient for isolating three distinct departments, as at least one department would have to share a VSAN or be left out.

Assigning all storage devices to one VSAN and all server devices to another VSAN isolates servers from storage globally but does not isolate individual departments' servers and storage from each other.