350-601 Storage Network Practice Question
An MDS switch is configured with VSANs 100 and 200. The engineer wants to isolate traffic between two storage arrays on the same physical fabric. Which best practice should be applied?
⚠ Common exam trap
Test-takers frequently confuse zoning with VSAN isolation, thinking that zones within a single VSAN provide the same level of separation, when in fact zones only restrict end-device communication while leaving fabric services and control traffic shared across the entire VSAN.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Place each array in a different VSAN.
VSANs provide complete isolation of traffic at Layer 2, creating separate fabric topologies within the same physical infrastructure. Placing each storage array in a different VSAN ensures that Fibre Channel frames from one array never reach the other, even though they share the same MDS switch hardware. This is the recommended best practice for separating storage traffic that must not interact.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use zones within the same VSAN to separate arrays.
Why it's wrong here
Zoning is per VSAN, but both arrays would be in the same VSAN if no VSAN separation.
- ✓
Place each array in a different VSAN.
Why this is correct
VSANs provide complete isolation.
- ✗
Enable QoS to prioritize storage traffic.
Why it's wrong here
QoS prioritizes but does not isolate.
- ✗
Configure a port channel between the switches.
Why it's wrong here
Port channels increase bandwidth but not isolation.
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