VMware vSAN: Plan and Deploy [V7] — Lesson 2: Cluster topology, host count, fault domains, stretched-cluster concepts, network bandwidth, VLANs, vmkernel design, MTU, multicast history, and connectivity validation

Learning Objectives

• Break down the prerequisites, components, roles, and decision points involved in Cluster topology, host count, fault domains, stretched-cluster concepts, network bandwidth, VLANs, vmkernel design, MTU, multicast history, and connectivity validation.
• Complete a controlled activity for Cluster topology, host count, fault domains, stretched-cluster concepts, network bandwidth, VLANs, vmkernel design, MTU, multicast history, and connectivity validation and capture vSAN network and failure-domain design.
• Challenge the result with an MTU assumption differing between host uplinks and the physical fabric, then justify the corrective action.

Detailed Topics

• Cluster topology
• Host count
• Fault domains
• Stretched-cluster concepts
• Network bandwidth
• VLANs
• Vmkernel design
• MTU
• Multicast history
• And connectivity validation
• Decision ownership, prerequisites, and acceptance evidence for Cluster topology, host count, fault domains, stretched-cluster concepts, network bandwidth, VLANs, vmkernel design, MTU, multicast history, and connectivity validation
• Relevant access, security, capacity, dependency, performance, recovery, and support considerations

Instructor Demonstration

The instructor configures and tests Cluster topology, host count, fault domains, stretched-cluster concepts, network bandwidth, VLANs, vmkernel design, MTU, multicast history, and connectivity validation within a scenario aimed at a defensible vSAN 7 plan and deployment that translates workload requirements into compatible hardware, network, capacity, availability, policy, and rollout decisions. The walkthrough contrasts a valid setup with a flawed one and uses vSAN network and failure-domain design to make the difference explicit.

Hands-On Exercise

Complete a guided task covering Cluster topology, host count, fault domains, stretched-cluster concepts, network bandwidth, VLANs, vmkernel design, MTU, multicast history, and connectivity validation. Establish a working baseline, reproduce “an MTU assumption differing between host uplinks and the physical fabric,” isolate the responsible configuration or dependency, apply a reversible fix, and update vSAN network and failure-domain design with before-and-after proof.

1. Record the starting state, assumptions, identities, topology, and expected outcome.
2. Execute the planned workflow and collect evidence at each material checkpoint.
3. Test one valid path, one boundary condition, and the stated failure scenario.
4. Document the correction, retest result, rollback option, and follow-up owner.

Scenario Analysis

• Clarify the service trigger, affected components and roles, prerequisites, and acceptable result for Cluster topology, host count, fault domains, stretched-cluster concepts, network bandwidth, VLANs, vmkernel design, MTU, multicast history, and connectivity validation.
• Compare at least two implementation or correction choices and identify which evidence would distinguish them.
• Decide how vSAN network and failure-domain design should be reviewed, approved, retained, and handed to the next owner.

Troubleshooting Guidance

Diagnose Cluster topology, host count, fault domains, stretched-cluster concepts, network bandwidth, VLANs, vmkernel design, MTU, multicast history, and connectivity validation by checking effective state, ownership, dependencies, health, logs, and recent changes. Use vSAN network and failure-domain design to locate the earliest divergence. Treat “an MTU assumption differing between host uplinks and the physical fabric” as a hypothesis until the same test passes after correction and under a boundary condition.

Validation Checklist

• Prerequisites and role permissions for Cluster topology, host count, fault domains, stretched-cluster concepts, network bandwidth, VLANs, vmkernel design, MTU, multicast history, and connectivity validation are confirmed before execution.
• The observed result agrees with expected values documented in vSAN network and failure-domain design.
• Exceptions are explained with evidence instead of being hidden by manual correction.
• The final record names the approver, monitoring point, and next improvement action.

Lesson Outcome

Learners can apply Cluster topology, host count, fault domains, stretched-cluster concepts, network bandwidth, VLANs, vmkernel design, MTU, multicast history, and connectivity validation, explain the decisions made, and defend the result with vSAN network and failure-domain design.