Data Center Virtualization Foundations — Lesson 3: Virtual switches, port groups, VLANs, adapters, datastores, VMFS, NFS, SAN concepts, storage paths, and shared-resource dependencies

Learning Objectives

• Identify the architecture and operational choices that shape Virtual switches, port groups, VLANs, adapters, datastores, VMFS, NFS, SAN concepts, storage paths, and shared-resource dependencies.
• Run normal and boundary tests and record the outcome in basic connectivity map and datastore-access validation.
• Separate root cause from symptom when investigating a virtual machine attached to a port group carrying the wrong network segment.

Detailed Topics

• Virtual switches
• Port groups
• VLANs
• Adapters
• Datastores
• VMFS
• NFS
• SAN concepts
• Storage paths
• And shared-resource dependencies
• Decision ownership, prerequisites, and acceptance evidence for Virtual switches, port groups, VLANs, adapters, datastores, VMFS, NFS, SAN concepts, storage paths, and shared-resource dependencies
• Relevant access, security, capacity, dependency, performance, recovery, and support considerations

Instructor Demonstration

The demonstration traces Virtual switches, port groups, VLANs, adapters, datastores, VMFS, NFS, SAN concepts, storage paths, and shared-resource dependencies from requirement through execution and review. Learners see where evidence should be collected, how basic connectivity map and datastore-access validation supports validation, and which warning signs require investigation.

Hands-On Exercise

Build or execute Virtual switches, port groups, VLANs, adapters, datastores, VMFS, NFS, SAN concepts, storage paths, and shared-resource dependencies for a defined scenario. Introduce the condition “a virtual machine attached to a port group carrying the wrong network segment,” inspect the evidence, correct the cause without discarding the audit trail, and document the accepted state in basic connectivity map and datastore-access validation.

1. Confirm scope, access, sample workloads, and acceptance criteria.
2. Perform the configuration or operation using a controlled sequence.
3. Inspect outputs and downstream effects rather than relying on task status alone.
4. Close with a support note, preventive action, and reproducible validation step.

Scenario Analysis

• Clarify the service trigger, affected components and roles, prerequisites, and acceptable result for Virtual switches, port groups, VLANs, adapters, datastores, VMFS, NFS, SAN concepts, storage paths, and shared-resource dependencies.
• Compare at least two implementation or correction choices and identify which evidence would distinguish them.
• Decide how basic connectivity map and datastore-access validation should be reviewed, approved, retained, and handed to the next owner.

Troubleshooting Guidance

Diagnose Virtual switches, port groups, VLANs, adapters, datastores, VMFS, NFS, SAN concepts, storage paths, and shared-resource dependencies by checking effective state, ownership, dependencies, health, logs, and recent changes. Use basic connectivity map and datastore-access validation to locate the earliest divergence. Treat “a virtual machine attached to a port group carrying the wrong network segment” as a hypothesis until the same test passes after correction and under a boundary condition.

Validation Checklist

• The requirement for Virtual switches, port groups, VLANs, adapters, datastores, VMFS, NFS, SAN concepts, storage paths, and shared-resource dependencies is linked to an owner and observable acceptance condition.
• Basic connectivity map and datastore-access validation contains enough detail for another practitioner to repeat the check.
• Normal operation, one boundary condition, and the identified failure path have been tested.
• Access, security, downstream impact, rollback, monitoring, and support ownership are recorded.

Lesson Outcome

Learners can apply Virtual switches, port groups, VLANs, adapters, datastores, VMFS, NFS, SAN concepts, storage paths, and shared-resource dependencies, explain the decisions made, and defend the result with basic connectivity map and datastore-access validation.