VMware vSphere: Troubleshooting [V8] — Lesson 3: Standard and distributed networking, vmkernel services, VLANs, teaming, MTU, storage adapters, paths, VMFS, NFS, snapshots, and virtual-machine issues

Learning Objectives

• Identify the architecture and operational choices that shape Standard and distributed networking, vmkernel services, VLANs, teaming, MTU, storage adapters, paths, VMFS, NFS, snapshots, and virtual-machine issues.
• Run normal and boundary tests and record the outcome in network-storage path analysis and virtual-machine fault record.
• Separate root cause from symptom when investigating a datastore outage being caused by a network path rather than the storage array.

Detailed Topics

• Standard and distributed networking
• Vmkernel services
• VLANs
• Teaming
• MTU
• Storage adapters
• Paths
• VMFS
• NFS
• Snapshots
• And virtual-machine issues
• Decision ownership, prerequisites, and acceptance evidence for Standard and distributed networking, vmkernel services, VLANs, teaming, MTU, storage adapters, paths, VMFS, NFS, snapshots, and virtual-machine issues
• Relevant access, security, capacity, dependency, performance, recovery, and support considerations

Instructor Demonstration

The demonstration traces Standard and distributed networking, vmkernel services, VLANs, teaming, MTU, storage adapters, paths, VMFS, NFS, snapshots, and virtual-machine issues from requirement through execution and review. Learners see where evidence should be collected, how network-storage path analysis and virtual-machine fault record supports validation, and which warning signs require investigation.

Hands-On Exercise

Build or execute Standard and distributed networking, vmkernel services, VLANs, teaming, MTU, storage adapters, paths, VMFS, NFS, snapshots, and virtual-machine issues for a defined scenario. Introduce the condition “a datastore outage being caused by a network path rather than the storage array,” inspect the evidence, correct the cause without discarding the audit trail, and document the accepted state in network-storage path analysis and virtual-machine fault record.

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 Standard and distributed networking, vmkernel services, VLANs, teaming, MTU, storage adapters, paths, VMFS, NFS, snapshots, and virtual-machine issues.
• Compare at least two implementation or correction choices and identify which evidence would distinguish them.
• Decide how network-storage path analysis and virtual-machine fault record should be reviewed, approved, retained, and handed to the next owner.

Troubleshooting Guidance

Diagnose Standard and distributed networking, vmkernel services, VLANs, teaming, MTU, storage adapters, paths, VMFS, NFS, snapshots, and virtual-machine issues by checking effective state, ownership, dependencies, health, logs, and recent changes. Use network-storage path analysis and virtual-machine fault record to locate the earliest divergence. Treat “a datastore outage being caused by a network path rather than the storage array” as a hypothesis until the same test passes after correction and under a boundary condition.

Validation Checklist

• The requirement for Standard and distributed networking, vmkernel services, VLANs, teaming, MTU, storage adapters, paths, VMFS, NFS, snapshots, and virtual-machine issues is linked to an owner and observable acceptance condition.
• Network-storage path analysis and virtual-machine fault record 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 Standard and distributed networking, vmkernel services, VLANs, teaming, MTU, storage adapters, paths, VMFS, NFS, snapshots, and virtual-machine issues, explain the decisions made, and defend the result with network-storage path analysis and virtual-machine fault record.