VMware vSAN: Troubleshooting [V8]

Course Description

VMware vSAN: Troubleshooting [V8] develops hands-on understanding of vSAN troubleshooting methodology, architecture refresh, Skyline Health, alarms, Network partitioning, vmkernel configuration, multicast legacy considerations. Learners move from requirements and dependencies to implementation, validation, troubleshooting, and supportable VMware operations.

Later lessons examine Disk groups, device failures, controller state, capacity pressure, Performance bottlenecks, maintenance modes, upgrades. Participants use vSAN incident baseline and object-health evidence pack, vSAN network diagnostic matrix and packet evidence, component-state timeline and repair decision record, performance root-cause report and safe-maintenance runbook to distinguish configuration, access, network, storage, performance, and lifecycle issues rather than treating them as one generic failure.

After the four lessons, learners can help establish a structured vSAN troubleshooting capability that preserves data availability while diagnosing network, disk, object, policy, capacity, resynchronization, and performance problems. They also document follow-up actions for performance, security, lifecycle, support, and adoption.

What You Will Learn

• Explain how vSAN troubleshooting methodology, architecture refresh, and Skyline Health establish the technical foundation and influence later design decisions.
• Configure alarms, logs, support insights, performance service, object health, and evidence collection, then confirm readiness through vSAN incident baseline and object-health evidence pack instead of relying on completion messages alone.
• Execute a controlled workflow covering Network partitioning, vmkernel configuration, and multicast legacy considerations, preserving prerequisites, changes, and resulting service behavior.
• Read vSAN network diagnostic matrix and packet evidence to isolate inconsistent MTU causing intermittent resynchronization stalls, separate symptoms from causes, and choose a correction that can be safely retested.
• Integrate Disk groups, device failures, and controller state with access, capacity, resilience, and downstream operational expectations.
• Challenge capacity pressure, component state, absent and degraded objects, policy compliance, and resynchronization behavior using normal and boundary cases, then defend the outcome with component-state timeline and repair decision record.
• Investigate maintenance entering full data migration when available capacity cannot sustain it by reviewing Performance bottlenecks, maintenance modes, and upgrades before applying a reversible fix.
• Prepare performance root-cause report and safe-maintenance runbook that demonstrates data evacuation, support bundles, escalation, root-cause reporting, preventive controls, and closure and supports handover, monitoring, governance, and the next improvement decision.

SkillDynamo Training Approach

Training uses instructor walkthroughs, hands-on implementation, role-based exercises, boundary testing, troubleshooting drills, review checkpoints, and structured handover. Learners practise explaining why a result is acceptable rather than merely showing that a task completed.