I85PREP
⌘ K
Dell VxRail Operate study materials
Dell VxRail Operate study resources

Dell VxRail Operate: VxRail Troubleshooting and Recovery

Dell VxRail Operate · Work through your exam, one topic at a time.

All guide sections

VxRail Troubleshooting and Recovery

Troubleshooting items are structured: identify the layer (hardware/iDRAC, ESXi, vSAN, VxRail Manager, vCenter/plugin), collect the right evidence, then recover without destroying data. Recovery questions focus on what is restorable and in what order.

Triage order

  • Establish scope: one host, one disk, the whole vSAN cluster, or only the VxRail UI. A missing VxRail tab with healthy VMs is a plugin/VxRail Manager problem, not a data problem.
  • Collect evidence: VxRail support bundle (cluster and VxRail Manager state), ESXi vm-support per host, iDRAC SupportAssist for hardware.
  • Check vSAN health first for anything data-related; it separates "degraded but safe" from "at risk".

Common failure patterns

  • Plugin missing after a vCenter change: VxRail Manager service or plugin registration, not the cluster.
  • VxRail Manager VM out of disk or with stopped services: plugin and lifecycle operations fail while workloads keep running.
  • Certificate or NTP problems blocking SSO, deployment and upgrades.
  • A disk marked failed or a host "not responding": vSAN resync begins; replace the component and let resync complete before further maintenance.
  • Witness unreachable in two-node or stretched clusters: quorum risk and possible data inaccessibility.

Recovery rules

  • VxRail Manager is restored from its configured external backup (SFTP/FTP). Without a backup, recovery means redeploying the VxRail Manager VM and re-registering the plugin - which is why backup configuration is a day-one task.
  • ESXi on a node is reinstalled via iDRAC virtual media and the host is re-added; vSAN rebuilds its components.
  • Decommission uses a controlled removal procedure, not wiping disks on a live node.

Worked example

After a vCenter restart the VxRail tab disappears, but every VM is fine. Reasoning: workloads and vSAN do not depend on the plugin; the plugin depends on VxRail Manager being reachable and registered with vCenter. Verify the VxRail Manager VM power state and services, confirm DNS and time, then re-register or restart the VxRail Manager service. Do not touch the ESXi hosts - nothing is wrong there, and host maintenance adds risk for no benefit.

Traps that cost marks

  • Restarting or redeploying VxRail Manager during an in-progress upgrade.
  • Using no-data-migration maintenance mode when a failure has already reduced redundancy.
  • Treating a degraded vSAN state as data loss.