VMware → OpenShift Virtualization – 20-Month Migration

22,000

Total VMs

100 %

Thin Storage

20

Months

GitOps

CI/CD

Migration Waves
MonthWaveEnvVMsSizeOutcomeFreeze

  • StorageClass hitachi-thin-block is marked cluster default.
  • GitLab CI renders PVC size & attaches to KubeVirt template.
  • CSI driver tells Hitachi array to create thin LUN (0 GiB physical at birth).
  • Prometheus rule alerts when thin-pool utilisation >80 %.
  • Online resize works: kubectl patch pvc ...
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