Working architecture knowledge of data center networking and storage, including LAN and SAN design, leaf-spine architectures, VLAN/VRF and EVPN/VXLAN concepts, Fibre Channel, iSCSI, NFS, NVMe, multipathing, replication, and data protection platforms such as Veeam, Rubrik, or Commvault. Demonstrated experience assessing and migrating production workloads among VMware, OpenShift Virtualization, and Nutanix using disciplined discovery, dependency mapping, compatibility testing, pilot waves, data protection, maintenance-window planning, rollback, and operational handoff.