Expert-level understanding of Logical Volume Manager (LVM), including physical volumes, volume groups, logical volumes, LVM snapshots, volume group migrations (vgexport/vgimport), thin provisioning, and LVM-based backup and restore strategies. This includes planning and executing migrations of ESXi hosts and virtual machines, managing iSCSI storage network configurations, working with LVM (Logical Volume Manager) for storage provisioning and migration, and ensuring seamless cutover with minimal downtime.