VMware migration requirements

Before migrating virtual machines from VMware vSphere, make sure that the VMware environment and source virtual machines meet the following requirements.

VMware connectivity requirements

When VMware vCenter is used as the migration source, the migration service connects directly to the selected ESXi hosts for disk transfer operations. Connectivity to vCenter alone is not sufficient.

  • All ESXi hosts selected as migration sources and the vCenter server, if used, are reachable from the Virtuozzo Infrastructure cluster.
  • TCP ports 443 and 902 are open between the Virtuozzo Infrastructure cluster and all ESXi hosts selected as migration sources. If vCenter is used, TCP port 443 must also be open to the vCenter server.
  • DNS resolution and routing are configured correctly for all ESXi hosts. If ESXi hosts cannot be resolved through DNS, add the required host entries to /etc/hosts on the cluster nodes.

Source VM requirements

  • The guest operating system and migration options are listed as supported in Supported migration configurations.
  • VMware Tools is installed and up to date on all source VMs. VMware Tools is required for collecting guest network information and creating quiesced snapshots of running VMs.
  • Source VM disks use Changed Block Tracking (CBT)-compatible storage, such as VMFS or NFS.
  • VM disks are not in Independent mode.
  • VM disks are not encrypted with BitLocker, LUKS, or similar disk encryption software.
  • Security software does not block access to the boot loader or disks. This includes VMware AppDefense Guest Integrity and antivirus or endpoint protection products such as Acronis, Kaspersky, vShield, Symantec, McAfee, and CrowdStrike.
  • Linux VMs have a working package manager configuration. To verify that package repositories are accessible, run apt update on Debian-based distributions or yum repolist or dnf repolist on RHEL-based distributions.
  • Linux VMs with static IP addresses store their network configuration in supported configuration files, such as Netplan or NetworkManager profiles.
  • Linux VMs based on Oracle Linux, Red Hat Enterprise Linux, or CentOS have at least 500 MB of free space on the /boot partition.

If a Linux VM uses LVM volumes spanning multiple physical volumes (PVs), verify the disk layout before migration and make sure that the selected target flavor can boot from this disk layout:

lsblk -f