Snapshots capture VM state instantly. Cloning creates identical copies — linked clones take seconds, full clones take minutes.
qm snapshot 100 pre-update --description "Before update" --vmstate 1
qm listsnapshot 100
qm rollback 100 pre-update
qm clone 100 101 --name copy --full 1
Convert a configured VM into a template with
qm template 100 to enable instant linked clone deployment for rapid VM provisioning.