What CLI command restores entire volume from a snapshot copy:

The 'volume snapshot restore' command in this context is associated with restoring individual files or LUNs from a snapshot rather than promoting a snapshot to replace the entire active volume.

The 'volume snapshot promote' command makes a designated snapshot the new active (writable) volume, effectively performing a full volume revert to the state captured in that snapshot. This is used when a complete volume restore is needed, as it replaces the entire active file system with the snapshot's contents. It is a destructive operation that discards any data written after the snapshot was taken.

'Volume snapmirror restore' is not a valid ONTAP CLI command for local snapshot-based volume recovery operations.

'Volume snapmirror resync' re-establishes a broken SnapMirror replication relationship between source and destination volumes and does not perform a local snapshot-based volume restore.