Storage vMotion moves a virtual machine's configuration file, and, optionally, its disks, while the virtual machine is running. You can perform Storage vMotion tasks from the vSphere Web Client or with the svmotion command.
Important: No ESXCLI command for Storage vMotion is available.
You can place the virtual machine and all of its disks in a single location, or choose separate locations for the virtual machine configuration file and each virtual disk. You cannot change the virtual machine's execution host during a migration with svmotion.