Synology Virtual Machine Manager Pro license – 7 Node – 5 Year Subscription ( License PDF )

Each VMM cluster can consist of at most seven Synology NAS. Licenses cannot be refunded once activated.
Before purchasing licenses, please ensure that your Synology NAS supports VMM.
Each license can only be used for one Synology VMM cluster at a time.
Purchased licenses can be migrated.
License periods cannot be extended by activating multiple licenses at once.