Proxmox Backup Server Premium

+ Access to Enterprise Repository
+ Stable software updates
+ Support via customer portal
+ Unlimited support tickets
+ Response time 2 hours within a business day (on critical support requests)
+ Remote support (via SSH)

Subscription period is one year from purchase date.
Each Proxmox Backup Server needs a subscription.

All details here

You can read about this and other PROXMOX products here

Contents of delivery:
✔ distribution Proxmox Backup Server (media or download link from the Internet)
✔ subscription key (in electronic form)
✔ subscription key (on paper form)