Proxmox VE

Licensing terms

Proxmox VE software licensing terms, using the GNU AGPL (Affero General Public License) terms, while Proxmox VE Free Software itself is free software, open source software is also Open Source Software.

updated version

Similarly, you can use the software without having PVE pay, no doubt. In addition to the login screen appears outside you do not have to pay license key, and use them without any restrictions and functional differences.
However, if you need to update your version of PVE in the use, you may encounter problems:
because the default installation of PVE is connected to the update source Enterprise Repository, and you do not get paid license key and therefore can not be updated.
The solution is easy, you can switch to renewable sources PVE No-Subscription Repository or Test Repository, you can successfully updated.
vi /etc/apt/sources.list switching update source for No-Subscription Repository

deb http://download.proxmox.com/debian/pve stretch pve-no-subscription

The Enterprise Repository and then had to cancel, vi /etc/apt/sources.list.d/pve-enterprise.list it endorsed
cancel Enterprise Repository update source

# deb https://enterprise.proxmox.com/debian/pve stretch pve-enterprise

These three sources of update difference, as follows:

Enterprise Repository
default update source, to obtain payment authorization and update key customer use. The update source is characterized with the most stable version, it has formally launched for the environment.
No-Subscription Repository
name suggests, this update source without authorization keys can be used to update the payment. The official suggested that this update source used in the test environment and non-formally launched, as part of the package may not have been through extensive testing and validation. But in my experience, it is very stable.
Test Repository
This update source contains the latest version of the suite package, a large number of development teams use it to test new features. This update only the best sources for testing or debugging features new, never used in official environment.

Service Model

If you want to use Enterprise Repository as an update source, the original or need technical support, you need to pay to get the associated piping and services.
Enterprise four levels can be used to update the source, all the functional, technical support, differences in part as follows:
PREMIUM
provide dedicated customer support service window
does not limit the number of requests technical support
provided in the response speed of the work day two hours
to provide remote technical support ssh
STANDARD
provide dedicated customer support service window
10 times a year technical support requests
to provide responsiveness within 4 hours work day
to provide remote technical support ssh
BASIC
provide dedicated customer support service window
three times a year technical support requests
to provide a response within a day of work day speed
cOMMUNITY
official community as a technical support