Proxmox Backup Server

Installing a Proxmox backup server is quite easy. The official documentation says you only need 4GB of RAM plus 1GB for every TB of storage. Here are some sample calculations based on that advice:

Install the software in a server then:

1. Change the software repository to the free one, if you do not have a subscription. Proxmox reference is here.
   • change https to http
   • change enterprise to download
   • change pve-enterprise at the end of the line to pve-no-subscription
2. Open the GUI
3. Click on Access Control
4. Add a user.
5. At the bottom of the menu click on Add a Datastore
6. After you have created it, click on its name, which should be just above the Add option
7. Set the user to the name of the user you created and give them full permission

In the ProxMox PVE control panel:

1. Click on Datacentre at the top of the server tree
2. Click on Storage in the menu to the right of that
3. Click Add and choose ProxMox Backup Server at the bottom of the list
4. The ID field can be whatever you like, at least two characters, beginning with a letter.
5. For the Server field put the DNS name or IP address of the backup server.
6. Put the user name plus domain in the Username field. You will find this shown on the backup server's data store page. If you created the user admin then it is probably admin@pbs.
7. In the Datastore field put the name you assigned to the storage.
8. Click save.

Now when you go to backup a VM you can choose between local storage and the data store name you created.

Upgrading the backup server is fairly straightforward and can even be done while the server is live (though it is better to put into maintenance mode).

Instructions for upgrading from v2 to v3 are found on the Proxmox web site.