Thanks for your support, I’m happy you help me and maybe others here with this useful information.
I now have added 32gb ram and a 1TB sata ssd disk into a Lenovo Thinkcentre with AMD Ryzen3 pro machine.
I’ve installed Proxmox but then I was thinking. I still have the standard SATA SSD 256gb disk from this machine and I want to use the max from it. I was thinking of adding another 1TB SATA SSD disk in this machine because it is possible to install 3 disks.
I want to do Proxmox backups, create HA OS vm and some others maybe and I have my first HP Desktop with Proxmox and HA OS vm running now with OpenMediaVault on it too and this machine has 6TB.
A luxe problem haha.
How would you configure both machines to first have a quick HA replication if 1 of the machines would fail?
And where would you configure the Proxmox backup vm on?
So if they are in a cluster then they can communicate with eachother, correct? I should create the cluster on both Proxmox machines?
At least keep the backups away from the same storage media that it is running on. You don’t want both your vms and backups to fail if a drive fails. For more important data like photos and so on you want to keep them multiple places, preferably off site too (cloud for example).
Don’t just shove stuff in the machine because you have stuff available. Have a plan for it. That is what boxes (cardboard/plastic) are for. I have plenty
PVE clusters can’t really communicate with each other. Well, kind of.
First, the nicety of a cluster is you can control them all from one login.
If you log into any of the nodes, you can act on all of the nodes in one place.
Google setting up PVE cluster. Too much to type here. It is not hard.
PVE cluster nodes do not really interact with each other unless you make them act. You can migrate a guest from one node to another with just a couple clicks. It basically does a backup then restores it to the node you tell it.
As far as communicating with each other, you can find out which node a guest is on in a bash script. And, you can shutdown and restart any guest from any node in a script. But, that is about it.
For replication, you need to have ZFS file systems setup. I do not do that. For automatic moving from one node to another, you need High Availability. I do not do that either. You can Google both of those to find guides if you decide you need to go that path.
I just make sure I have enough backups that I am comfortable losing data. For example, I do not care about a bunch of history data in Home Assistant. I know this is a big thing for may people that monitor electrical usage and such.
I can bring a guest back to life on another node from a nightly backup and be happy with that. Of course, I have HA backups from updates. So, I can roll back a small bit if needed if something fails.
So, here is my opinion, I hope others chime in …
‘data’ disks should be on a NAS. Those should be available from all nodes.
People using High Availability and ZFS should and hopefully will reply here.
For my setup, no to your question. Your 1tb should be the only disk in the PVE node. Each node should have that minimum. That allows your backups to be restored.
For me, guests that need ‘data’ disks are Plex, jellyfin, etc. Those disks should be on a NAS, SAN, etc.
Again, I do not replicate for nodes and I only backup for quick restoration.
If you do what you are asking on one node, then you need to do it on all nodes. I believe that will make your setup less easy to deal with if issues happen.
I have my Synology NAS with 8TB running in the network and yesterday evening I made a NFS sharefolder named Proxmox on this NAS which is now available for both nodes, this works, I can access this folder.
But is it maybe better to add another sharefolder in my Synology with this setup ;
I already made a backup this night with Proxmox itself to the Synology NFS share but I’m planning to create Proxmox Backup Server on a VM to do the backups to the SCSI share on the Synology?
I have Plex server running on my Synology and the media is also stored there but maybe it is better to install a Plex server LXC on a node which streams the media from the Synologydrive and so I do not strain the Synology?
I’m also still looking for a music media server which can stream my music from the Synology to the devices and also possible to use with HomeAssistant
