questions about beginning on Proxmox

[thierryb180381]

Hello,

For the moment, I've a Intel NUC D54250WYK with 8 Go Ram, 120 Go ssd with an Ubuntu at host OS (I used it mostly for my Plex server and I have an x2go server on it) and debian in a guest VM (for jeedom utilization) handled with kvm + libvirt. This computer is always on.

I wanted to create another VM just for testing but without altering existing performances so at this state, I was just thinking to completely change my configuration : install Proxmox at host, a VM Ubuntu + importing my existing Debian VM. I think it's the better configuration if I want to test a third VM for example.

I've several questions:
- the processor is enought powerful (Intel Core i5-4250U) to have several OS? I think it's espeially Plex <hich use my processor for transcoding but I will have only one instance of it I think (which could migrate between my VMs). I could extend my ram to 16 Go to be more confortable.

- As I don't want to leave my confort with my existing configuration, I was thinking about buying a cheaper intel nuc with processor intel Celeron N3050 / 1.6 GHz (2.16 GHz) (double cœur), 4 Go Ram, 120 Go ssd. Is it enough to do some test with one or 2 vms? so I could after migrate easyly.

- If I build a VM from the test nuc, to migrate it in the future Proxmox on my actual nuc, it will be easy? Nothing to change even if the host hardware changes?

Thanks

 

[thierryb180381]

Hello,

After one day using Proxmox, I begin to compare my test nuc Celeron with Proxmox and one VM started with ubuntu and my actual config with an host with ubuntu which use kvm and libvirt + 1 debian guest.

It seems that Proxmox use more ram (2,37 Go on 3,78 total) than my actual host (1,93 Go on 7,70 total).

Is it normal? Or maybe Proxmox will be more optimized when I will install it on my actual NUC? (for example, for VM creation, proxmox know the processor of my actual NUC which is an Haswell and doesn't know for my test nuc which is Braswell)

The advantage of Proxmox is it's very easy to create and manage VM compared to kvm / libvirt, but I thought that using Proxmox (which use an OS without gui) would be lighter than an host with Ubuntu mate + kvm/ libvirt no?

What do you think of that?

Thanks.

 

[vooze]

I think it makes sense that Proxmox uses som ram for what all it does. It is really not intended for small devices, but for servers with enough ram. I have 64 GB RAM is my server, so I don't really care if Proxmox uses 1,2 or 2.5 GB ram.. I would rather have it use some ram and have a lot of build in features (backup etc.)