number of VM per server

Maher Khalil

Member
Jul 11, 2021
113
5
18
40
Hello
I got to know that in windows you can create only 64 VM per server and also in VMware you can assign only 128 Vcpu.
so, what is limitations in proxmox?
please note I talk only about KVM because it is not applicable for containers
 

SkyDiver79

Active Member
Aug 2, 2021
428
50
28
42
Damme, Germany
roesing-consulting.de
You can create unlimited VMs on every Hypervisor. In HyperV or ESXi, you have License Limitations for running VMs. But most your CPU limits more as the License.
Proxmox is open Source and have no limitations. Your Limit is your Hardware.
 

Maher Khalil

Member
Jul 11, 2021
113
5
18
40
but I read also in redhat website that maximum vCPUs is limited to 160 per physical server, is that because of license also?
 

Maher Khalil

Member
Jul 11, 2021
113
5
18
40
:)
so I can put any number of VMs on host provided that no. of VCPS = physical CPUs x (no. of threads x no. of cores)
and adequate no. of ram
am I right now?
 

Dunuin

Famous Member
Jun 30, 2020
4,293
934
143
Germany
:)
so I can put any number of VMs on host provided that no. of VCPS = physical CPUs x (no. of threads x no. of cores)
and adequate no. of ram
am I right now?
Jep.

I think I've read somewhere that Intel recommends for VT-d/VT-x to not use more than 8 vCPUs per 1 physical core.
 

spirit

Famous Member
Apr 2, 2010
5,324
521
133
www.odiso.com
I have some hosts with 40 physical cores, and 300vms with 2cores.

They are no technical limit of number of vms/cores vs number of physical cpus, but loadverage could grow even if you dont use too much cpu, because of context switches between the vm threads.
 

About

The Proxmox community has been around for many years and offers help and support for Proxmox VE, Proxmox Backup Server, and Proxmox Mail Gateway.
We think our community is one of the best thanks to people like you!

Get your subscription!

The Proxmox team works very hard to make sure you are running the best software and getting stable updates and security enhancements, as well as quick enterprise support. Tens of thousands of happy customers have a Proxmox subscription. Get your own in 60 seconds.

Buy now!