MIgrating from ESXi 6: resource allocation

A

amiga

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Mar 10, 2016
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Hi,

recently I built a new solution for my (personal and working) needs based on Supermicro A1SRM-2758 (8 core at 2,4Ghz), with 16GB RAM and SSD 256GB.

Actually I used ESXI 6 and I created two VMs, one with OPNSense Firewall (a fork from PFSense, based on FreeBSD 10) and another one with Ubuntu Server 15.

Now I discovered Proxmox VE and I found it very interesting but, before doing some tests, I would like to ask some questions, especially related to performances.

First of all, with ESXI 6 I hate the loss of resources (not related to single VM): in my case ESXi give me a total capacity significantly lower than the physical one.

I have 8x2,4Ghz=19.200MHz and 16GB RAM: ESXi give me a total capacity (regardless of VM's number and typology) of CPU 16.200MHz and 12GB RAM.

I lost 1 CPU core and 4 GB RAM: with Proxmox will be different?

Second question is related to AES-NI instructions sets inside a VM: I read that with cpu=host setting, is possible to use these instructions inside a VM. It's correct?

Last question: it's possible to install Proxmox inside a ESXI VM? (this is useful only to do some initial tests)

Thanks in advance
 
1) Of course the hypervisor itself will need resources too, but this is not as bad as it is with VMware. Normally less than 1 GB of RAM and it shares the CPU.

2) Technically and probably yes, but I never tried it with AES-NI instructions. Although, I used other extensions.

3) Yes, it you enable nested virtualization it should work. Without this, you can only create containers - but please refer to https://pve.proxmox.com/wiki/Nested_Virtualization#Nested_PVE
 
Thanks for your reply.

I installed PVE on a ESXi VM and works.

But now to evaluate PVE performances and resource allocation I must to destroy ESXi and to install PVE on bare metal (and VMs).

It's possible to migrate ESX VMs or is better to reinstall everything?

Alex
 
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