Proxmox Hypervisor, vCPU, RAM... etc

[techlists at phpcoderusa.com]

That sounds scary.

Ok, so I am coming away with a vCPU is = to a thread.  RAM  is fixed.  I 
read Proxmox requires 2GB of RAM and I was unable to determine the 
number of cores for Proxmox.

Proxmox says you will need Intel EMT64 or AMD64 with Intel VT/AMD-V CPU 
flag.

They suggest SSD disks, and redundant Gbit NICs.  I assume along these 
lines you would want redundant power supplies.

Another Question :

I have a Cox business connection that allows me to run servers and to be 
allocated more than 1 static IP.

I can see me configuring at least 4 virtual machines for LAMP - PHP 
testing and development, and a VM for a real website.  Not all of these 
VMs would be active at once.

Since I would be running this out of my home office, to be safe, I would 
need enough RAM to allocate 4GB of RAM of reach _active_ VM and 2 vCPUs, 
and to be safe maybe 4GB of ram and 2 cores for Proxmox.

For 4 simultaneously active VMs I would need 8vCPUs (8 threads) and 4GB 
of RAM each or 16GB of RAM.  Add to that 2 Cores/4 threads and 4GB of 
RAM for Proxmox and I would need 12 threads or 6 cores and 20GB of RAM.

I'm thinking a 500GB SSD would be enough and if I like I could add a 
redundant NIC and a redundant power supply.

Pretty much a consumer grade box?

Your thoughts?









On 2022-10-07 18:23, Stephen Partington via PLUG-discuss wrote:
> Hit reply too soon. You can share or overprovision ram but you have to
> enable some features and load a couple of os level drivers to make it
> work.
> 
> On Fri, Oct 7, 2022, 9:22 PM Stephen Partington <cryptworks at gmail.com>
> wrote:
> 
>> And you can share ram across containers not vms.
>> 
>> On Fri, Oct 7, 2022, 9:21 PM Stephen Partington
>> <cryptworks at gmail.com> wrote:
>> 
>> i love proxmox.have used it fir years
>> 
>> The vcou is socket x cores x2 if you have hyperv/smt
>> 
>> So a 4 core ht cpu would be 8vcpu.
>> 
>> On Fri, Oct 7, 2022, 7:35 PM Keith Smith via PLUG-discuss
>> <plug-discuss at lists.phxlinux.org> wrote:
>> 
>> Hi,
>> 
>> I just watched a video that covered the Proxmox Hypervisor.  Seems
>> simple enough.  I've used Oracle's VirtualBox for years.
>> 
>> So I did some research on what a vCPU is.  I was suppressed.  The
>> math
>> given was (Threads x Cores) x Physical CPU = Number vCPU.
>> 
>> I have an old laptop that has 1 socket, 2 cores, four threads, and
>> 4GB
>> of RAM.
>> 
>> Given the math (4 x 2) x 1 = 8 vCPUS.  Is this correct?
>> 
>> From my reading it appears that RAM is not shared, so my bottleneck
>> is
>> RAM not cores or threads.
>> 
>> I am a PHP developer and a local vps would need 2GB of RAM at a
>> minimum.
>> I have found a LAMP VPS will crash if allocated less than 2GB of
>> RAM,
>> and will run will on 1 vCPU.
>> 
>> The good news is I really only need one VPS to be active at any
>> given
>> time.
>> 
>> If I wanted to build a box that could run more than one VPS at a
>> time,
>> lets say 4, and I wanted to allocate 2 vCPUs and 4GB of RAM I would
>> need
>> 4 threads x 2 cores to run the 4 VPS configured with 2 vCPUs each.
>> 
>> What about RAM.  Looks like I would need a minimum of 16GB of ram.
>> 
>> How much resources does the Hypervisor need, in this case Proxmox?
>> 
>> Thanks!!
>> Keith
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