WWWpalani
Contributor
Contributor

Is the cores can be splitted

Hi Team,

I have a Single Quad Core processor with 2.33 ghz and 20 GB RAM

How many VMs can be insalled example OS windows server 2003 and exchange server sql server

Is their an option to split my available cores for example i have 4 cores can i split it into 1,0.5,1, 0.5 and 1

So that i can have 5 VMs in my VMbox

How to implement networking in vmware

is must to have vlan and vswitch in the network

suggestion required

thanks

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9 Replies
AndreTheGiant
Immortal
Immortal

>How many VMs can be insalled

You can reach a CPU core ratio to 1:4 - 1:8

But you must have enough memory :smileylaugh:

>Is their an option to split my available cores

Yes, use CPU affinitty (into VM proerties/resources)

Do not use CPU affinity if you will use Vmotion

Andre

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Yattong
Expert
Expert

Hey,

You've got quite a few question there, and it may be a good idea to point you towards some great documentation thats gona help you understand more about VMware and how to implement a virtual infrastructure.

http://www.vmware.com/support/pubs/vi_pages/vi_pubs_35u2.html

Sizing your infrastructure is difficult from the small amount of information you've given. Even though your ESX box does have quite a bit of beef in it, whether it will be enough always depends on what you're trying to host.

For example, you will most certainly need to size you exchange infrastructure properly which there are white papers and tools to do so.



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~y

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WWWpalani
Contributor
Contributor

Hi Team

Let me explain my scenario i have a Xeon Quad core 2.33, 20 GB Memory, 1462 + 3001 SCSI SAS HDD

Here i have 4 cores were i can have 4 VMs each has 1 core with 5gb ram my question is can i have a partial core like 0.5 for an VM so that i can increase my total no of VMs

if it is possible is their any document for ths procedure

suggestion please

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AndreTheGiant
Immortal
Immortal

Core assignment is dynamically managed by the hypervisor.

Andre

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Andre | http://about.me/amauro | http://vinfrastructure.it/ | @Andrea_Mauro
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BUGCHK
Commander
Commander

Virtual Machines are 'time-sliced' on physical cores - you can have more virtual CPUs (VCPU) than physical cores. However, when - for example - a virtual machine with 4 VCPUs is scheduled, it requires 4 physical cores to be available, because VCPUs are not emulated.

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WWWpalani
Contributor
Contributor

Hi team

Is there any settings available to split the cores like 0.5 or 0.25 in ESX 3 or ESXi so that i can increase the VMs

plz suggest

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depping
Leadership
Leadership

No there is not.

You have the following options:

  • Reserve a specific amount of MHZ per VM and set a limitation

  • Pin a VM to a core, but this is a full core

  • Let ESX(i) do it's magic!

I would go for option 3! Might want to consider using Shares to give some of the VMs extra priority.

Duncan

VMware Communities User Moderator | VCP | VCDX

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weinstein5
Immortal
Immortal

I agree with Duncan let ESX(I) do its magic - the vmkernel does an excellent job of scheduling the vCPUs so they can get the needed resources -

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wila
Immortal
Immortal

Hi,

From a CPU point of view, it should be no real problem to simultaneously run 16 single vCPU virtual machines if you "let ESX do its magic" as already states.

This of course also depends on other factors such as your disk speed and available free RAM



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Wil

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Visit the VMware developers wiki at http://www.vi-toolkit.com

| Author of Vimalin. The virtual machine Backup app for VMware Fusion, VMware Workstation and Player |
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