Number of virtual machines per cluster with New-VIProperty

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• Number of virtual machines per server

  This number varies greatly with the type of workload and of (among other variables) network connectivity, but what would you say is a common number of virtual machines running on a particular server (NIC10 G ) platform? 10? 20? 40? The number of sockets/cores on this server?

  Any contribution is appreciated.

  Thank you

  Hey Ex,.

  This issue of $ 1 million has been requested several times before.  The answer is simple - there is no definitive answer.  There are so many variables that contribute to the number of virtual machines, you can run on a server:

  -number of Sockets
  -Core per socket

  -CPU speed

  -Density memory

  -Bandwidth allocated by host

  -Storage connectivity & bandwidth

  -Attributes VM & function of workload (amount of memory, CPU & disk by virtual machine)

  Although you can probably squeeze a lot more virtual machines per server with densities increased memory & CPU power, also increases your default domain name.  HA may be able to 'recover' virtual machines on a failed host, but how virtual machines are you willing to lose only once?  When sizing of your hosts, also the failover capabilities take into account.  Each of your cluster hosts should be able to tolerate the failure of at LEAST one host and meet all the requirements of memory & processor of the additional virtual machines now spread over the remaining hosts in the cluster.  This is why administrators does not often grow over 60% of the capacity of their hosts.  VMware uses a calculation of size "slot" to ensure you have adequate to your cluster failover capacity.

  As typical, I see regularly around the mark of 20 VM per server on a typical 2-socket server with 96 GB of memory and dual 10 G uplinks.  It is also good to think that most software licenses (VMware, Nexus 1000v etc.) is based on the counts of socket, and since the memory is going to be your first argument point - servers that can support large amounts of memory are usually an ideal choice.  B250 is perfectly placed to virtual workloads like this, while the B230 is a little firecracker with a bit more CPU power under its hood so you need.

  As vague as I was, I hope this starts your thought process

  Kind regards

  Robert

• VSphere number of virtual machines per CPU

  I've seen estimates of virtual machines per CPU and I understand that it depends on a combination of things. I think 4-5 virtual machines per CPU is up around. We run HP Proliant DL380 G5s (2 quad core) and it seems like that 4-5 per CPU core will be our number. Memory being the main factor limiting.

  I am now watching the servers (2 quad core) Proliant DL380 G6 and recital 72 GB of memory. Before I size like that, I want to know if the 8-10 mV by heart is conceivable. Even if I think that my current hardware could choke if I tried, I thought that perhaps most recent families of processor as the Proliant G6 Nehalem with VSphere improvements with regard to the planning of the CPU that could be a possibility.

  Also, I assumed variess speed processor directly with the virtual machine by core equip. As CPU speed increses # or virtual machines by increases in Basic. Is this correct?

  You're right it depends on many things, but for the general basic rules 4 - 6 virtual machines by heart for ESX 3.x and you can run no risk 6 to 8 virtual machines to vSphere, if you know that your virtual machines are use of the lamp, then pushing to 6-10VMs might do, but you should perhaps follow the activities and decrease if resources are hammering.  vSphere certainly has better CPU planning services and get the best performance from predecessor.  I test it on a test environment and the maximum stress and see how it runs.  What types of workloads and servers do you think?

  If you found this information useful, please consider awarding points to 'Correct' or 'useful '. Thank you!!!

  Kind regards

  Stefan Nguyen

  VMware vExpert 2009

  iGeek Systems Inc.

  VMware, Citrix, Microsoft Consultant

• Number of virtual machines per server: what is in the way

  I've seen everything from 10:1 to 80-90: 1 VMs per server.  What is a good average, and what is a good source to cite?

  How about starting with 20 virtual machines per server on average?

• Get the number of virtual machines per ESX host

  I am able to get the account with the following script command, but what I want to do is to report a 0 if there is no virtual machines on a host.  Currently it just show nothing if there are no VMs.  Any suggestions?

  Get-VMHost | Sort - the name of the property. Select Name, @{N = "VMCount"; E={($_ | Get - VM). County}}

  You can add an IF in the part of the expression.

  Try it like this

  Get-VMHost | Sort-Object Name | Select Name,@{N="VM";E={if(($_ | Get-VM).Count){($_ | Get-VM).Count} else {0}}}
  

  ____________

  Blog: LucD notes

  Twitter: lucd22

• Number of virtual machines per host

  Hello

  I have a very powerful HP Server with 64 GB RAM and 2 Xeon Quad cores CPU (8 cores total).

  I raise a virtual server in my other servers that use my corporate clients.

  Each customer will receive a server with 1 GB of Ram and 2 hearts and will host ERP software, MS Office and other software. This server uses about 10 Terminal server clients.

  I would like to know if my powerful server will be able to manage many servers (60) or see you here all kind of bottleneck.

  I read document Maximums of VMware, but I need a concrete answer.

  Thank you.

  We get about 8.5 VM by heart in one of our VDI environments, but who works on a base 16 HOST.  On our 8 cores boxes, get us around 6.5 VMs by heart, but can go.

  our first VDI environment we have XP with 1 GB of RAM, 1vCPU (VMware VDM)

  our second VDI environment we have invited with 640 MB of RAM, XP 1vCPU (VMware View using linked clones)

• What is a good figure for the average number of virtual machines per server?

  I hear everything from 10:1 to 100: 1.  What is a good average, and analysts say?

  So what are the good standards of processors and apps

• While trying to see Planner installation and operation, the test in local mode, the EXECUTION fails with message "Waiting for the number of virtual machines to register.

  While trying to see installation and operation Planner, the test in local mode with only 1 VM the EXECUTION fails with message "Waiting for the number of virtual machines to register.

  There may be a lot of problems in the desktop VM. Agent service see Planner is not running in VM Office. You can check in the event viewer to see what kind of error occurs. The most usual error missing file IP.txt c; drive or harness IP in the IP.txt produce if there is.

• Number of Virtual Machines in a host

  Dear all,

  I am fairly new with vmware.  As a newbe, I have a lot of request for information on the virtual machine.  As a first step, I have a basic question:

  How we calculate the number of virtual machines that can be installed safely on a host computer.

  For example,.

  The host is with below configuration

  HP DL380 G7, E5645, (6core, 2.4 GHz, 12 MB L3, 80W)

  Dual processor

  48 GB of memory

  8 x 300 GB hard drive

  STD config

  For example, in the configuration above, how WIN2008R2, 8 GB servers can be loaded.

  Is it as 48 / 8 = 6 Machines?

  If so, what is the involvement of CPU cores?

  Your descriptive answer is much appreciated...

  Thanks in advance...

  Welcome to the community,

  This depends on the VM workload. With the material you mention I guess the limiting factor will be the RAM and not the CPU. What is important for this host is have you FBWC attached to the RAID controller to make it work in writeback mode!

  A note more: you will need a licensed version to run ESXi 5.x on this host. The free hypervisor does support up to 32 GB of physical memory.

  André

• HELP - how to get the number of virtual machines on a data store?

  Looking at the inventory of the data store in the VI client, there are a "number of Virtual Machines:" according to the General information for the Summary tab... I'm looking for a script that retrieves this information for me...

  I started the script but I'm stuck... I am very new on this...

  Get-Datastore. WHERE-object {$_ .name - like "wlp" ' "} #this gives me all the data which are not local warehouses

  Could someone give an overview on how to script to retrieve the number of virtual machines on data warehouses...

  Thank you, Lee

  Sorry, something went wrong with the copy - paste

  Get-Datastore | where {$_.Name -like "vmfs*"} | Sort-Object -Property Name | %{$_ | select @{N="DSname"; E={$_.Name}},
                                                                        @{N="VMcount";E={($_ | Get-VM | Measure-Object).count}}}
  

• Report on the ability of virtual machines VMware Cluster

  We started to evaluate Foglight for capacity planning and evaluation. One of the reports that I believe is interested in our leadership is the "ability of virtual machines VMware Cluster" report. I see that the report provides a value for the VMS remaining. I would like to learn a little more about this value and how is it calculated:

  1. What exactly a 'virtual machine' represents in these reports?
  2. Can a similar report to run using a specific type of server based on the allocation of resources or patterned after an existing VM wokload?

  We are a small, medium and large VM offering based on the allocation of resources. I would like to change the report to display the number of each type of virtual machine I have available... or pointer pointing to an existing virtual machine, and according to its resources and workload, determine how this server, I have available.

  It is based on the average size of the virtual machine in the cluster.  If you look at the dashboard of capacity management in the user interface, it can give you more details by cluster.  It is based on the average of the use of min/max/AVG across all virtual machines in a period given (usually 90 days).  This can not be changed today, but there is work to allow lets you specify a size of slot for something as small, medium, large, etc...

  This feature exists in the Foglight for virtualization, however Standard Edition.  It might be interesting to watch this, if you need it sooner.

• Report on the number of virtual machines by datastore

  Hello

  I use vFoglight 6.6.2. I try to have a report generated every week that contains the number of virtual machines running in the data store. But I don't know how to create a table of edge/report for these details.

  request for expert assistance.

  The following query gives you so all virtual machines on the specified data store

  Using the following mandatory input parameters:

  {VMWDatastore}: type foglight - 5:VMWDatastore

  Select objects of type Machine virtual VMware in parameter {VMWDatastore}

  root of {VMWDatastore} / virtualCenter/virtualMachineCollection/virtualMachines

  where:

  ({VMWDatastore} to /datastores and)

  (/ vmState/current/value is equal to "receiving")

  Like query UI setup will allow you to use it as a dashboard of entry.

  Try around with the request and let me know if this help.

  Best regards

  hEINER

• Maximum number of virtual machines by free ESXi hypervisor?

  Community of VMware,

  I just installed the free 5.5 ESXi hypervisor and I wonder if the same virtual machine limits apply to the stand-alone scenario as vCenter? Can I run actually 512 VMs? What, if any, is the maximum number of virtual machines, I can run on a free version of ESXi?

  From 5.5 ESXi limits most have been removed, but only a limit of 8 vCPU per VM remains. So if I'm wrong, the VM 512 mentioned for each host (see http://www.vmware.com/pdf/vsphere5/r55/vsphere-55-configuration-maximums.pdf) affect the free hypervisor.

  André

• How do I 'batch' closing of a large number of virtual machines on a single order?

  We have performance issues with some programs that a large number of machines virtual shutdown.  Steve Jin here mentions on his blog that there is a number of API and batch processing.  I can't find on the subject if and would just like to send a command to stop, a large number of virtual machines.  Multi-threading applications for judgment has not been effective or possible.

  If someone could point me to the right direction, I would be grateful.   Thank you!

  Sean Clark - vExpert 2009, VCPX3 - http://twitter.com/vseanclark - http://seanclark.us - http://vmunderground.com

  Hey Sean,

  I'm not familiar with batch API too many orders, but I'm guessing that you're referring to:

  Turning the power on

  • Single - PowerOnVM_Task

  • Multi - PowerOnMultiVM_Task

  Power off

  • Single - PowerOffVM_Task

  • Multi - as far as I know, no

  As you probably know, there are a lot of API command to power on a set of virtual machines, but there is not one to turn off. It maybe an internal/private API to power off the coast, but I have not heard/seen it.

  If your question is around Steve Jin VI Java API, maybe hit him up on top of this blog, you probably a more precise answer and if this isn't the case, I think he'll be able to help directly as well.

  =========================================================================

  William Lam

  VMware vExpert 2009,2010

  VMware VCP3, 4

  VMware VCAP4-DCA

  VMware scripts and resources at: http://www.virtuallyghetto.com/

  Twitter: @lamw

  repository scripts vGhetto

  Introduction to the vMA (tips/tricks)

  Getting started with vSphere SDK for Perl

  VMware Code Central - Scripts/code samples for developers and administrators

  VMware developer community

  If you find this information useful, please give points to "correct" or "useful".

• Migration of a large number of virtual machines between servers

  I have a single ESX server and VirtualCenter (vSphere 4).

  I need to migrate all my virtual machines (30) to a new server, I'm.  They are all turned off (I use them as test beds a small number at a time).

  For the transition, I added two servers in my data center vCenter. I can migrate each VM individually, but it will be extremely painful and long.

  If anyone can recommend a way for me to start moving all virtual machines and let it run for a few days or longer, however it takes, perhaps through orders in the Service Console or?

  Thank you!

  As long as the virtual machine have several virtual disks on different banks of data/files, you should be able to copy files by using for example Veeam FastSCP.

  If you have disks to different stores of data/files, you will need to reconfigure the virtual computer on the target (changing settings or edit the VMX file) because of UUID data warehouses.

  Before copying the files on the new host:

  -remove all attached CD/DVD or ISO virtual machine

  -Reset default CPU flags, see KB1011294 - a host processor is not compatible error message...

  André