VMware vSphere

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  • 1.  Max VMs? Max RAM?

    Posted Jun 21, 2009 05:56 AM

    I find conflicting information in different papers. Is the maximum number of VMs per ESXi 4.0 host 256 or 512? Need to know cause it makes a difference when using VDI...

    And is max RAM 512 Gb or 1 TB? (If you use the right license of course, I just want to know the possible maximums).

    /Henrik



  • 2.  RE: Max VMs? Max RAM?

    Posted Jun 21, 2009 06:09 AM

    Official documentation is:

    http://www.vmware.com/pdf/vsphere4/r40/vsp_40_config_max.pdf

    Virtual machines per host 320

    Size of RAM per host 1TB

    Remember that (at this time) is not possible use VMware View Composer with VC4.

    Andre



  • 3.  RE: Max VMs? Max RAM?

    Posted Jun 21, 2009 06:40 AM

    Aha.. And in here: it says 256 .. I wonder which is more "official"?

    I will try to find those 512 Gb RAM papers as well but those are of less real world importance, to me anyway..

    /Henrik



  • 4.  RE: Max VMs? Max RAM?
    Best Answer

    Posted Jun 21, 2009 06:45 AM

    The official documentation is in:

    http://www.vmware.com/support/pubs/vs_pages/vsp_pubs_esxi40_e_vc40.html

    Whitepapers could be not uptodate, or have small numbers due to "best practice" or something similar.

    Andre



  • 5.  RE: Max VMs? Max RAM?

    Posted Jun 21, 2009 06:50 AM

    Ok! I guess the numbers changed some late in the development cycle? I will use your link then when sizing the solutions.

    /Henrik



  • 6.  RE: Max VMs? Max RAM?

    Posted Jun 21, 2009 06:53 AM

    Remember that VMware View is not (yet) supported con vSphere.

    Andre



  • 7.  RE: Max VMs? Max RAM?

    Posted Jun 21, 2009 07:03 AM

    Yepz. I hope they will fix that soon. And make it possible to run 64-bit vdi clients.. And fix Data Recovery to work with Win2008 as os for vcenter.. And make it possible to vmotion the DR VA...

    I see in the chart that 2048 linked clones can stay on a single vmfs. Good! Now VMWare, fix the remaining bugs and we have us a pretty darn good cloud solution for quite many companies out there!

    /Henrik



  • 8.  RE: Max VMs? Max RAM?

    Posted Jun 21, 2009 06:23 AM

    Here are configuration maximums: http://www.vmware.com/pdf/vsphere4/r40/vsp_40_config_max.pdf

    1TB RAM per host, 255GB RAM per VM. Absolut maximum number of VMs is 320, but in case of HA cluster it would be lower.

    HA cluster: 1280 VMs total, 100 VMs per host if 8 eight or less hosts, 40 VMs per host if more than 8 hosts.


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    VMware vExpert '2009

    http://blog.vadmin.ru