Max VMs? Max RAM?

[HenrikElm]

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

[AndreTheGiant]

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

[AntonVZhbankov]

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.

---

VMware vExpert '2009

http://blog.vadmin.ru

[HenrikElm]

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

[AndreTheGiant · Accepted solution]

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

[HenrikElm]

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

/Henrik

[AndreTheGiant]

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

Andre

[HenrikElm]

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