Maximum number of FT enabled VM per host in vSAN 6.6

[eapolinar]

In vSphere 6.5 configuration maximums, 4 virtual machines per host is the maximum for Fault Tolerance. Does this number apply to vSAN too?

Thanks.

[TheBobkin]

Hello eapolinar,

Yes as this is a ESXi host limit - any supported configuration maximums for ESXi are the same regardless of whether running vSAN on top of this (and I am not aware of any exceptions to this).

Bob

[GreatWhiteTec]

Hi eapolinar,

Correct. Because vSAN is integrated with vSphere, a lot of of the maximums fall under vSphere (ESXi+vCenter), unless explicitly indicated under the vSAN section of the configuration maximums. For Stretched-clusters, it can become interesting, but luckily we have PFTT and SFTT that can help with this. See Cormac's blog Supporting Fault Tolerance VMs on vSAN Stretched Cluster - CormacHogan.com

https://www.vmware.com/pdf/vsphere6/r65/vsphere-65-configuration-maximums.pdf

Hope that helps

[eapolinar]

Thanks TheBobkin and GreatWhiteTec for your replies. I just wanted to double check that 4 is the max for vsan.

Thanks again,

Edgar