Question from the new quy about HA

[CityofBartowTom]

We are about to replace our current infrastructure of 3 hosts with a Nutanix running VMware solution. My question is, has any one re purposed an old cluster and downsized it? What I mean, we are going to reuse two of the three hosts to run a small 3 server domain, and I want to make sure that HA will be available and operational...sounds simple, but I would like to make sure before we roll it out...thank you

[a_p_]

... reuse two of the three hosts to run a small 3 server domain ...

A 3 server domain with only two hosts? That sounds like magic ;-)))

Reusing old hosts is not uncommon. If you have the required licenses, and shared storage you can certainly use HA.

André

[SupreetK]

vSphere HA should work with just two hosts as well. However, you won't be able to use vCenter HA and vSphere HA Admission Control might have to be disabled (this should not be a problem if it is going to be just three servers all the way).

Cheers,

Supreet

[depping · Accepted solution]

vSphere HA requires a minimum of 2 hosts to function correctly. So you are good to go. Even Admission Control works with only 2 hosts. Not an issue. You will however need to think through your storage design, as a storage cluster with only 2 hosts can be challenging to manage when a failure occurs or a network split between the hosts. (who owns the data?)