vSAN Witness deploy on other vsan 2-node cluster

[mluthfim99]

Hi Expert,

I would like to deploy vsan 2-node cluster on 2 sites (Site A and Site B). is it possible if I deploy the witness appliance like this

witness appliance site A deploy on vsan cluster site B

witness appliance site B deploy on vsan cluster site A

Both sites are in the same vCenter

Thanks in advance.

[paudieo]

Cross Site Witness Support would not be supported in that scenario
More details here from Cormac's blog

https://cormachogan.com/2017/09/05/new-vsan-stretched-cluster-topology-now-supported/ 

[mluthfim99]

Hi Paudieo,

FYI, My plan is not configure it as stretched-cluster. only normal vsan 2node cluster. The topology would be like below

DC

-> vSAN Cluster DC

-->--> Host 1

-->--> Host 2

-->-->--> [VM] vSAN Witness Appliance for vSAN Cluster DRC

-->-->--> [VM] vCenter Company 

DRC

-> vSAN Cluster DRC

-->-->  Host 3

-->-->  Host 4

-->-->--> [VM] vSAN Witness Appliance for vSAN Cluster DC

please correct me if im misunderstanding.

[paudieo]

2-node vSAN clusters use the same underlying architecture as vSAN stretch cluster so its the same restriction

we call this out here on offical docs

https://docs.vmware.com/en/VMware-vSphere/7.0/vsan-network-design-guide/GUID-91E2FB72-32D2-4C42-B6CC...

[mluthfim99]

Hi Paudieo,

so based on that docs, I assume I can deploy on another ESXi cluster (let say 3-nodes cluster)? am I right?

[paudieo · Accepted solution]

Yep deploy another 3-node vSAN cluster (or simply standalone host) that can run the vSAN witness

[mluthfim99]

Hi Paudieo

Thank you so much for your help.