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Two host stretched vSAN cluster with Standard license?

Duncan Epping · Jan 24, 2017 ·

I was asked today if it was possible to create a 2 host stretched cluster using a vSAN Standard license or a ROBO Standard license. First of all, from a licensing point of view the EULA states you are allowed to do this with a Standard license:

A Cluster containing exactly two Servers, commonly referred to as a 2-node Cluster, can be deployed as a Stretched Cluster. Clusters with three or more Servers are not allowed to be deployed as a Stretched Cluster, and the use of the Software in these Clusters is limited to using only a physical Server or a group of physical Servers as Fault Domains.

I figured I would give it a go in my lab. Exec summary: worked like a charm!

Loaded up the ROBO license:

Go to the Fault Domains & Stretched Cluster section under “Virtual SAN” and click Configure. And one host to “preferred” and one to “secondary” fault domain:

Select the Witness host:

Select the witness disks for the vSAN cluster:

Click Finish:

And then the 2-node stretched cluster is formed using a Standard or ROBO license:

Of course I tried the same with 3 hosts, which failed as my license does not allow me to create a stretched cluster larger than 1+1+1. And even if it would succeed, the EULA clearly states that you are not allowed to do so, you need Enterprise licenses for that.

There you have it. Two host stretched using vSAN Standard, nice right?!

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Related

BC-DR, Server, Software Defined, Storage, vSAN 6.0, 6.1, 6.2, 6.5, stretched cluster, VMware, vsan, vSphere

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Comments

  1. Md Shahed Hasib Bhuiyan says

    24 January, 2017 at 17:16

    It’s really amazing

  2. Eelke Hagen says

    24 January, 2017 at 18:21

    Vmware told me stretched clustering was only supported on enterprise licences… Has this recently changed?

    • duncan says

      24 January, 2017 at 18:55

      For clusters larger than 1+1+1 that is true.

  3. Halin says

    4 May, 2018 at 06:12

    No, that is mistake. please refer to the document. that mention“The 2-node vSAN deployment model is not restricted to a specific vSAN license edition. In other words, any of the licensing editions can be used with a 2-host configuration.”
    https://www.vmware.com/content/dam/digitalmarketing/vmware/en/pdf/products/vsan/vmware-vsan-66-licensing-guide.pdf

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About the author

Duncan Epping is a Chief Technologist in the Office of CTO of the Cloud Platform BU at VMware. He is a VCDX (# 007), the author of the "vSAN Deep Dive", the “vSphere Clustering Technical Deep Dive” series, and the host of the "Unexplored Territory" podcast.

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