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vSAN 6.6 Stretched Cluster Demo

Duncan Epping · May 19, 2017 ·

I had one more demo to finish and share and that is the vSAN 6.6 stretched cluster demo. I already did a stretched clustering demo when we initially released it, but with the enhanced functionality around local protection I figured I would re-record it. In this demo (~12 minutes) I will show you how to configure vSAN 6.6 with dedupe / compression enabled in a Stretched Cluster configuration. I will also create 3 VM Storage Policies, assign those to VMs and show you that vSAN has place the data across locations. I hope you find it useful.

Related

BC-DR, Server, Software Defined, Storage, vSAN 6.6, stretched, stretched cluster, virtual san, VMware, vsan, vSphere

Reader Interactions

Comments

  1. Wojciech Marusiak says

    19 May, 2017 at 13:09

    Thanks for the great video.

  2. g4n says

    25 May, 2017 at 17:18

    I was wondering how many nodes are required to comply with the “Not Stretched – Preferred Site” policy.
    I’m currently in a VSAN 6.6 POC with a 2+2+1 full flash stretched config, and I’m unable to “pin” one VM to one site using RAID 1 local protection. Is it even possible?

    Thank you for all the good knowledge!!!

    • Duncan Epping says

      30 May, 2017 at 15:10

      yes it is possible, but you need 3 nodes per site. The reason for this is because you have 2 copies of the data and a witness component which needs to reside locally. I had a few other folks asking a similar question so I threw this together quickly:

      http://www.yellow-bricks.com/2017/05/30/sizing-vsan-stretched-cluster/

      • g4n says

        30 May, 2017 at 17:22

        Great. In my book, your word is as good as official documentation.

        Maybe a good implemenation request could be a “local witness vm”, to be hosted outside the VSAN cluster but in the same site.

        Thank you so much Duncan.

  3. Paolo Torresani says

    1 October, 2017 at 20:17

    In a stretched cluster deployment there is the recommendation to use 2 default isolation address, one specific to site A and one specific to site B.
    Is it ok to use a single isolation address that is reachable from both site even if the link between them is broken?

    • Duncan Epping says

      4 October, 2017 at 14:41

      sure, if you have an IP which is reachable at both sites even during a site partition, then that is okay as well.

  4. Paolo Torresani says

    4 October, 2017 at 21:24

    Thank you Duncan!

  5. pghponton says

    15 March, 2018 at 11:25

    Thanks for the video. I do have one question, in a vSAN stretched cluster, can you use vCenter HA? I know that a vSphere Metro Storage Cluster only allows for one vCenter server. Thanks in advance for sharing.

    • Duncan Epping says

      15 March, 2018 at 12:15

      I think guidance around this is being worked on by the vCenter Tech Marketing guys… Both for Metro Storage and vSAN Stretched.

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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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