VMware vSphere

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  • 1.  Minimal host

    Posted Feb 09, 2024 01:06 AM

    Hello,

    What recomended minimal host for make an cluster and run the DRS? I heard many people say the min is 2, and some other say is 3. Anyone here know what pro and cons if use 2 or 43 host on the host and DRS?



  • 2.  RE: Minimal host

    Posted Feb 09, 2024 07:56 AM

     At least two ESXi hosts



  • 3.  RE: Minimal host

    Posted Feb 09, 2024 08:58 AM

    While technically the minimum is 2, VMware generally recommends having at least 3 hosts for optimal performance and redundancy.

    More hosts mean

    DRS has more options to optimize resource allocation and placement of VMs.

    If you have a small environment with minimal downtime risk and budget constraints, 2 hosts might be sufficient. But for most production environments, having 3 or more hosts is recommended to ensure better redundancy, flexibility, and performance with DRS.



  • 4.  RE: Minimal host

    Posted Feb 09, 2024 09:00 AM

    Have official document from vmware that 3 hosts is more recomended than 2 hosts?



  • 5.  RE: Minimal host

    Posted Feb 09, 2024 09:12 AM

    this is the test documentation about DRS performance against number of hosts in the cluster 

    https://www.vmware.com/content/dam/digitalmarketing/vmware/en/pdf/techpaper/drs_performance_best_practices_wp.pdf