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  • 1.  SAP HANA - vMotion bottleneck

    Posted Jul 05, 2023 03:04 PM
    Hi,
     
    we're planning a refresh of our existing vSphere SAP HANA cluster. VMs have up to 2 TB RAM and currently vMotion between hosts with 2 x 10G is not really possible, VMs sometimes freeze etc. and it just takes ages. I've to retest with vSphere 7.0.3 but anyway...
    As we have to replace hosts we think about 100G, our current standard in DC is 25G but I hope that 100G will speed up vMotion for those large VMs even more.
     
    Any real life experience how big the benefit for vMotion of HANAs is? Is it linear of will it slow down at xx GB? 100G will need new network equipment not only for access switches, network team told me that bandwidth of spine/leaf switch also needs to be boosted. So there are some €€ involved.
     
    Information found here looks promising.
     
    Thanks
     


  • 2.  RE: SAP HANA - vMotion bottleneck