vSAN1

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  • 1.  Quick vSAN storage calculation

    Posted Feb 15, 2017 09:20 PM

    I'm new to VSAN and I'm trying to do a quick calculation on storage.

    Minus the SSD's I have 4 hosts each with 8TB of storage. With a FTT=1, does that give me roughly 16TB of usable storage for VMs?



  • 2.  RE: Quick vSAN storage calculation

    Posted Feb 15, 2017 09:30 PM

    Yes, you are correct. FTT 1 is mirroring, each component will have a mirror copy, that case usable space will be approximately total size / 2 which is 16TB in your case.



  • 3.  RE: Quick vSAN storage calculation

    Broadcom Employee
    Posted Feb 16, 2017 01:59 PM

    We recommend having ~30% disk slack space for vSAN operations (resyncs, rebuilds, etc.)



  • 4.  RE: Quick vSAN storage calculation

    Posted Feb 17, 2017 04:17 AM

    Greetings!

    You are right about your calculation but there are other parameters as well which we should consider while sizing vSAN. If you are looking for correct sizing, please refer to vSAN TCO - https://vsantco.vmware.com

    vSAN is quite different from traditional storage arrays in terms of Sizing.

    Hope this answers your query! :smileyhappy:

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