Network design with Juniper QFX for virtualization

Hello everyone,

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I have to design a new network involving Juniper QFX5110-48S devices for a work project. This network aims to be used by virtualization clusters with servers and NetApp storage gears. There are 3 datacenters to interconnect with the QFXs. Working for a service provider, the DCs are linked with DWDM channels (on our own fibers) between each others (about 1 or 2 ms between each DC). The idea is to have a network topology like a triangle.

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Virtualization Gear --- QFX 1 ------- QFX 2 --- Virtualization Gear | | | | +--- QFX 3 ---+ | | Virtualization Gear 

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I see a lot of designs based on EVPN and VXLAN technologies around here but I do not know much about these technologies. What would be your advice to design such topology?

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Of course I know that gear should not be bought before having a proper design, but you know how management can be sometime.

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Cheers