Admins love hyperconvergence because it allows conjoining compute, storage, and networking resources that makes the environment cheaper and easier to manage. Experienced users can build an infrastructure in different ways using any parts. For instance, you can grab some servers from Dell and install an industry-standard hypervisor (Hyper-V, KVM, ESXi, whatever) on top of them. If you do not know that much about hyperconvergence though, consider buying an appliance.