This is the fourth major release of VSAN functionality. VMware is definitely taking this product seriously and trying to evolve VSAN to a true enterprise-grade SDS stack.
If you are a customer that has an extensive investment in the VMware eco-system from a people, process and technology perspective, then VSAN could be a good choice if you are dipping your toes into the HCI space for a small part of your infrastructure. Use-cases such as Management, DMZ, PCI, Dev/Test and EUC Clusters are a great fit, in my opinion. If you are selecting an enterprise-wide solution for mission/business critical applications, then a more mature SDS vendor would be worth considering to minimise risk.
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