vSAN Pros
The biggest advantage of vSAN is that it can be used with the existing infrastructure. Moreover, you don’t need a dedicated server to build a shared storage. Given that, you can save money on hardware and time on configuring the software like in the case of the iSCSI approach.
Another plus is that you don’t need any special knowledge like you’d need for dealing with a Fibre Channel infrastructure. Your knowledge of VMware products is enough to create and maintain VMFS storage with vSAN.
vSAN Cons: vSAN uses software emulated layers of hardware. That’s why if one of the physical servers goes down, the entire cluster becomes unstable. But you can protect yourself from the possible consequences of this flaw by backing up your cluster.
The other disadvantage is that a vSAN license may be really expensive if you have a large infrastructure.
Anyway, you can try VMware’s free Virtual SAN Assessment tools to decide if vSAN is the best solution for you.
Read everything about vSAN Cluster here: https://www.nakivo.com/blog/configure-vsan-cluster/?utm_source=forums_taras_yefimenko
