That has almost nothing to do with SAN and everything to do with Amazon's implementation. A nuc will never give you the resiliency or performance of a properly

That has almost nothing to do with SAN and everything to do with Amazon's implementation. A nuc will never give you the resiliency or performance of a properly sized SAN. Furthermore, you'll never get close to saturating a 40gbps link with a database workload, your limitation is iops, not throughput, and you don't have anywhere near enough cpu to max out those links in a loaded server much less a nuc.