I have done some testing for our newly built VSAN 6. I used VMware I/O Analyzer to do testing. Its all flash Vsan environment and currently have 7 nodes in the cluster. when I did 4k_50read_100rand testing, I found that there are 5x more adapter reads/writes than VM reads/writes.Could it be that all the VSAN overhead is consuming that much bandwidth. I have attached my results.