I often get questions around performance with regards to vSAN. It is not an easy thing to quantify unfortunately because of the variables involved. Servers, disks, IO controllers, networks and not to mention, continuous improvements in software.

I have seen some impressive performance numbers using certified vSAN Ready Nodes which rivals the best of traditional SAN storages. The wide adoption and dwindling costs of SSD & Flash capacities have definitely changed the landscape of HCI in general.

Just to give a feel of what vSAN can do, I decided to run some benchmarks off my spanking new SuperMicro boxes. These boxes are by no means “Enterprise”, and they run consumer grade NVMe M.2 and SATA 6Gbps SSD’s. To be fair, its not even the top-of-the-line consumer drives. It is at best, mid-range consumer flash drives.

Performance benchmarking was done using IOMeter with the following setup.