VMware Virtual SAN 6.0 benchmark

Last week I was going through ‘What’s New: VMware Virtual SAN 6.0‘, it seems like VSAN 6.0 is bigger, better and faster. The latest installment of VMware’s distributed storage platform provides a significant IOPS boost, up to twice the performance in hybrid mode. The new VirstoFS on-disk format is capable of high performance snapshots and clones. Time to put it to the test.


Disclaimer: this benchmark has been performed on a home lab setup, components used are not listed in the VSAN HCL. My goal is to confirm an overall IOPS and snapshot performance increase by comparing VSAN 5.5 with 6.0. I did so by running a synthetic IOmeter workload.

VMware has a really nice blogpost on more advanced VSAN performance testing utilizing IOmeter.



My lab consists of 3 Shuttle SZ87R6 nodes, connected by a Cisco SG300.

 Chipset  Z87
 Processor  Intel Core i5-4590S
 Memory  32 GB
 NIC 1  1 GE (management)
 NIC 2  1 GE (VSAN)
 HDD 1  Samsung 840 Evo (120GB)
 HDD 2  HGST Travelstar 7K1000 (1TB)


ESXi/VSAN versions

  • ESXi 5.5 Update 2 (build 2068190)
  • ESXi 6.0 (build 2494585)


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