Taged In Vmware What is ...?
What is Vmware VSAN (Virtual SAN)?
VSAN is a software designed storage in Vmware which provides the ability to use ESXi local datastore as a shared SAN volume.
In short, This is new feature developed by Vmware in its Vsphere version starting from ESXi 5.5 Update 1 (Released in 11th March 2014) to till version ESXi 6.5 Update 2.
Reffer the Vmware KB https://kb.vmware.com/s/article/2150753 for the details about VSAN versions.
In the hybrid architecture, server-attached magnetic disks are pooled to create a distributed shared datastore that persists the data. In this type of architecture, you can get up to 40K IOPS per server host.
In All-Flash architecture, the flash-based caching tier is intelligently used as a write-buffer only while another set of flash devices forms the persistence tier to store data. Since this architecture utilizes only flash devices, it delivers extremely high IOPs of up to 90K per host, with predictable low latencies.