There are two Server (ESXi) as the OS storage system with Vmware Harddisk and DATA (Guest Server) have a raid Config harddisk to Harddisk protection and do not have Redundant systems.
Server 2 has a (ESXi) system as Vmware has Harddisk store the OS and DATA (Guest Server) with the Config a raid harddisk Harddisk to prevent waste and without Redundant.
There are Server 2 (ESXi) had a system Vmware have Harddisk and keep OS DATA (Guest Server) is Config is a raid harddisk. To prevent Harddisk was broken, and there is no Redundant system.