Esx server is core product of Vmware.
It functions as Hyper visor or Virtulization Layer
It is foundation of Virtual Infrastructure Suite
Its a Bare metal Installation ( It doesn't need operation system )
Its runs only on 64-bit servers
It comes in 3 flavors
1. ESX Full
2. ESXi
3. ESXiFree
As its bare metal installation Hardware resources are highly utilized by
Virtual machines. As resources are not utilized by Host operation system
And one more thing is no limitation on hardware usage.
Esx server has two components
Service Console :
its OS used to manage ESX Server and virtual machines that run on the server.
these include firewall,SNMP agents,Web server.
This Service Console is Redhat Based. and Not the Kernel
VMkernel:
it manages virtual machine's access to the underlying physical hardware
Cpu scheudling
Memory Management
Virtual Switch data processing
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