Thursday, October 16, 2008

VMware ESX vs ESXi Comparison


Capability

VMware ESX

VMware ESXi

Service Console

Service Console is a standard Linux environment through which a user has privileged access to the VMware ESX kernel. This Linux-based privileged access allows you to highly customize your environment by installing agents and drivers and executing scripts and other Linux-environment code.

VMware ESXi is designed to make the server a computing appliance. Accordingly, VMware ESXi behaves more like firmware than traditional software. To provide hardware-like security and reliability, VMware ESXi does not support a privileged access environment like the Service Console of VMware ESX. To enable interaction with agents, VMware has provisioned CIM Providers through which monitoring and management tasks – traditionally done through Service Console agents – can be performed. VMware has provisioned RCLI to allow the execution of scripts.

Remote CLI

VMware ESX Service Console has a host CLI command through which VMware ESX can be configured. ESX 3.5 Update 2 supports RCLI.

VMware ESX Service Console CLI has been ported to a Remote CLI (RCLI) for VMware ESXi. RCLI is a virtual appliance that interacts with VMware ESXi hosts to enable host configuration through scripts or specific commands.

Note: RCLI is limited to read-only access for the free version of VMware ESXi. To enable full functionality of RCLI on a VMware ESXi host, the host must be licensed with VI Foundation, VI Standard, or VI Enterprise.

The following Service Console CLI commands have not been implemented in RCLI:

  • ESXcfg-info
  • ESXcfg-resgrp
  • ESXcfg-swiscsi


VMware KB

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