Dell AX4-5 Specifications download pdf (Page 7)

ESX overview

ESX consists of virtualization software that provides server consolidation by allowing several instances of

similar and dissimilar operating systems to run as virtual machines on one physical machine. This cost-

effective, highly scalable virtual machine platform offers advanced resource management capabilities. ESX

minimizes the total cost of ownership (TCO) of computing infrastructure by:

• Increasing resource utilization.

• Decreasing the number of servers and all associated costs.

• Maximizing server manageability.

Figure 1 shows the architecture of two ESX servers (ESX 1 and ESX 2) with virtual machines containing

guest operating systems that sit on top of the virtualization layer.

Virtual Machines Virtual Machines

VMware ESX 1 VMware ESX 2

Figure 1. Architecture of VMware ESX Server

ESX Server runs directly on the hardware, and allows virtual machines to run on a hypervisor or on top of

the virtualization layer provided by VMware. The combination of an operating system and applications is

referred to as a virtual machine. You use the Management User Interface (MUI) to manage ESX 2.x

servers. A VMware vCenter server allows you to manage a number of ESX servers and to perform

operations such as VMotion. VMware vCenter 1.x is used to manage one or more ESX 2.x servers. No

MUI is available to manage ESX 4.0 and 3.x. The VMware vSphere client can only install and manage a

single ESX server, while a VMware vCenter server can install and manage one or multiple ESX 4.x and/or

ESX 3.x servers.

ESX 4.0 and ESX 4i were introduced in May 2009. VMware ESX 4.0 is similar to the previous versions of

ESX and includes a service console (COS) to boot ESX Server. VMware ESXi is a “thin” version that

does not include a service console. The management of the VMware ESXi version is done using a vCenter

server or a client whose operating system is embedded in the hardware or can be installed on a hard disk.

On Windows and Linux platforms, you can also use RemoteCLI to issue commands directly to the

VMware ESXi server. For more information on ESX 4.0/ESXi, please see

www.vmware.com.

EMC CLARiiON Integration with

VMware ESX Server

Applied Technology 7

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Dell AX4-5 Specifications Page 7