VMWare Server: Cloning a virtual machine in vSphere fails with the error Number of virtual devices exceeds the maximum for a given controller

I just happen to clone one new virtual server, but unluckily got this error.
Cloning fails at approximately 90% on the vSphere client with an error message:
 
Number of virtual devices exceeds the maximum for a given controller

Solution:
This issue occurs when the following check box is selected as a cloning option in vCenter 4.0 and vCenter 4.0 Update 1:

Edit Virtual hardware (Experimental) To resolve this issue, clone the virtual machine again, without selecting the Edit Virtual hardware (Experimental)option. 

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UBUNTU: How to clone Ubuntu Server using VMware?

1. Open VMware using vSphere Client console.
2. Right Click on UbuntuMaster Server  >  Clone  >  New Server Name
3. Edit Setting  >  Network Adapter  > Unthick  Device Status > Ok
4. Power On the New Server

..

VMware Server

Virtualization

• Virtualization lets you run multiple virtual machines on a single physical machine, with each virtual machine sharing the resources of that one physical computer across multiple environments.
• Different virtual machines can run different operating systems and multiple applications on the same physical computer.
• VMware virtualization works by inserting a thin layer of software directly on the computer hardware or on a host operating system. 
• Safely run several operating systems and applications at the same time on a single computer, with each having access to the resources it needs when it needs them.

VMware vSphere

VMware vSphere, the industry-leading virtualization platform for building cloud infrastructures, enables you to run business critical applications with confidence and respond to the business faster. vSphere accelerates the shift to cloud computing for existing datacenters and underpins compatible public cloud o"erings, forming the foundation for the industry's only hybrid cloud model.

VMware vSphere 5.0 has finally arrived and includes several new unique features - such as Storage DRS and Autodeploy - that deliver unprecedented value to VMware customers. Unlike prior versions, vSphere 5 supports only the ESXi hypervisor architecture, the only thin purpose-built hypervisor that does not depend on a general purpose operating system.

ESXi and ESX Architectures Compared

VMware ESXi is VMware’s most advanced hypervisor architecture. Learn about the differences with the previous generation architecture, VMware ESX:

Capability	ESX 4.1	ESXi 4.1	ESXi 5.0
Service Console	Present	Removed	Removed
Admin/config CLIs	COS + vCLI	PowerCLI + vCLI	PowerCLI + vCLI (enhanced)
Advanced Troubleshooting	COS	Tech Support Mode	ESXi Shell
Scripted Installation	Supported	Supported	Supported
Boot from SAN	Supported	Supported	Supported
SNMP	Supported	Supported (limited)	Supported
Active Directory	Integrated	Integrated	Integrated
HW Monitoring	3rd party agents in COS	CIM providers	CIM providers
Serial Port Connectivity	Supported	Not Supported	Supported
Jumbo Frames	Supported	Supported	Supported
Rapid deployment and central management of hosts via Auto Deploy	Not Supported	Not Supported	Supported
Custom image creation and management	Not Supported	Not Supported	Supported
Secure syslog	Not Supported	Not Supported	Supported
Management interface firewall	Supported	Not Supported	Supported

See the KB article for a detailed comparison.

Read more comparison.

Technical Advantages

1. Is built on a robust, proven foundation
2. Delivers a complete virtualization platform from desktop through the datacenter out to the public cloud
3. Provides the most comprehensive virtualization and cloud management
4. Integrates with your overall IT infrastructure
5. Is proven over 190,000 customers

And best of all, VMware delivers while providing

6. Low total-cost-of-ownership (TCO)

Cost-per-application is a more accurate metric when comparing costs of different virtualization offerings. 
Density matters in a many-to-one relationship.

Read more here >>