You can get it downloaded and installed for free. It allows you to do more with less. It's easy to use and simple to configure. There are hardware vendor specific builds of the software, increasing visibility and manageability of the product.
Improvements to My Organization
We have less physical servers to monitor and put under warranty.
Use of Solution
10 plus years in various forms as GSX, ESX and now ESXi.
Deployment options are varied with ESXi, so depending on what you're trying to achieve within your business.
Due to the multitude of configuration options, you can occasionally experience compatibility issues with 3rd party storage vendors such as NetApp which recently had a known issue with NFS reporting all ports down.
Never encountered any scalability issues with this product. It is truly enterprise.
Customer Service and Technical Support
Customer Service: Good to excellent.Technical Support: Good to Excellent depending on what engineer is assigned to you.
I have tried other hypervisor technologies including XenServer, Hyper V, KVM, Parallels and virtual box. They all do the same thing, but ESXi has been doing it better for longer.
Exceedingly simple setup. You can make it more complex depending how truly enterprise your needs are, like stateless implementations of ESXi.
Reduced Electricity Bills, reduced hardware and warranty costs. Reduced server implementation time. Increased management and availability of corporate services.
Other Solutions Considered
Not on this occasion but I have assessed other hypervisors.
Assess why you think virtualisation is the answer to your problem. Research hypervisor choices, perform Proof of Concept exercises with those products you choose to assess and most of all think about the legacy of what you're doing. i.e. what do you want to leave behind?
Disclosure: I am a real user, and this review is based on my own experience and opinions.
Jun 23 2014