How to Benefit from VMware vSphere 4.1 Features
If you're trying to decide if VMware vSphere 4.1 is right for your organization from a technological standpoint, consider these unique, high-value vSphere features before making your decision:
Memory overcommit: VMware vSphere 4 optimally allocates memory to virtual machines and leverages three different techniques to ensure that memory is available when needed. This capability recovers unused or wasted memory from virtual machines and allocates it to virtual machines with higher priority as required.
VMware vMotion live migration: VMware was the first to introduce live migration, which allows you to move running virtual machines from one ESX host to another without interruption. VMware also offers Storage vMotion, enabling migration of running virtual machines' disks from one vSphere datastore to another, without interruption to the virtual machine.
VMware High Availability (HA): vSphere offers High Availability capability that revives virtual machines from a failed ESX host by restarting them on another ESX host in a cluster.
Simple deployment of virtual machines (VM): VMware vCenter Server makes it easy for you to clone and customize virtual machines, giving each clone its own unique identity. This feature allows rapid deployment of virtual machines without building each one from scratch.

Cloud Computing Glossary
cloud computing
A networking solution in which everything — from computing power to computing infrastructure, applications, business processes to personal collaboration — is delivered as a service wherever and whenever you need.

Cloud Computing Glossary
cloud service
The delivery of software, infrastructure, or storage that has been packaged so it can be automated and delivered to customers in a consistent and repeatable manner.

Cloud Computing Glossary
deprovision
The release of cloud services that are no longer needed.

Cloud Computing Glossary
federating
Linking distributed resources together over the cloud.

Cloud Computing Glossary
hypervisor
An operating system that acts as a traffic cop, managing the various virtualization tasks in the cloud to ensure that they make things happen in an orderly manner.

Cloud Computing Glossary
multi-tenancy
The sharing of underlying resources by multiple companies over a cloud.

Cloud Computing Glossary
network attached store
Storage that has its own network address through which it is accessed by the network's workstation users. Acronym: NAS

Cloud Computing Glossary
service level agreement
A contract that stipulates the type of service you need from providers and what type of penalties would result from an unexpected business interruption. Acronym: SLA

Cloud Computing Glossary
solution stack
An integrated set of software that provides everything a developer needs to build an application.

Cloud Computing Glossary
storage area network
A storage systems that is flexible and scalable because it's available to multiple hosts at the same time. Acronym: SAN

Cloud Computing Glossary
vertical industry groups
Workgroups comprised of members from a particular industry such as technology and retail.

Cloud Computing Glossary
virtual memory
The portion of your hard drive that Windows uses to expand the available RAM

Cloud Computing Glossary
virtualization
Using computer resources to imitate other computer resources or whole computers to maximize performance and flexibility.