Virtual Server Environments

There are a whole host of reasons for migrating your datacenter to a VM virtual server environment.  Short of migrating to cloud server installations, VM virtual server environments are an extremely cost effective manner to build and maintain your company datacenter.

The virtual machines can run on the same physical machine (simplifying IT hardware management), yet appear as independent machines to the software you are running.  For all intents and purposes, except performance, the virtual machines are independent machines.  The host machines can be different (as indeed they often are when hardware is acquired at different times), but the virtual machines will appear to be the same across all of them.

 

Isolation
Virtualization allows isolation of applications from each other.  Virtual machines allow you to isolate each application (or group of applications) in its own sandbox environment. If one virtual machine goes down due to application or operating system error, the others continue running, providing services your business needs to function smoothly.

 

Standardization
Virtual machines provide standardization. A standardized hardware platform reduces support costs and increases the share of IT resources that you can devote to accomplishing goals that give your business a competitive advantage.

 

Consolidation
Consolidation of servers results in easier management and decreased hardware costs.  Using virtual machines will result in fewer physical machines. This is a great boon because setting up and maintaining physical hardware is messy and time-consuming, thus costly.

 

Ease of Testing
Virtual machines let you test scenarios easily. Most virtual machine software today provides snapshot and rollback capabilities, meaning you can stop a virtual machine, create a snapshot, perform more operations using the virtual machine, and then roll back again and again until you have finished your testing.  Virtual machines also facilitate scenario testing by enabling virtual networks.

 

Mobility
Virtual machines are easy to move between physical machines. Most of the virtual machine software on the market today stores a whole disk in the guest environment as a single file in the host environment, so transferring the virtual machine to another physical machine is as easy as moving the virtual disk file and some configuration files to the other physical machine.

 

High availability
VMware technology enables the live migration of running virtual machines. Virtual machines do not need to be shut down for the vast majority of physical server maintenance events or virtual-environment patching. The VMware infrastructure will detect physical server failures and automatically restart VM's on another host.

 

Dynamic load balancing
The VMware infrastructure automatically distributes the load across a cluster of physical servers to ensure the maximum performance of all running virtual machines.

 

Hardware flexibility
Changing the resources available to a virtual machine is possible through a simple configuration change. Storage, processor, and memory resources can be matched to actual resource usage throughout the lifetime of the hosted application.

 

Fast provisioning
Procuring a physical machine can take days or weeks. In contrast, a virtual machine can be provisioned in one business day.

 

Lower overall cost
Server consolidation reduces the cost of servers, makes more efficient use of data center space, and reduces energy consumption; all of these factors reduce the total cost of ownership.