Server Virtualization

Server virtualization is the partitioning of a physical server into smaller virtual servers to help maximize your server resources. In server virtualization the resources of the server itself are hidden, or masked, from users, and software is used to divide the physical server into multiple virtual environments, called virtual or private servers. This is in contrast to dedicating one server to a single application or task.

 

Benefits of Server Virtualization

Server consolidation By collapsing physical servers into virtual servers and reducing the number of physical servers, your company will reap a tremendous savings in power and cooling costs. Additionally, you'll be able to reduce the datacenter footprint which can include diesel generator costs, UPS costs, network switch costs, rack space and floor space
Stop server sprawl Before server virtualization, admins were forced to over-provision servers to ensure that they would meet user demand. With server virtualization, there is no more over-provisioning and you'll be able to perfectly size every virtual machine.
Do more with less With a lagging economy, IT departments and admins are forced to do more with less. Server virtualization makes admins more efficient and agile, allowing us to do more with less and look like the heroes of the IT department
Cost savings Not only will your company save on the physical server hardware, power and cooling of the servers that were consolidated, you'll also save on the time it used to take to administer physical servers. End users will be more productive thanks to less downtime and much more.
Moving running virtual machines Truly one of the more powerful features of server virtualization is the ability to move a running virtual machine from one host to another with no downtime. VMware's vMotion can do this for you and that feature makes other features like distributed resource scheduler (DRS) and distributed power management (DPM) possible
Increased uptime Features like vMotion, storage vMotion (svMotion), DRS, and VMware high availability (VMHA) all result in virtualized servers being up and running so much more than those same servers that were running directly on physical hardware
Image-based backup and restore By being able to back up and restore entire virtual machines, you can much more quickly back up the VMs and put them back, if needed. Additionally, image-level backups make disaster recovery so much easier. Even more, only changed blocks need to be backed up and backups can be done in the middle of the day thanks to snapshot technology.
Virtual labs By being able to create a virtual lab (a group of VMs on a private virtual network), you can test vSphere, Exchange, Active Directory and much more. Previously, this would have been cost prohibitive with physical servers.
Simplified disaster recovery Thanks to virtual machines being hardware-independent (not tied to a particular physical server) you can restore image-based backups on any hardware that is capable of running vSphere. Plus, software features like site recovery manager (SRM) automate the testing and failover when a disaster strikes
Allow us to move to the cloud By virtualizing our servers and making them portable, we are now ready to move them to a cloud hosting company when that technology matures and when we feel comfortable with it

 

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