VMware virtualization solutions & Benefits of Virtualization

A virtual machine is a software computer that, like a physical computer, runs an operating system and applications. The hypervisor serves as a platform for running virtual machines and allows for the consolidation of computing resources.

Each virtual machine contains its own virtual, or software-based, hardware, including a virtual CPU, memory, hard disk, and network interface card.

Software called the hypervisor is installed on the physical hardware in a virtualized datacenter, and acts as a platform for virtual machines. ESXi is the hypervisor in a vSphere environment. The hypervisor provides physical hardware resources dynamically to virtual machines as needed to support the operation of the virtual machines. The hypervisor allows virtual machines to operate with a degree of independence from the underlying physical hardware. For example, a virtual machine can be moved from one physical host to another, or its virtual disks can be moved from one type of storage to another, without affecting the functioning of the virtual machine.

Because virtual machines are decoupled from specific underlying physical hardware, virtualization allows you to consolidate physical computing resources such as CPUs, memory, storage, and networking into pools of resources that can be dynamically and flexibly made available to virtual machines. With appropriate management software, such as vCenter Server, you can also use a number of features that increase the availability and security of your virtual infrastructure.

Server virtualization has been a revolutionary datacenter technology for those who administer and manage it. Unfortunately, not many companies are 100 percent virtualized. Although it has gained its market share for quite sometime, Server virtualization technology is far from being mastered, especially in large enterprises and datacenters. There are benefits in server virtualization technology that stakeholders and technical personnel must know.

1. Server consolidation & Cost savings
By collapsing physical servers into virtual servers and reducing the number of physical servers, your business will save in power, carbon footprint 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. End users will be more productive thanks to less downtime and much more. Workstation, server maintenance, upgrades and replacement are cheaper when you only have to take care of one physical workstation/server.

2. Improves routine IT administrative tasks
Nine out of ten IT departments spend at least half of their time doing routine administrative tasks. Virtualization can automate and simplify those administrative tasks, such as managing server workloads, monitoring performance, adding / removing hardware resources, organizing server roles, prototyping, moving and cloning.

3. Moving running virtual machines
You can move a running virtual machine from one host to another with no downtime. For example, VMwares vMotion can do this for you and that feature makes other features like distributed resource scheduler (DRS) and distributed power management (DPM) possible.

4. 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. With image-level backups, it makes disaster recovery a lot more easier thanks to snapshot technology. Any blocks that needs changing can be be backed in the middle of the day. With IGS and VMware virtualization you can backup a server in three different levels: server level, application level, file level; thus you can easily restore a single file, a single mailbox, a single mail or database, or even a whole server quite easy.

5. Virtual labs
By being able to create a virtual lab, you can test vSphere, Exchange, Active Directory and much more. This would have costed more if one is using physical servers.

6. Simplified disaster recovery
As virtual machines are hardware-independent, you can restore image-based backups on any hardware that is capable of running vSphere. Software features like site recovery manager (SRM) automate the testing and failover when a disaster strikes. IGS AVM Enforce managed services helps monitor your data centres from downtime and help restore your data should anything happens to your datas. 7. Improves server security

7. Improves server security
You can create virtual networks to isolate entire virtual server farms as needed, improving the security around your sensitive datas.

Source: VMware