I am writing this post especially for those who are new to ESXi or VMware vSphere.
Very first question which will struck your mind for a new comer in VM world, what the heck is VMware vSphere… hmm…very tough question, Don’t worry I am trying hard to explain you.
“VMware vSphere is the industry’s most complete, scalable and powerful virtualization platform, delivering the infrastructure and application services that organizations need to transform their information technology and deliver IT as a service” Quoted by VMware.
In our simple words it’s a complete solution or kit for your Virtualization Platform , contains many amazing Infrastructure level services.
I have made easy for you to understand mentioned below are key components what makes it called as VMware vSphere:
1. VMware ESXi and ESX hypervisor architectures
Provides a High Performance virtualization layer that allows multiple Virtual Machines to share hardware resources from a Single Server (of course it will be a High Performance and High configuration server)
2. VMware vCenter Server
A Central point for configuring, provisioning and managing virtualized IT environment, it also provides datacenter services such as access control, performance monitoring and alarm management.
3. VMware vSphere Client
A interface which have to be install and that enables users to connect remotely to vCenter Server or ESX or ESXi from any windows based PC
4. VMware vSphere Web Client
Another interface that enables users to connect with vCenter Server
5. VMware Virtual Machine
Simply a Virtual PC, which is made up of set of files, utilizes the Physical hardware of ESX or ESXi Hypervisor
6. vSphere Virtual Machine File System (VMFS)
High performances file system for ESXi or ESX Virtual Machines
7. VMware vMotion
This feature allows to migrate powered on virtual machines from one Physical Server to another with Zero Down time, continous service availability.
8. VMware Storage vMotion
Enables the migration of virtual machine files and virtual disks of a virtual machine from one Datastore to another without service interruption while the Virtual Machine is running (Powered ON)
9. vSphere High Availability (HA)
This feature provides High Availability for virtual machines, if a server fails, which is hosting the virtual machines, Virtual machines are restarted on other available servers that have spare capacity.
10. vSphere Distributed Resource Scheduler (DRS)
This feature allocates and balances capacity dynamically across the collections of hardware resources for virtual machines. This feature also includes distributed power management (DPM) that enables or helps datacenter to reduce its power consumption.
11. vSphere Fault Tolerance
Provides continuous availability by protecting a virtual machine with a live copy, When this feature is enabled for a virtual machine, a secondary copy of the original (Primary VM) is created on different Host. If the primary VM goes down due to any reason the secondary VM becomes immediately active. It’s a amazing feature.
12. Host Profiles
A feature that simplifies host configurations management through user-defined configuration policies
Hmm,, I think I have made you very clear, now if someone talks about vSphere infront of u, you will be able to understand… cheers.. )
Please ignore if any grammatical mistakes found and thanks for Reading my post.