Devesh IT Infra

Virtualization is the process of creating a “virtual” version of something, such as computing environments, operating systems, storage devices or network components, instead of utilizing a physical version for certain aspects of a company's infrastructure. Virtualization is not a new technology which has suddenly boomed and emerged resulting in a lot of people wanting to know about it. The technology has always been prevalent, but in the last few years it is has gained prominence and has been the talk of the town. What is Virtualization? Virtualization is a term used when creating a virtual environment for any program to run on an existing platform as a guest, without interfering or interrupting with the host platform’s services or programs It would be very easier to understand the concept with more details like it types and uses. Below are some Types of Virtualization: Operating System Virtualization Operating System Virtualization is a type of Virtual...

Microsoft Hyper-V and VMware ESX are hypervisor-based solutions. They install directly on the hardware and require no lower level OS beneath them, however, their architecture is quite different. It acts as the intermediary between the hardware and any virtual machines running on the server. VMware is a virtualization and cloud computing software provider based in Palo Alto, California. Founded in 1998, VMware is a subsidiary of Dell Technologies. VMware bases its virtualization technologies on its bare-metal hypervisor ESX/ESXi in the x86 architecture. VMware ESXi (formerly ESX) is an enterprise-class, type-1 hypervisor developed by VMware for deploying and serving virtual computers. ESXi replaces Service Console (a rudimentary operating system) with a more closely integrated OS.  Key: ESX/ESXi is the primary component in the VMware Infrastructure software suite. Microsoft Hyper-V, codenamed Viridian and formerly known as Windows Server Virtualization, is a nativ...

DNS is a protocol which provides name resolution whereas AD is a directory service which provides network resources information with administrative capability. DNS is the required part of AD and without DNS, AD is of no use. DNS servers simply resolve names into IP addresses or other types of similar requests. DNS is no Microsoft specific. DNS does NOT require Active Directory (though it might take advantage of it in a Microsoft environment.) Active Directory is an ACCOUNTS DATABASE from Microsoft. It requires a corresponding DNS zone to work correctly. Active Directory stores your user accounts, computer accounts, groups and other objects to allow or deny access to Microsoft domain resources. Key Point: Active Directory: Active Directory is a service (a database) designed for Windows Domain Networks. A server with AD service is termed as Domain Controller. It authenticates and authorizes all users and computers in a Windows domain type network—assi...

There are quite a number of backup types and terms used when it comes to backups of your digital content. This is a compilation of the most common types of backup with a brief explanation of their meaning, common examples, advantages, and disadvantages of each backup type. Full Backup Full backup is a method of backup where all the files and folders selected for the backup will be backed up. The advantage of this backup is restored are fast and easy as the complete list of files is stored each time. The disadvantage is that each backup run is time-consuming as the entire list of files is copied again. Key: Full backups take up a lot more storage space when compared to incremental or differential backups. Incremental backup Incremental backup is a backup of all changes made since the last backup. With incremental backups, one full backup is done first and subsequent backup runs are just the changes made since the last backup. The result is a much faster backup t...

It is very important to inform the key differences between Windows Server 2008 and Windows Server 2008 R2 to Windows Server 2012 and Server 2012 R2. Some of the differences which can be answered are: That's where the future is heading in Microsoft Windows Server Operating systems. Server 2008 version had both 32 bit and 64-bit releases, however, Server 2008 R2 started with migrating to completely 64-bit operating system releases for better performance and scalability , and Server 2012 completely is a 64-bit operating system. That’s where the future is heading in Microsoft Windows Server Operating systems. IIS 8: Windows Server 2012 features IIS 8 which brings its latest version with features like script pre-compilation, granular process throttling, centralized certificate management, etc. Power Shell 3.0: Power Shell is going to be the future of Microsoft. With Command line interfaces being less popular over the last decade, Microsoft is building up with newer vers...

Windows and Linux are both types of operating systems. The major difference that comes up while discussing Windows and Linux is the fact that Windows is a commercial operating system, while Linux is an open source operating system. Essentially, this means that Windows costs a lot of money while Linux is free. Some common reasons that many claims make Linux better than Windows: Linux is customizable whereas Windows is not. Linux has a very good security as you can log on to a Linux only with a user id and password. Linux can boot from either a primary partition or a logical partition inside an extended partition, whereas Windows must boot from a primary partition. Linux can be booted from any hard disk in the computer, whereas Windows must be booted from the first hard disk. Linux uses a normal forward slash, whereas Windows separates directories with a backslash. Linux file names are case sensitive. Key difference: The major difference that comes up while discussing...