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How is VMWare Kernel different from other kernels?VMWare kernel is a proprietary kernel as it is a registered kernel by VMWare Company and it is not based on any other kernel architecture or any other operating system. VMWare consists of a kernel that requires an operating system to boot it. A service console is provided when VMWare kernel is booted.
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What are the features provided by VMWare for easy access?VMWare provides several features to make it easy for the user to access and maintain. The features are as follows:
- VMWare provides web browser interface
- It provides easy to use wizard to configure the settings
- It provides tools to easily create hosts and maintain them from one place
- It provides easy maintenance of Virtual machines
- It provides easy graphics to configure VMWare settings for security.
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What are the features of VMWare Player?VMWare player is a stand-alone player that comes with the installation of VMWare. The features that make it more popular are as follows:
- Creation of virtual machines can be done with easy installation options. The creation and installation can be done directly to the system.
- VMWare Player can run any virtual machine and it can be used by anyone, anywhere. It allows quick and easy access, to take the advantage of security, portability and flexibility to manage the virtual machines.
- VMWare player allows sharing of virtual machines with other computers or users.
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What are the different components used in VMWare infrastructure?The different and major components used in VMWare infrastructure are as follows:
1. VMWare infrastructure consists of the lowest layer which acts as a ESX server host.
2. VMWare infrastructure also uses the virtual centre server that keeps tracks of all the VM related images and manages it from one point.
3. VMWare infrastructure (VI) client: this allows the client to interact with user's applications that are running on VMWare.
4. Web browser is used to access the virtual machines.
5. License server is used to create a server that provides licensing to the applications
6. Database servers are used to maintain a database.
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What are the benefits of virtualization?Virtualization is a creation of virtual machines and manage them from one place. It allows the resources to be shared with large number of network resources. Virtualization offers lots of benefits and they are as follows:
1. It helps in cost saving and allows easy maintenance. It saves more than 50% of total cost spend on IT
2. It allows multiple operating systems on one virtual platform.
3. It removes the dependency of heavy hardware to run the application.
4. It consolidate hardware to get higher productivity form fewer servers
5. It reduces the amount of space being taken by data centres
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What is the purpose of a Hypervisor?Hypervisor is a program that manages the virtual machine. It also acts like virtual machine manager that manages many virtual machines from one place. It allows multiple operating system to share single hardware host. Each operating system consists of its own defined space for memory and processor. It is used as a controller program to control host processors and resources. It separates out the layer between operating systems and thus, avoids conflicts.
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How is ESX server related to VMWare?ESX server is the enterprise edition of VMWare. It provides server virtualization platform that allows many operating systems to be shared together in a convenient way and consists of a centralized management platform known as Virtual Centre. ESX server is a virtualization technique used to create cloud applications and allows easy development of cloud platforms. ESX server is the upper layer of VMWare.
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What is the difference between ESX and GSX server?GSX server acts as type 2 hypervisor that gets installed on the host operating system’s hardware like windows and Linux. VMWare workstation gets mixed up with GSX server to provide more functionality to run your applications and operating systems. ESX server on the other hand, is type 1 hypervisor that runs its software directly on the system’s hardware and it doesn’t require any operating system prior to its installation. It is a level 0 hypervisor and it has its own operating system.
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What is the use of VMWare workstation?VMWare workstation is a software that allows user to run more than one operating systems simultaneously on a single system. It provides virtualization to run different applications on many operating systems at a single time. It saves the current configuration of operating system for the user in the form of virtual machines. VMWare allows users to view their application and work with so many different operating systems without even switching between the OSs.
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What are the different types of extensions used by VMWare?1. .log: is used to keep a log file to maintain a key for VMWare. This file allows user to see the problems encountered during any installation or while using VMWare.
2. .nvram: is used to store the state of the virtual machine in system’s BIOS.
3. .vmdk: is a virtual disk file that is used to store the content of virtual machine.
4. .vmsd: stores the information and metadata of the system’s snapshots.
5. .vmsn: is used to store the snapshot state. It stores both the running state and the time when you have taken it.
6. .vmss: stores the suspended state of a virtual machine.
7. .vmtm: stores the configuration team data.
8. .vmx: stores the primary configurations for the new virtual machine.
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How virtual machine’s concept is different for host and guest systems?Host system is the system that runs the operating system and over which the virtual platform can be installed. The virtual platform that runs another operating system is called as guest operating system. Host and guest can be connected with each other by using the virtual machines. A host system that runs all together on its own operating system is called as virtualization host.
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What are some major differences between VMWare Server and ESX server?- ESX server is a bare metal virtualization platform that is a physical server whereas, VMWare server needs an operating system to run itself.
- ESX server is type 1 hypervisor virtualization platform whereas, VMWare server is a type-2 hypervisor virtualization platform.
- ESX server gives better performance then VMWare server, due to less overhead.
- ESX server has more features than VMWare server.
- VMWare server is good to be used on small platforms with less resources but ESX server requires high specifications.
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What is the use of Para-virtualization?Para-virtualization is a virtualization technique that allows similar virtual machines to be created on particular hardware. It allows many operating systems to run on host hardware at the same time. It makes good use of resources like processors, memory and networking. It acts as a virtual machine monitor that yields high performance. It is used for development, testing and production of the virtual machines. It is also used during disaster recovery.
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Why is snapshot important in VMWare?A VMWare snapshot is nothing but a copy of virtual machine disk file and is used to restore a VM to a particular point in time when a failure or system error occurs.
VMware administrators can take multiple snapshots of a VM to create multiple possible point-in-time restore points.
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What are the disadvantages associated with VMWare virtualization platform?The disadvantages of VMWare virtualization platform are as follows:
- VMWare concept requires knowledge of the concept.
- It requires money to buy the resources for virtualization platform.
- It requires high end server with lots of high end configuration and specification that increases the cost.
- It requires different technologies that have to be implemented for the enterprise virtualization systems.
- Reliability decreases and cost increases in case of the system failures.
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