6 Responses Nov 13

Dushyanth Work:

Types of Cloud Service Delivery

Cloud computing is one of the modern tools which have been used t provide services through the internet. A cloud computing system will include tools and applications such as servers, databases, networking, and software. Today, most businesses prefer to keep their files in cloud-based storage rather than in hard drives or local storage devices. Their preference is due to more accessible access to information and the ability to save information in a remote database. All that is required for the business to save their information in a cloud database is an electronic device that can connect to the internet, has a program that can run it as well as the availability of the internet (Guo & Shu, 2018). Cloud computing has become a popular option for organizations to store their data, which has led to cost-saving, efficiency speed, and security, which have all resulted in increased productivity. Business managers must understand the types of cloud computing options available to them and their impact on the business.

Types of Cloud Deployment

Public Cloud

Cloud deployment illustrates the way cloud platform is implemented, hosted, and how it is accessed. All public cloud deployment operates in the same principle. Therefore they all can visualize computing powers from the servers into a soft driven software that allow data processing and storage. Linthicum (2017) comments that “Artificial intelligence (AI) is best leveraged for specific types of applications that will benefit the most from this technology.”Common examples of public cloud include those offered by Google or Microsoft. Organizations that provide public cloud provide both service and infrastructure that can be shared by all customers who use the site. Therefore, they provide a massive amount of space that can be easily scaled. Most often, organizations that have a public cloud are required to design their portable applications. It can be easier to move these applications for private cloud production.

Private Cloud

A single organization normally uses it, and it resides behind a firewall. In this case, a business will require a single on-premises cloud used by businesses with very tight requirements. Hence, authorized users will access, utilize, and store data in the cloud from anywhere, just like the way it would happen if the business were using the public cloud. He (2015) further adds that “there is a need to leverage this resource where communities are created and maintained.”  However, the public cloud's difference is that no one else can utilize the resource because it is patented for use by a single user (James, 2016). Unlike the public cloud, the private cloud will offer security and control; however, the business that owns the cloud facility will be responsible for both infrastructure and software. Therefore, it is cheaper than the public cloud.

Hybrid Cloud

The hybrid cloud is unique because it combines both public and private clouds. IT managers design it to allow the two platforms to interact simultaneously with data moving smoothly from one to the other. Besides, Linthicum (2016) says that the "hybrid cloud model provides the best of the private and public worlds, combining the economies and efficiencies of public cloud computing with the security and control of private cloud computing.”The main reason why organizations prefer a hybrid cloud is because it can provide scalable computing powers that are available when using the public cloud. At the same time, provide security and control found in the private cloud. Thus, data can be easily stored behind the firewall with encryption protocols available in a private cloud.

References

Guo, H., & Shu, M. (2018). Research on the Cloud Service Description Model for Cloud Service Composition in Cloud Manufacturing System. Journal of Physics: Conference Series, 1087(5), 5-6.

He, Y. (2015). Description of a Cloud Based Private Social Network Security Scheme. International Journal of Information and Education Technology, 5(7), 532-537.

James, R. (2016). IEEE Cloud Computing Call for Papers Connecting Fog and Cloud Computing. IEEE Cloud Computing, 3(4), 204.

Linthicum, D. (2016). Emerging Hybrid Cloud Patterns. IEEE Cloud Computing, 3(1), 88-91.

Linthicum, D. (2017). Making Sense of AI in Public Clouds. IEEE Cloud Computing, 4(6), 70-72.

Preethi Work:

Project Topic: What is a hypervisor? Differentiate between type I and type II. What are the security vulnerabilities of each?

In the present scenario, cloud computing is used by everyone for their business. Along with the cloud, Server virtualization is also popular in the IT environment. The implementation and its craze are growing day by day in enterprise environments. In detail, Server Virtualization allows us to run different operating systems that are running isolated applications on one server. And the good part is they are using the same physical resources. The Virtual machines run on a devoted server in which both system and network administrator for each sever they must run on. By this method, they will decrease the number of physical servers needed and thereby saves us time from finding pinpoint issues. VM world is always a tremendous opportunity for us to interact with customers and showcase our VMware integrated portfolio. With VMware running on PowerEdge servers, customers can seamlessly scale their infrastructure to meet different workload requirements, preparing them to meet the rapidly changing demands of both today and tomorrow.

“A hypervisor, also known as a virtual machine monitor or VMM, is software that creates and runs virtual machines (VMs). A hypervisor allows one host computer to support multiple guests VMs by virtually sharing its resources, such as memory and processing.” (VMware) Thus, a hypervisor is an important part of software which makes Virtualization possible. From authentic software, it extracts the guest machines and the operating system it runs on. It generates a virtualization layer that splits CPU/Processors, RAM, and any other physical resources from the virtual machines we create. The machines we do install on the hypervisor are called a Host machine and others which run on top of them are known as Guest virtual machines. Hypervisors imitates the available resources, so that guest machines can utilize them.

 There are two types of Hypervisors: Type1 which is also known as bare metal or native, runs on bare metal and Type II which is also called as hosted hypervisors, runs on OS. Type1 hypervisors are considered as the most efficient and best performing available for enterprise computing. VMware ESXi, Microsoft Hyper-V Server, and open-source KVM are few examples. Type II is installed on top of the existing OS and depends on host machines to manage calls to CPU, memory storage, and network sources. VMware Fusion, Oracle VM VirtualBox, Parallels are few examples. “For some developer environments, like where access to multiple OSs and their variants is required, Type 2 hypervisors are a better option. On devices not dedicated to the VMs Host role, hosted hypervisors are recommended.” (Taylor)

In recent times, Type I hypervisors are used in production and it has got high performance, for low overhead and few IT environments use Type II because of its low cost, ease of installation. Type II is more suitable for home labs and other test environments. Type I is very secure as it runs directly on the physical hardware without any OS. So, they are free from malicious software activities as VM is separately established. Type II is less secured as it is dependent on OS. If any virus attacks the OS, the whole system including the protected hypervisor is also affected. Type I is much faster and scalable than Type II as Type II is dependent on system speed. The cost-effective part is licensing and different vendors quote various prices according to their needs. “Choosing the right type of hypervisor strictly depends on your individual needs. The first thing you need to keep in mind is the size of the virtual environment you intend to run.” (Simic, 2019)

References

Simic, S. (2019). What Is A Hypervisor? Types Of Hypervisors 1 & 2. Retrieved from: https://phoenixnap.com/kb/what-is-hypervisor-type-1-2.

Taylor, K. (n.d.). Hypervisor Type 1 vs. Type 2: Difference Between the Two. Retrieved from: https://www.hitechnectar.com/blogs/hypervisor-type-1-vs-type-2/.

VMware. (n.d.). Hypervisor. Retrieved from: https://www.vmware.com/topics/glossary/content/hypervisor.