SYS-CON MEDIA Authors: Liz McMillan, Carmen Gonzalez, Zakia Bouachraoui, Roger Strukhoff, David Linthicum

Related Topics: Containers Expo Blog, @CloudExpo

Containers Expo Blog: Article

Is Virtualization Really a Base for Cloud?

Virtualization is mandatory or not for cloud

Many of you have heard this question and have different thoughts on using virtualization in cloud. While some professionals say that virtualization is not mandatory for cloud and other say that Virtualization is the base for cloud. I am trying to answer the above question by providing a rationale for using virtualization in cloud.

Before entering into a debate, let me explain Virtualization concept in simple terminology.

Server Virtualization OS segregates the interaction between hardware and OS. This will help us to keep independent OSs above a single hardware. The resource management will be taken care by virtualization OS.

Resource pool is concepts inside the virtualization layer which will help to combine the resources (Memory and CPU) from multiple hardware's and show that as single unit to Guest OS (VM). Many virtualized servers can be added under one virtual cluster which will help us to have a larger resource pool. Larger Resource pool means we will have more number of GB's (RAM) and GHz (CPU). The resource allocation to resource pool will be based on the business and application requirement.

This diagram is simplified view for Virtualized Server. Virtualization OS sits above the Physical server hardware. Guest OS will reside above Virtualization OS and all those Guest OS will work independently like a separate physical server. Guest OS instance is also called as Virtual Machine (VM). Applications are hosted inside the guest OS (Virtual Machine) and it will work like normal physical servers. VM and its applications are not aware that they are virtually hosted. Users can access the application as per normal process.

IT infrastructure is using the virtualization technology to achieve more cost benefits as it will help to consolidate and optimize the resource utilization.

Some of the benefits of virtualization are listed below:

  • High availability
  • Rapid Provisioning
  • Centralized management
  • Secured between VM's (Server's)
  • Pool of resources and effective resources management
  • Effective server hardware utilization
  • Easy Monitoring
  • Add and remove the server hardware without downtime
  • On-demand computing
  • Scalability
  • Elasticity

Cloud will have all of the above benefits along with Self-Provisioning, Automation and Metering & billing. Scalability, metering   and elasticity are the prime features in cloud model which will help to provide the "on demand" and "pay as you go" based cloud service. By stating that, virtualization covers maximum of cloud features thus its providing base for cloud. Virtualization is a major player in Private cloud and IaaS cloud delivery model.

This diagram depicts the cloud environment with multiple virtual servers and multiple corporate users. We can host many virtualized servers in cloud and it will provide the pool of resources to its users. Virtualization cluster and resource pool will help us to provide the distributed resource to VM's based on the requirement. The users can be from one or more Companies. The allocation/de-allocation of resources will happen automatically based on the request from user. The cloud environment is accessible over internet and it has high scalability and availability. The Cloud Billing is based on the required resources, availability level and SLA. Cloud user will pay only for what they have used or requested.

Companies movement towards cloud is to get major benefits like cost reduction and liability of IT infrastructure. Cloud service delivery model delivers the power of virtualization along with the additional features like self-provisioning, Internet accessibility and metering & billing. Virtualization needs to be leverage to build a perfect cost effective cloud infrastructure.

Recently I read a catchy statement from one article which is "Why buy a plane when you can just reserve a seat on a flight?" Recent days, this is the mind set of all the IT enabled companies and it will give an easy understanding on cloud computing. If you want me to explain this - "Why you need to buy a datacenter when you have option to reserve a server (IaaS)/Platform (PaaS)/Application (SaaS)?"  If the options are available to get the required services like IaaS,PaaS and SaaS then why do we need to own infrastructure which is a huge liability, from both CAPEX and OPEX, instead invest on the cloud were we could utilize the existing CAPEX and increase the OPEX for better and smarter infrastructure.

Now the following question arises: Is it possible to make a cloud environment without virtualization? The answer is yes, but how much benefit you will get and how it differs from the present scenario is the question. If we build a cloud without virtualization then it will only achieve the cost benefit using Application level consolidation, Self-Provisioning, and automation and metering& billing but this benefit is very modest compared to the Virtualized cloud environment. Virtualized cloud environment will provide the features like High availability, Rapid Provisioning, Centralized management, Pool of resources thus effective resources management, Effective server hardware utilization, Add and remove the server hardware without downtime, Scalability and Elasticity.

Sharing the recent survey information to understand the ratings of cloud and virtualization-CIO's view. Based on the Gartner survey of CIO's -2011, cloud computing placed at top in global ranking while virtualization placed in second place.  (http://www.gartner.com/it/page.jsp?id=1729814)

Also note that, whatever I have explained here is more related to server virtualization and we have other virtualization options like Storage, Network, application and desktop which will provide much more benefit to Virtualized cloud environment.

As you would have guessed correctly, my answer for "Is virtualization really a base for cloud?" is "yes" virtualization is base for cloud. I have explained the rationale behind my stand which would have given you more clarity and insight.

More Stories By Kumaresan Nagarethinam

Kumaresan Nagarethinam is a Senior Technology Architect with Cloud Practice of Infosys Ltd. He has 12 years of experience in the IT Infrastructure domain, both in consulting and implementation. His areas of expertise include Cloud/Virtualisation Consulting, IT Infrastructure Design and Project Management. He is specializes in VMware and cloud infrastructure design, datacenter design and implementation. He has the certifications on VCP4,VSP4,VTSP4,IBM Cloud Computing Infrastructure Architect V1,IBM Cloud-Solution Advisor-V1,ITIL and CLP.

Latest Stories
The platform combines the strengths of Singtel's extensive, intelligent network capabilities with Microsoft's cloud expertise to create a unique solution that sets new standards for IoT applications," said Mr Diomedes Kastanis, Head of IoT at Singtel. "Our solution provides speed, transparency and flexibility, paving the way for a more pervasive use of IoT to accelerate enterprises' digitalisation efforts. AI-powered intelligent connectivity over Microsoft Azure will be the fastest connected pat...
There are many examples of disruption in consumer space – Uber disrupting the cab industry, Airbnb disrupting the hospitality industry and so on; but have you wondered who is disrupting support and operations? AISERA helps make businesses and customers successful by offering consumer-like user experience for support and operations. We have built the world’s first AI-driven IT / HR / Cloud / Customer Support and Operations solution.
ScaleMP is presenting at CloudEXPO 2019, held June 24-26 in Santa Clara, and we’d love to see you there. At the conference, we’ll demonstrate how ScaleMP is solving one of the most vexing challenges for cloud — memory cost and limit of scale — and how our innovative vSMP MemoryONE solution provides affordable larger server memory for the private and public cloud. Please visit us at Booth No. 519 to connect with our experts and learn more about vSMP MemoryONE and how it is already serving some of...
Darktrace is the world's leading AI company for cyber security. Created by mathematicians from the University of Cambridge, Darktrace's Enterprise Immune System is the first non-consumer application of machine learning to work at scale, across all network types, from physical, virtualized, and cloud, through to IoT and industrial control systems. Installed as a self-configuring cyber defense platform, Darktrace continuously learns what is ‘normal' for all devices and users, updating its understa...
Codete accelerates their clients growth through technological expertise and experience. Codite team works with organizations to meet the challenges that digitalization presents. Their clients include digital start-ups as well as established enterprises in the IT industry. To stay competitive in a highly innovative IT industry, strong R&D departments and bold spin-off initiatives is a must. Codete Data Science and Software Architects teams help corporate clients to stay up to date with the mod...
As you know, enterprise IT conversation over the past year have often centered upon the open-source Kubernetes container orchestration system. In fact, Kubernetes has emerged as the key technology -- and even primary platform -- of cloud migrations for a wide variety of organizations. Kubernetes is critical to forward-looking enterprises that continue to push their IT infrastructures toward maximum functionality, scalability, and flexibility. As they do so, IT professionals are also embr...
Platform9, the leader in SaaS-managed hybrid cloud, has announced it will present five sessions at four upcoming industry conferences in June: BCS in London, DevOpsCon in Berlin, HPE Discover and Cloud Computing Expo 2019.
At CloudEXPO Silicon Valley, June 24-26, 2019, Digital Transformation (DX) is a major focus with expanded DevOpsSUMMIT and FinTechEXPO programs within the DXWorldEXPO agenda. Successful transformation requires a laser focus on being data-driven and on using all the tools available that enable transformation if they plan to survive over the long term. A total of 88% of Fortune 500 companies from a generation ago are now out of business. Only 12% still survive. Similar percentages are found throug...
When you're operating multiple services in production, building out forensics tools such as monitoring and observability becomes essential. Unfortunately, it is a real challenge balancing priorities between building new features and tools to help pinpoint root causes. Linkerd provides many of the tools you need to tame the chaos of operating microservices in a cloud native world. Because Linkerd is a transparent proxy that runs alongside your application, there are no code changes required. I...
In his general session at 21st Cloud Expo, Greg Dumas, Calligo’s Vice President and G.M. of US operations, discussed the new Global Data Protection Regulation and how Calligo can help business stay compliant in digitally globalized world. Greg Dumas is Calligo's Vice President and G.M. of US operations. Calligo is an established service provider that provides an innovative platform for trusted cloud solutions. Calligo’s customers are typically most concerned about GDPR compliance, application p...
Modern software design has fundamentally changed how we manage applications, causing many to turn to containers as the new virtual machine for resource management. As container adoption grows beyond stateless applications to stateful workloads, the need for persistent storage is foundational - something customers routinely cite as a top pain point. In his session at @DevOpsSummit at 21st Cloud Expo, Bill Borsari, Head of Systems Engineering at Datera, explored how organizations can reap the bene...
"NetApp's vision is how we help organizations manage data - delivering the right data in the right place, in the right time, to the people who need it, and doing it agnostic to what the platform is," explained Josh Atwell, Developer Advocate for NetApp, in this SYS-CON.tv interview at 20th Cloud Expo, held June 6-8, 2017, at the Javits Center in New York City, NY.
Druva is the global leader in Cloud Data Protection and Management, delivering the industry's first data management-as-a-service solution that aggregates data from endpoints, servers and cloud applications and leverages the public cloud to offer a single pane of glass to enable data protection, governance and intelligence-dramatically increasing the availability and visibility of business critical information, while reducing the risk, cost and complexity of managing and protecting it. Druva's...
Kubernetes as a Container Platform is becoming a de facto for every enterprise. In my interactions with enterprises adopting container platform, I come across common questions: - How does application security work on this platform? What all do I need to secure? - How do I implement security in pipelines? - What about vulnerabilities discovered at a later point in time? - What are newer technologies like Istio Service Mesh bring to table?In this session, I will be addressing these commonly asked ...
BMC has unmatched experience in IT management, supporting 92 of the Forbes Global 100, and earning recognition as an ITSM Gartner Magic Quadrant Leader for five years running. Our solutions offer speed, agility, and efficiency to tackle business challenges in the areas of service management, automation, operations, and the mainframe.