The document discusses virtualization and its role in enabling cloud computing. It describes how virtualization abstracts physical computing resources into logical units, allowing single physical machines to appear as multiple virtual machines. This enables more efficient utilization of hardware resources. The document outlines different types of virtualization including server, network, storage and discusses how virtualization of CPU, memory and I/O allows virtual machines to run concurrently on a single physical host.
The virtualization can be described in a generic way as a separation of the service request from the underlying physical delivery of that service. In computer virtualization, an additional layer called hypervisor is typically added between the hardware and the operating system. The hypervisor layer is responsible for both sharing of hardware resource and the enforcement of mandatory access control rules based on the available hardware resources.
There are three types of virtualization: full virtualization, para-virtualization and operating system level (OS-level) virtualization.
Virtualization Explained | What Is Virtualization Technology? | Virtualizatio...Simplilearn
In this presentation on virtualization explained, we will understand what is virtualization technology and how it is helpful to us during professional as well as personal work. In this virtualization tutorial, we will understand how virtualization takes place and what software makes virtualization possible and manage different virtual instances, along with the benefits of virtualization.
The topics covered in this what is virtualization presentation are:
1. What Is Virtualization?
2. What Is a Virtual Machine(VM)?
3. Role and Types of Hypervisor
4. Types of Virtualization
5. Benefits of Virtualization
Virtualization is the process of designing a virtual layer to allow one or more operating systems to work on a single physical system known as the host and virtual operating system as a guest. This virtual layer is created through software known as the hypervisor, and it also manages the resource distribution among the virtual machines.
About Simplilearn AWS Cloud Architect Program:
This AWS Cloud Architect Certification Course will make you an expert in Amazon Web Services (AWS). In this program, you will become familiar with architectural principles and services of AWS, learn how to design and deploy highly scalable and fault-tolerant applications on AWS, implement AWS security and testing, and become an expert in AWS components such as S3 and CloudFormation.
What are the course objectives for this AWS Cloud Architect training?
This AWS Cloud Architect certification training will enable you to master the core skills required for designing and deploying dynamically scalable, highly available, fault-tolerant, and reliable applications on one of the top cloud platform providers—Amazon Web Services (AWS). You will learn the fundamentals of the Amazon Web Services (AWS) cloud platform and become an expert in understanding AWS terminologies, concepts, benefits, and deployment options to meet your business requirements. You will also get an overview of AWS DMS (Database Migration Service), how the AWS Schema Conversion tool works, and the various types of AWS DMS; how to build, implement, and manage scalable and fault-tolerant systems on AWS; and, how to select the appropriate AWS service based on data, compute, database, and security requirements.
Learn more at: https://www.simplilearn.com/aws-cloud-architect-certification-training-course
The process of virtualization enables the creation of virtual forms of servers, applications, networks and storage. The four main types of virtualization are network virtualization, storage virtualization, application virtualization and desktop virtualization.
In a general sense, virtualization, is the creation of a virtual, rather than an actual, version of something.
For example:
Google Earth, It is a virtual image of Earth which hold every detail about earth.
From a computing perspective, we might have already done some virtualization if you’ve ever partitioned a hard disk drive into more than one “virtual” drive.
Virtualization in a computing environment can be present in many different forms, some of which are:
Hardware virtualization
Storage and data virtualization
Software virtualization
Network virtualization
Virtualization 2.0: The Next Generation of VirtualizationEMC
In this paper, Frost & Sullivan define virtualization 2.0 and show the enhanced benefits that the latest virtualization platforms can deliver to the business.
You will learn how the virtualization 2.0 can:
- Improve your business agility, productivity, and application performance
- Provide new benefits of next generation virtualization platforms, including capacity management, predicitive analytics and data protection
The virtualization can be described in a generic way as a separation of the service request from the underlying physical delivery of that service. In computer virtualization, an additional layer called hypervisor is typically added between the hardware and the operating system. The hypervisor layer is responsible for both sharing of hardware resource and the enforcement of mandatory access control rules based on the available hardware resources.
There are three types of virtualization: full virtualization, para-virtualization and operating system level (OS-level) virtualization.
Virtualization Explained | What Is Virtualization Technology? | Virtualizatio...Simplilearn
In this presentation on virtualization explained, we will understand what is virtualization technology and how it is helpful to us during professional as well as personal work. In this virtualization tutorial, we will understand how virtualization takes place and what software makes virtualization possible and manage different virtual instances, along with the benefits of virtualization.
The topics covered in this what is virtualization presentation are:
1. What Is Virtualization?
2. What Is a Virtual Machine(VM)?
3. Role and Types of Hypervisor
4. Types of Virtualization
5. Benefits of Virtualization
Virtualization is the process of designing a virtual layer to allow one or more operating systems to work on a single physical system known as the host and virtual operating system as a guest. This virtual layer is created through software known as the hypervisor, and it also manages the resource distribution among the virtual machines.
About Simplilearn AWS Cloud Architect Program:
This AWS Cloud Architect Certification Course will make you an expert in Amazon Web Services (AWS). In this program, you will become familiar with architectural principles and services of AWS, learn how to design and deploy highly scalable and fault-tolerant applications on AWS, implement AWS security and testing, and become an expert in AWS components such as S3 and CloudFormation.
What are the course objectives for this AWS Cloud Architect training?
This AWS Cloud Architect certification training will enable you to master the core skills required for designing and deploying dynamically scalable, highly available, fault-tolerant, and reliable applications on one of the top cloud platform providers—Amazon Web Services (AWS). You will learn the fundamentals of the Amazon Web Services (AWS) cloud platform and become an expert in understanding AWS terminologies, concepts, benefits, and deployment options to meet your business requirements. You will also get an overview of AWS DMS (Database Migration Service), how the AWS Schema Conversion tool works, and the various types of AWS DMS; how to build, implement, and manage scalable and fault-tolerant systems on AWS; and, how to select the appropriate AWS service based on data, compute, database, and security requirements.
Learn more at: https://www.simplilearn.com/aws-cloud-architect-certification-training-course
The process of virtualization enables the creation of virtual forms of servers, applications, networks and storage. The four main types of virtualization are network virtualization, storage virtualization, application virtualization and desktop virtualization.
In a general sense, virtualization, is the creation of a virtual, rather than an actual, version of something.
For example:
Google Earth, It is a virtual image of Earth which hold every detail about earth.
From a computing perspective, we might have already done some virtualization if you’ve ever partitioned a hard disk drive into more than one “virtual” drive.
Virtualization in a computing environment can be present in many different forms, some of which are:
Hardware virtualization
Storage and data virtualization
Software virtualization
Network virtualization
Virtualization 2.0: The Next Generation of VirtualizationEMC
In this paper, Frost & Sullivan define virtualization 2.0 and show the enhanced benefits that the latest virtualization platforms can deliver to the business.
You will learn how the virtualization 2.0 can:
- Improve your business agility, productivity, and application performance
- Provide new benefits of next generation virtualization platforms, including capacity management, predicitive analytics and data protection
Class lecture by Prof. Raj Jain on Server Virtualization. The talk covers Virtualization, 5 Reasons to Virtualize, Advantages of Virtualization, Virtualization in Computing, Server Virtualization Concepts, Levels of Virtualization, Operating System-Level Virtualization, Desktop Virtualization, Thin Client, Application Virtualization, Service Virtualization, User Experience Virtualization, Related Concepts, Hardware Emulation, Hardware Assisted Virtualization, Parallel Virtual Machines, Paravirtualization, Virtualization Products, VMware ESX/ESXi, VMware vMotion, VMware ThinApp, View, Fusion, VMware Workstation and Player, VMware vSphere, File System for VMs, Open Virtualization Format (OVF), PCoIP Protocol, Related Web Sites. Video recording available in YouTube.
This presentation tries to explain basics of virtualization, what is server virtualization ? why is it important ? how it is done ? What are the limitations and risks associated with it ?
Virtual versions of servers, applications, networks and storage can be created through virtualization. Its main types include operating system virtualization (VMs), hardware virtualization, application-server virtualization, storage virtualization, network virtualization, administrative virtualization and application virtualization.
The benefits of employing virtualization in the corporate data center are compelling – lower operating
costs, better resource utilization, increased availability of critical infrastructure to name just a few. It is an
apparent “no brainer” which explains why so many organizations are jumping on the bandwagon. Industry
analysts estimate that between 60 and 80 percent of IT departments are actively working on server
consolidation projects using virtualization. But what are the challenges for operations and security staff
when it comes to management and ensuring the security of the new virtual enterprise? With new
technology, complexity and invariably new management challenges generally follow.
Over the last 18 months, Prism Microsystems, a leading security information and event management
(SIEM) vendor, working closely with a set of early adopter customers and prospects, has been working on
extending the capability of EventTracker to provide deep support for virtualization, enabling our customers
to get the same level of security for the virtualized enterprise as they have for their non-virtualized
enterprise. This White Paper examines the technology and management challenges that result from
virtualization, and how EventTracker addresses them.
Virtualization, A Concept Implementation of CloudNishant Munjal
This presentation will guide through deploying virtualization in linux environment and get its access to another machine followed by virtualization concept.
Class lecture by Prof. Raj Jain on Server Virtualization. The talk covers Virtualization, 5 Reasons to Virtualize, Advantages of Virtualization, Virtualization in Computing, Server Virtualization Concepts, Levels of Virtualization, Operating System-Level Virtualization, Desktop Virtualization, Thin Client, Application Virtualization, Service Virtualization, User Experience Virtualization, Related Concepts, Hardware Emulation, Hardware Assisted Virtualization, Parallel Virtual Machines, Paravirtualization, Virtualization Products, VMware ESX/ESXi, VMware vMotion, VMware ThinApp, View, Fusion, VMware Workstation and Player, VMware vSphere, File System for VMs, Open Virtualization Format (OVF), PCoIP Protocol, Related Web Sites. Video recording available in YouTube.
This presentation tries to explain basics of virtualization, what is server virtualization ? why is it important ? how it is done ? What are the limitations and risks associated with it ?
Virtual versions of servers, applications, networks and storage can be created through virtualization. Its main types include operating system virtualization (VMs), hardware virtualization, application-server virtualization, storage virtualization, network virtualization, administrative virtualization and application virtualization.
The benefits of employing virtualization in the corporate data center are compelling – lower operating
costs, better resource utilization, increased availability of critical infrastructure to name just a few. It is an
apparent “no brainer” which explains why so many organizations are jumping on the bandwagon. Industry
analysts estimate that between 60 and 80 percent of IT departments are actively working on server
consolidation projects using virtualization. But what are the challenges for operations and security staff
when it comes to management and ensuring the security of the new virtual enterprise? With new
technology, complexity and invariably new management challenges generally follow.
Over the last 18 months, Prism Microsystems, a leading security information and event management
(SIEM) vendor, working closely with a set of early adopter customers and prospects, has been working on
extending the capability of EventTracker to provide deep support for virtualization, enabling our customers
to get the same level of security for the virtualized enterprise as they have for their non-virtualized
enterprise. This White Paper examines the technology and management challenges that result from
virtualization, and how EventTracker addresses them.
Virtualization, A Concept Implementation of CloudNishant Munjal
This presentation will guide through deploying virtualization in linux environment and get its access to another machine followed by virtualization concept.
Basics of Cloud Computing and tools required to get into the cloud world. Simply put, cloud computing is the delivery of computing services—including servers, storage, databases, networking, software, analytics, and intelligence—over the Internet (“the cloud”) to offer faster innovation, flexible resources, and economies of scale.
Server virtualization has forever changed the way we think about compute resources. Traditional storage architecture is a mismatch for today's virtualized environments. Gridstore's unique and patented architecture solves this problem and increases performance while decreasing costs. Learn how.
Risk Analysis and Mitigation in Virtualized EnvironmentsSiddharth Coontoor
As companies move towards hybrid cloud solution there are still many private cloud solutions still out there. Traditional risk assessment techniques cannot be applied to such virtual servers. This paper is an attempt to identify key assets and assess risks related to these critical assets.
Need for Virtualization – Pros and cons of Virtualization – Types of Virtualization –System VM, Process VM, Virtual Machine monitor – Virtual machine properties - Interpretation and binary translation, HLL VM - supervisors – Xen, KVM, VMware, Virtual Box, Hyper-V.
In recent years, we have seen an overwhelming number of TV commercials that promise that the Cloud can help with many problems, including some family issues. What stands behind the terms “Cloud” and “Cloud Computing,” and what we can actually expect from this phenomenon? A group of students of the Computer Systems Technology department and Dr. T. Malyuta, whom has been working with the Cloud technologies since its early days, will provide an overview of the business and technological aspects of the Cloud.
Server Virtualization Architecture and ImplementationLockheed Martin
Virtual machine technology, or virtualization, is gaining momentum in the information technology
community. While virtual machines are not a new concept, recent advances in hardware and
software technology have brought virtualization to the forefront of IT management. Stability, cost
savings, and manageability are among the reasons for the recent rise of virtualization. Virtual machine
solutions can be classified by hardware, software, and operating system/containers. From its inception on
the mainframe to distributed servers on x86, the virtual machine has matured and will play an increasing
role in systems management.
Why You Should Replace Windows 11 with Nitrux Linux 3.5.0 for enhanced perfor...SOFTTECHHUB
The choice of an operating system plays a pivotal role in shaping our computing experience. For decades, Microsoft's Windows has dominated the market, offering a familiar and widely adopted platform for personal and professional use. However, as technological advancements continue to push the boundaries of innovation, alternative operating systems have emerged, challenging the status quo and offering users a fresh perspective on computing.
One such alternative that has garnered significant attention and acclaim is Nitrux Linux 3.5.0, a sleek, powerful, and user-friendly Linux distribution that promises to redefine the way we interact with our devices. With its focus on performance, security, and customization, Nitrux Linux presents a compelling case for those seeking to break free from the constraints of proprietary software and embrace the freedom and flexibility of open-source computing.
Enhancing Performance with Globus and the Science DMZGlobus
ESnet has led the way in helping national facilities—and many other institutions in the research community—configure Science DMZs and troubleshoot network issues to maximize data transfer performance. In this talk we will present a summary of approaches and tips for getting the most out of your network infrastructure using Globus Connect Server.
Encryption in Microsoft 365 - ExpertsLive Netherlands 2024Albert Hoitingh
In this session I delve into the encryption technology used in Microsoft 365 and Microsoft Purview. Including the concepts of Customer Key and Double Key Encryption.
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf91mobiles
91mobiles recently conducted a Smart TV Buyer Insights Survey in which we asked over 3,000 respondents about the TV they own, aspects they look at on a new TV, and their TV buying preferences.
Climate Impact of Software Testing at Nordic Testing DaysKari Kakkonen
My slides at Nordic Testing Days 6.6.2024
Climate impact / sustainability of software testing discussed on the talk. ICT and testing must carry their part of global responsibility to help with the climat warming. We can minimize the carbon footprint but we can also have a carbon handprint, a positive impact on the climate. Quality characteristics can be added with sustainability, and then measured continuously. Test environments can be used less, and in smaller scale and on demand. Test techniques can be used in optimizing or minimizing number of tests. Test automation can be used to speed up testing.
Transcript: Selling digital books in 2024: Insights from industry leaders - T...BookNet Canada
The publishing industry has been selling digital audiobooks and ebooks for over a decade and has found its groove. What’s changed? What has stayed the same? Where do we go from here? Join a group of leading sales peers from across the industry for a conversation about the lessons learned since the popularization of digital books, best practices, digital book supply chain management, and more.
Link to video recording: https://bnctechforum.ca/sessions/selling-digital-books-in-2024-insights-from-industry-leaders/
Presented by BookNet Canada on May 28, 2024, with support from the Department of Canadian Heritage.
LF Energy Webinar: Electrical Grid Modelling and Simulation Through PowSyBl -...DanBrown980551
Do you want to learn how to model and simulate an electrical network from scratch in under an hour?
Then welcome to this PowSyBl workshop, hosted by Rte, the French Transmission System Operator (TSO)!
During the webinar, you will discover the PowSyBl ecosystem as well as handle and study an electrical network through an interactive Python notebook.
PowSyBl is an open source project hosted by LF Energy, which offers a comprehensive set of features for electrical grid modelling and simulation. Among other advanced features, PowSyBl provides:
- A fully editable and extendable library for grid component modelling;
- Visualization tools to display your network;
- Grid simulation tools, such as power flows, security analyses (with or without remedial actions) and sensitivity analyses;
The framework is mostly written in Java, with a Python binding so that Python developers can access PowSyBl functionalities as well.
What you will learn during the webinar:
- For beginners: discover PowSyBl's functionalities through a quick general presentation and the notebook, without needing any expert coding skills;
- For advanced developers: master the skills to efficiently apply PowSyBl functionalities to your real-world scenarios.
UiPath Test Automation using UiPath Test Suite series, part 4DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 4. In this session, we will cover Test Manager overview along with SAP heatmap.
The UiPath Test Manager overview with SAP heatmap webinar offers a concise yet comprehensive exploration of the role of a Test Manager within SAP environments, coupled with the utilization of heatmaps for effective testing strategies.
Participants will gain insights into the responsibilities, challenges, and best practices associated with test management in SAP projects. Additionally, the webinar delves into the significance of heatmaps as a visual aid for identifying testing priorities, areas of risk, and resource allocation within SAP landscapes. Through this session, attendees can expect to enhance their understanding of test management principles while learning practical approaches to optimize testing processes in SAP environments using heatmap visualization techniques
What will you get from this session?
1. Insights into SAP testing best practices
2. Heatmap utilization for testing
3. Optimization of testing processes
4. Demo
Topics covered:
Execution from the test manager
Orchestrator execution result
Defect reporting
SAP heatmap example with demo
Speaker:
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
The Metaverse and AI: how can decision-makers harness the Metaverse for their...Jen Stirrup
The Metaverse is popularized in science fiction, and now it is becoming closer to being a part of our daily lives through the use of social media and shopping companies. How can businesses survive in a world where Artificial Intelligence is becoming the present as well as the future of technology, and how does the Metaverse fit into business strategy when futurist ideas are developing into reality at accelerated rates? How do we do this when our data isn't up to scratch? How can we move towards success with our data so we are set up for the Metaverse when it arrives?
How can you help your company evolve, adapt, and succeed using Artificial Intelligence and the Metaverse to stay ahead of the competition? What are the potential issues, complications, and benefits that these technologies could bring to us and our organizations? In this session, Jen Stirrup will explain how to start thinking about these technologies as an organisation.
Elevating Tactical DDD Patterns Through Object CalisthenicsDorra BARTAGUIZ
After immersing yourself in the blue book and its red counterpart, attending DDD-focused conferences, and applying tactical patterns, you're left with a crucial question: How do I ensure my design is effective? Tactical patterns within Domain-Driven Design (DDD) serve as guiding principles for creating clear and manageable domain models. However, achieving success with these patterns requires additional guidance. Interestingly, we've observed that a set of constraints initially designed for training purposes remarkably aligns with effective pattern implementation, offering a more ‘mechanical’ approach. Let's explore together how Object Calisthenics can elevate the design of your tactical DDD patterns, offering concrete help for those venturing into DDD for the first time!
DevOps and Testing slides at DASA ConnectKari Kakkonen
My and Rik Marselis slides at 30.5.2024 DASA Connect conference. We discuss about what is testing, then what is agile testing and finally what is Testing in DevOps. Finally we had lovely workshop with the participants trying to find out different ways to think about quality and testing in different parts of the DevOps infinity loop.
Accelerate your Kubernetes clusters with Varnish CachingThijs Feryn
A presentation about the usage and availability of Varnish on Kubernetes. This talk explores the capabilities of Varnish caching and shows how to use the Varnish Helm chart to deploy it to Kubernetes.
This presentation was delivered at K8SUG Singapore. See https://feryn.eu/presentations/accelerate-your-kubernetes-clusters-with-varnish-caching-k8sug-singapore-28-2024 for more details.
2. The journey toward the cloud begins with
virtualization.
Virtualization has emerged as the key
disruptive technology that has catalyzed and
enabled data centres to deliver cloud
services.
Compute, networks, and storage form the
three infrastructure pillars of today’s data
centre.
by:Mr.Abhishek Khare
3. The idea of virtualization is not new; it has
been around since the days of the mainframe.
But more recently, the term virtualization
has gained a broader, more inclusive
connotation beyond server virtualization.
by:Mr.Abhishek Khare
4. Virtualization can be defined as the abstraction of
physical resources into logical units, such that a single
physical resource can appear as many logical units
and multiple physical resources can appear as a single
logical unit.
The primary motivation behind virtualization is to
hide the physical characteristics and irrelevant details
of these resources from their end users.
Thus, each user gets the illusion of being the lone user
of that physical resource (one-to-many virtualization).
Or multiple physical resources appear as a single
virtual resource to the user (many-to-one
virtualization).
by:Mr.Abhishek Khare
5. Consider the familiar example of virtualizing
an x86 server, where software, called virtual
machine monitor (VMM) or hypervisor ,
allows multiple virtual machines (VM) to run
on the same physical server, as illustrated in
Figure
by:Mr.Abhishek Khare
7. Each VM emulates a physical computer by
creating a separate operating system
environment.
The ability to run multiple VMs means that we
can now simultaneously host multiple operating
systems on the same underlying physical
machine. Each operating system gets the
illusion that it is the only one running on that
host server.
One physical machine has effectively been
divided into many logical ones.
by:Mr.Abhishek Khare
8. Virtual LANs (VLAN) are another example of
one-to-many virtualization, where a single
physical network is partitioned into many
logical ones.
Instead of setting up separate physical
networks for each user group, a single
physical network infrastructure can suffice,
with each user group assigned to a separate
logical network (VLAN).
by:Mr.Abhishek Khare
9. The classic example for many-to-one
virtualization is that of a load balancer, which
front ends a group of web servers. As shown
is Figure
by:Mr.Abhishek Khare
11. The load balancer hides the details about the
multiple physical web servers and simply
exposes a single virtual IP (VIP).
The web clients that connect to the VIP to
obtain the web service have the illusion that
there is a single web server.
Many physical web servers have been
abstracted into one logical web server.
by:Mr.Abhishek Khare
12. The concept of virtualization has been around
since the 1960s, when IBM implemented it to
logically partition mainframe computers into
separateVMs.
This partitioning enabled mainframes to run
multiple applications and processes at the
same time, which improved their utilization.
Such multitasking allowed better leveraging
of those expensive investments.
by:Mr.Abhishek Khare
13. Over the next two to three decades, the need for
virtualization declined as inexpensive PCs and servers
became available.
In addition, client/server applications became
prevalent, and the trend shifted toward distributed
computing. Furthermore, the universal adoption of
Windows and Linux led to the emergence of x86
servers as the dominant compute platforms.
Unlike mainframes, however, these servers have not
been designed for virtualization. To enable the
virtualization of x86 servers, specialized software
called hypervisor was developed by companies such
asVMware, Citrix, Microsoft, and others.
by:Mr.Abhishek Khare
14. The term virtualization has evolved beyond server
virtualization into a significantly broader context.
Today, it represents any type of process obfuscation
where a process is removed from its physical
operating environment.
Therefore, virtualization can be applied to other areas
of IT, such as storage, network, applications, services,
desktops, and many more.
This chapter focuses on server virtualization, network
virtualization, and storage virtualization, which
together form the foundation of today’s virtualized
data center.
by:Mr.Abhishek Khare
15. Server or compute virtualization is the most
popular and visible form of virtualization today.
We briefly touched on this form of virtualization
as an example of one-to-many virtualization and
saw how low-level software (hypervisor or VMM)
allows multiple operating systems to run
concurrently on a single host computer.
As Figure 1-1 illustrated, each operating system,
along with its applications, runs in complete
isolation as a VM on top of the hypervisor, under
the illusion that it is the sole operating system
running on that physical machine.
by:Mr.Abhishek Khare
16. To successfully virtualize the system and
enable multiple VMs to run concurrently on
the same host, hypervisors dynamically
partition and share the available physical
resources, such as CPU, memory, and I/O
devices. The functionality of the hypervisor
varies greatly based on the architecture and
implementation.
by:Mr.Abhishek Khare
18. CPU, memory, and I/O are typically
considered the three vital resources of a
server.
Correspondingly, the three key components
of server virtualization are CPU virtualization,
memory virtualization, and I/O virtualization .
The sections that follow take a look at all
three components, starting with the
virtualization of the x86 CPU.
by:Mr.Abhishek Khare
19. Beyond CPU virtualization, the other critical
part of server virtualization is memory
virtualization. This involves sharing the host
physical memory (machine memory) and
dynamically allocating it to VMs, as illustrated
in Figure 1-4 .
VM memory virtualization is similar to the
virtual memory support provided by modern
OS.
by:Mr.Abhishek Khare
20. Applications see a contiguous address space
that is not necessarily tied to the underlying
physical memory in the system.
The operating system keeps mappings of
virtual page numbers to physical page
numbers stored in page tables.
All modern x86 CPUs include a memory
management unit (MMU) and a translation
look-aside buffer (TLB) to optimize virtual
memory performance.
by:Mr.Abhishek Khare
22. Having coveredVMs (CPUs) and then virtual
memory, this discussion now turns to the final
component of the server virtualization story: I/O
virtualization (IOV).
As the name suggests, IOV involves virtualizing
the I/O path from the server to the peripheral
device, enabling multipleVMs to share an I/O
device.
As shown earlier in the case of CPU and memory
virtualization, even in IOV we have a software
approach and a hardware approach.
by:Mr.Abhishek Khare
23. A virtual storage area network (VSAN) is a
logical partition in a storage area network
(SAN). VSANs allow traffic to be isolated
within specific portions of a storage area
network.
by:Mr.Abhishek Khare
24. The use of multiple VSANs can make a system
easier to configure and scale out. Subscribers
can be added or relocated without the need for
changing the physical layout.
If a problem occurs in one VSAN, that problem
can be handled with a minimum of disruption to
the rest of the network.
Because the independence of VSANs minimizes
the total system's vulnerability, security is
improved. VSANs also offer the possibility of
data redundancy, minimizing the risk of
catastrophic data loss.
by:Mr.Abhishek Khare
25. The term is most often associated with Cisco
Systems and is often mentioned in
conjunction with the zoning. Zoning splits a
SAN into multiple, isolated subnetworks.
The concept behind a VSAN is often
compared to that of a virtual local area
network (VLAN).
VLANs segregate broadcasts from other
networks
by:Mr.Abhishek Khare
26. In computer networking, a single layer-2
network may be partitioned to create
multiple distinct broadcast domains, which
are mutually isolated so that packets can only
pass between them via one or more routers;
such a domain is referred to as a virtual local
area network, virtual LAN or VLAN.
by:Mr.Abhishek Khare