Since virtualization is at the forefront of technological progress, and because every mover and shaker in the industry (IBM, Microsoft, Dell, etc. plus industry analysts) have solid, he supported, you should have some basic concept of what goes here. It is the future of computing come to us directly.
So, here goes.
Let's start talking about something that I'm sure everyone knows – remote controls. If you're like me, you will have some type ofEntertainment center. Mine consists of a television, a cable box, a receiver, a DVD player, a Blu-ray player, DVD recorder and CD player. This accounts for up to seven devices. Each unit come with its own remote control. This means that I have seven remotes on my table, usually in a state of disorder to have.
Each remote control is set to the same frequency, as it controls the machine. Each unit and the corresponding machine talkthe same language. And why is my TV remote has no effect on my Blu-ray player or CD player or cable box.
Each remote control and corresponding machine is a piece of hardware. What makes it work programmed instructions – Software.
Sun someone came by and found out how to simplify all this. A universal remote control has been created to duplicate, or can replicate the frequency and the language used in each of your remote control devices, so that one remote controlis all that needs to make all your machines. In other words, that it is universal device within a virtual TV remote control, a virtual remote control cable box, a virtual remote control receiver, a virtual DVD remote control, a virtual Blu-ray remote control, a virtual DVD recorder remote control and a virtual CD player remote control.
What are the advantages of this? Well, the first and most obvious advantage that INow, all remote controls, the occupying Power, coffee table and they have homes somewhere in a drawer. I just need the universal remote control. Another advantage is that I now do not necessarily keep a case of batteries in the cabinet to power all these devices. This saves me money as I only in the power of universal device. Finally, the amount of money is saved what I spent to pay the universal device.
In general, virtual means affect the quality, without somethingthat indeed something. It has come to mean in modern times ", where in essence or effect but not in deed." In the above example, seemed each of the remote control devices in the universal controller without being physically there. Thus, they were virtualized. It was they, in essence, but not in reality, and each virtual device can create the same effect as the real device.
Okay. This is a foundation concept, what it means to virtualize something. Let us now movebeyond the field of computers and networks.
Virtualization and Computers
As a home user, you have a single workstation, which, apart from your desk, chair and the surrounding work, consisting of hardware (a tower with a motherboard, CPU, one or more hard drives, RAM, power supply, cooling system, etc., a monitor, a mouse, CD / DVD player, and usually a dedicated printer) plus software (the programming code or instructions that have been installed on the hardDrive). All this is from one operating system or OS (Windows XP, Vista, Windows 7, Linux, etc.) work. The OS runs the computer and provides you with an interface with which commands on the computer system for output. Computer technology, as we have known it needed an operating system per computer. And, depending on the equipment that came with this workstation, it uses a certain amount of power.
One thing is certain, no matter what you use for your home computer, you are only in a knockvery small fraction of what your CPU is capable of (assuming of course that your CPU is not some old dinosaur). The computing power doubled every 18 months. Just think how many times it doubled in the last 20 years: Start with 100 million instructions per second (MIPS) and you'll see that would rise in the second 18-month period to 200 in the third 18-month period, 400 in the fourth 18-month period, 800, etc. This is very stratospherequickly.
How many MIPS are you now? Fact: your hardware is not saturated.
Now let your home work and see the scene in a shop of 20 workstations, all connected servers and shared printers. How your home workstation, each workstation in the business of his own computer tower, monitor and mouse. Each of these agreements consumes a certain amount of electricity and has a very definite influence on the energy bill is that eachMonth.
Add these 20 jobs, three servers: (1) a mail server, (2) an application server, and (3) a file server. Each server runs on an OS and provides services to the workstations. And again, a security appliance, a network switch, a router and a NAS (Network Attached Storage-add) for back-ups for the ever increasing volume of data from the server and workstations.
To add 50 jobs, perhaps another 2-3 servers. 100 jobs to you may have to add another 3You have the 2-3 in 50th Further, as the company grows, the IT infrastructure (such as the Company) expands, it will at some point need to set an IT person and then another and another, etc. So you can see the increasing IT overhead in terms on (a) the purchase of several hardware and software, (b) adding IT staff, and (c) higher energy consumption. And the hardware is growing utilization.
In a small company where the IT infrastructure is static (unchanging), virtualization would notare needed. But one company is not a static entity. There is growing or shrinking, and efforts to make it static usually bring about a degree of contraction. So even if you do not currently need to use this tool, it is important to have a basic understanding of IT for the day when you could need to deal with them.
Here's how virtualization works:
Remember virtualizes the example of the seven remote controls into one universal controller? Well, that's virtualization technology includesThe specially written software code, the device does the same for servers, desktop computers, applications, storage devices and others. I do not want the technical details of how this is done, because this article is about the basic concept of virtualization. Suffice it to say, seven physical servers could be consolidated (virtualized) in one physical server (host a server instead of 7). can be migrated in the same way their normal applicationsResidence – a desktop – to a virtualized environment on the virtual server. This means that ultimately Desktop Thin Client can be replaced with the what is. " A thin client (sometimes called a lean or slim client) is a device that can be attached to the back of the monitor and open communication with the virtual server regardless of application is selected by the user. The thin client fulfills the traditional role of the desktop. Thin clients areusually much less expensive than a desktop computer., devices such as network-attached storage to security appliances, and a huge variety of other devices are virtualized servers on one. I hope that you begin to get the idea.
The physical mail servers, application servers and file servers were consolidated (virtualized) in a physical engine – virtual server. The computing power of the virtual server is used more efficiently. TheWorkstations were retired and replaced with thin clients and there is much less iron in this society. There are also less energy consumption. And now it can be a better use of IT staff can now focus more time and attention on the core processes of the company.
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