The textbox explains virtualization in a long technical description but virtualization is basically running another existences inside something. Virtualization is a very “complex and fun” topic in technology because it’s not a physical item but can be manipulated by physical things. The internet could be consider to be virtualization because it is not a physical thing but an abstract intangible object. When people ask me what virtualization is, the first thing that comes to my mind is the movie The Matrix and the movie Inception. Both film have an plot that exist inside a “virtualization”, The Matrix is a simulation running on computers just like how we can combine computers to act as one and run programs like “The Matrix”. The movie Inception is a perfect example of virtualization because you can run an OS inside an OS inside another OS just like in the movie where they go deep into dreams. Virtualization is basically having multiple intangible items house in one physical item. A data center can be anywhere, it’s a fancy name we have giving to a room that house servers …show more content…
and other live network equipment. Virtualization allows data center to become small closets because for example; one server can host 10 completely different types of servers with different OS while only existing on one physical machine. Virtualization has also allow data centers to cut management costs because there is less machines taking power/cooling and less machines to maintain licenses, warranties, and connections. The timeline of virtualization technologies in my own words is this; it started out as giving computers the ability to share resources with each other, then creating nonphysical memory for systems to use then the creation of cutting networks into smaller manageable networks with VLANs which brought forth redundant disks. Following the redundant disks routing and forwarding though virtual means the technology was able to create virtualize computer with the x86 system from VMware. After the creation of the x86 platform, the next 16 years virtualization technology exploded with different types of creation from virtualize rules for switches/firewalls to even running a complete network without the need to have an on-site data center because of the “Cloud”. Virtualization began with the idea of sharing resources and has led to the creation of “Cloud” base networks where a corporation does not need to have physical data center but just a connection to the Internet because firewalls, filters, servers and other network equipment can be a virtualize system anywhere in the world and even in space. To start, virtual memory is a technique of managing a system’s memory in a way that allows space on the hard drive to be used as memory when the system has reach its maximum of RAM. Virtual switches and routers is an interesting thing because it allows a single device to act as multiple device and helps cost the cost for network administrators. One switch is just one switch but when you apply a virtual switch onto it, that one switch can act as two and provide security to those devices connected to the device. Virtual servers and desktops are basically the same thing because it’s taking a physical machine and allowing multiple OS to use the hardware, the only different is the OS. VLANs can be tricky because it allow a single network’s infrastructure to become multiple networks just by using the software that exist on the network’s hardware. VLANs can provide security and management to a network because allows network to become smaller and divided, when needed. These three planes allow network traffic to flow. The management plane is responsible for managing devices that sit on the network while the control plane is what controls the data and direct the flow of the network. Lastly the Data plane is what handles the data from devices. In other words the control plane is the traffic conductor that stands in the road and tells the traffic when and where to go based on routing settings while the data plane is a just looking at the traffic and overseeing the traffic as it goes in and out of an interface. The Management plane is the guy who doesn’t care about the traffic but instead manages and inspect the “roads” that the traffic will used. There can be many benefits of virtualizing a network like cutting the cost that it take to run a network. Networks can be expensive to maintain from cooling/electrical to keeping the network up-to-date and secured. Virtualization of a network cuts down the cooling/electrical because you would only have to provide those services to a few devices. Network equipment can fail and become outdate but through virtualization systems can be upgraded without needing to upgrade the equipment and if the main host of the virtualize system does fail you just move the saved file to a new device and bring the network backup. Network virtualization has allows companies of any size to have a data center and even rent one out because they can exist in a small closet or exist in the “Cloud”. The textbox states that there are three layers to the data center network layer model. Those three layer are core, aggregation and access layers. The Access layer is the layer that focuses on the physical Ethernet side of the network and is the layer that cares about what connection is connected to itself like similar IP subnets. The aggregation layer is the middle of the network, the textbox call it the “meeting point” which is a great thing to call it because of the fact that this is the place where traffic is sent to and is also the default gateway for the network’s devices. The aggregation layer is where firewalls should be place because all of the traffic is being sent here already and would allow the firewall to filter the traffic as it comes into the middle. I would say that a router would belong to this layer because routers tend to perform this type of network functions. Lastly the core layer, this is the layer that provides the power to forward incoming and outgoing traffic from the network. The core layer is also the point in the network in which traffic gets routed, routers can be belong to this layer because of the feature it can perform. The core layer is usually where a layer 3 switch can be found. Load balancing can provide great benefits to a network because it allows multiple equipment to share the load of processing the network traffic. One device handling all of the traffic can burn it out faster but also slow down the network because the traffic has to be process by one device but if load balancing is in place then traffic can flow faster because it now has two paths while also releasing “pressure” on the other device. Virtualization for failover can be a great thing for network because if something happens to one device, the system can automatically failover to another device without causing network interruptions. A big technology in use in failover with virtualization would be RAID, in which (depending on the RAID type) if one hard drive fails, the data is not loss because the system can rebuild the data from other bits or can be retrieve from the mirror disk. Again VLANs uses single network’s infrastructure to create multiple networks through the hardware’s software but there are also different forms of VLANs. Native VLAN is what I call the catch all VLAN because any traffic that has no VLAN number will fall into this VLAN and also provides a security issue because it opens the door to attacks like flooding. VRF is a technique that allows multiple routing tables to coexist and not fight with each on the same routing equipment which helps deal with VPN traffic on the network. The best way to define data segmentation is the process of breaking down the network into smaller networks that can be manage better but also allow for better security to take place because you can break the network down into section base on user’s needs. Data segmentation is a great way to allow outside system access to some of your network resources while keeping the controls in your hands. Link aggregation is the process of combining network connections while also providing a redundancy in the connection just in case one of the connection fails, personally the biggest value in adding this technology into a network would be the redundancy of the connection. Virtual PortChannels is the ability of the switch to maintain its own control planes and management while proving multiswitch link aggregation. Basically, multipathing is a combination of layer 2 and layer 3 network to have the ability route traffic like in Layer 3 but at the same time have the ability to perform simple switching. VPC+ is the same as vPC but with the added feature of allowing links to FabricPath edge switches in which provides forwarding of frames based on a SwitchID and not on destination MAC address. The added value of adding portchanneling, multipathing, and VPC+ is mainly to increase network traffic flow and to improve the network’s overall routing method. My definition of fabric extenders is this; just another way of managing multiple “dumb” switches from a “Parent” switch. Cisco’s fabric extenders does not have a forwarding table nor control plane because everything is done from the “Parent” switch. To me, fabric extenders reminds me of a hub but a bit smarter, because it fully rely on the “Parent” for everything. Two benefits that I can see in using fabric extenders would be that it does help organize the network cabinets while keeping cabling costs low and centralizing switching commands. Data center storage is simply the method of storing that the network uses.
Data centers have seen many different types of storage thought years from huge drums to tapes to today’s flash storage. Many of today’s data centers uses some form of RAID on a SAN to house the network’s storage. Virtualization has also help change how data center use and manage storage because before a data center would have many different hard drives for each system but with the RAID as being a part of virtualization, data centers can have multiple hard drive but act as one hard drives. In addition to RAID, virtualize storage has also open the door to off-site “Cloud” based storage for data centers to utilize. Today, data centers can have on-site virtualize servers but have the servers’ hard drives be located on a “cloud” base storage platform as the main storage location or even a backup location for the servers’
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centres, as well as all that is proposed to go hand in hand with them,
In “Bad Dreams, Evil Demons, and the Experience Machine: Philosophy and the Matrix”, Christopher Grau explains Rene Descartes argument in Meditation. What one may interpret as reality may not be more than a figment of one’s imagination. One argument that Grau points out in Descartes essay is how one knows that what one think is an everyday experience awake is not all a part of a hallucination. He uses the example of dreams to draw a conclusion about is claim based on experiences one would experience with dreaming. He asserts that there are times when one wake up from a dream that seems to be “vivid and realistic” however soon finds that it was not. The experience of reality in the dream was all a part of the mind. If dreams seem to be reality and one would not have any concept that one is dreaming how does one know that one is not dreaming now? Descartes point is that one cannot justify reality in the sense that one could be dreaming right at this moment and not know therefore one cannot trust the brain as an indicator of what is reality.
According to Linda Seger all myths, in all cultures are much the same. In these myths it is just the time, place and setting that changes. This is why Hollywood is so successful at making good movies, because they base it off these myths. The most popular myth is that of the hero, because for most of us this is what we want to be. With this myth we can live that experience through these characters. In the creation of a hero there are ten stages, using the Matrix as an example we will look at these ten stages.
By the virtuality of a thing I mean the seeming of it, as distinct from its more concrete "reality," which may not be important. ... I use the term "virtual" in its traditional sense, an opposite of "real". The reality of a movie includes how the scenery was painted and where the actors were repositioned between shots, but who cares? The virtuality of a movie is what seems to be in it.
Wartenberg addressed the question: “Can philosophy be screened?” (pg. 272) He then used thought experiment as a way that a film can represent philosophy. So what is “thought experiment”? Thought examinations include nonexistent situations in which the audience are asked to envision what things might be similar to if such-and-such were the situation. The individuals who feel that movies can really do philosophy show that fiction films can work as philosophical thought experiments and consequently qualify as philosophical. Wartenberg argues that it some fiction films as working in ways that thought experiments do, and thus they may be seen as doing philosophy. (pg. 276)
The human imagination is a very powerful thing. It sets humanity apart from the rest of the creatures that roam the planet by giving them the ability to make creative choices. The imaginary world is unavoidably intertwined with the real world and there are many ways by which to illustrate this through literature, either realistically or exaggerated. Almost everything people surround themselves with is based on the unreal. Everything from the food we eat to the books we read had to have been thought of by someone and their imagination. The imagination empowers humans.^1 It allows people to speculate or to see into the future. It allows artists to create, inventors to invent, and even scientists and mathematicians to solve problems. J.R. Tolken
Neo’s hero's journey started with his call to adventure. The call to adventure is when the hero is presented with his or her quest. The hero will often refuse this call because they don’t think they could actually be a hero. Neo worked at a software company and was at his desk working when the agents came looking for him in order to get to Morpheus. Morpheus called him and tried to lead him out of the building to escape, but to do that Neo would have had to jump out of a window.
Have you ever had a dream that you thought was so real? Well, what if you never woke up? How would you determine the difference between the real world and the dream world (Matrix,1999)? Some people in this world live their lives knowing that something is wrong. They can feel it in everything they do. They can feel it when they stare out a window or go to work or even when they pay their taxes (Matrix,1999). This feeling which these individuals are experiencing comes from the matrix.
The term Virtual Reality is a very unique way of bringing life to a world which doesn't even exist. There are many ways by which people have been trying to bring in the consent of the audience and to grab their interest. The history of virtual reality is marvelous in terms of what it was and what it is now. When before 1960s virtual reality existed, it was popular with the term "Pygmalion's Spectacles". Then there was "View-Master" a device in which there was a circular disc having small pictures in it and to view these pictures a person has to use a viewer where he places the disc inside of the designated place and then view in the direction of light. Then from the year 2000 onwards there were many platforms
Virtual reality is a 3D computer universe that one can access using digital technology. It comes with visual machinery attached to a computer to create the virtual experience. When you are connected to a virtual reality setup, the feeling is ecstatic as it looks so real.
Virtual reality can be defined as a, "technology that enables users to enter computer generated worlds and interface with them three dimensionally through sight, sound, and touch" (Newquist 93). Virtual reality combines computer simulation and visualization into a single, coherent whole (Peterson 8). Researchers say it embodies an attempt to eliminate the traditional distinction between the user and the machine. Virtual reality is intended to provide a means of naturally and intelligently interacting with information (8). Virtual reality is contending to be the interface of the future, allowing ordinary users to use their senses to interact with complex data.
Several types of cloud storage systems have been developed to supporting both personal and business uses. Cloud storage also a model of networked enterprise storage where the data is stored not only in the user's computer, but also in virtualized of storage, which generally hosted by third parties company.
When they wanted to save photos online instead of on your personal computer, they are able to use “cloud computing” service. Cloud computing means that the transfer of computing data or information over the internet. Not just to keep data in your personal computer, they are able to save the data on internet server to open their data in any computer. In this report we will walk through about what is cloud computing, what kinds of model did cloud computing have, types of cloud computing, benefits of cloud computing, and security.
Virtual memory is an old concept. Before computers utilized cache, they used virtual memory. Initially, virtual memory was introduced not only to extend primary memory, but also to make such an extension as easy as possible for programmers to use. Memory management is a complex interrelationship between processor hardware and operating system software. For virtual memory to work, a system needs to employ some sort of paging or segmentation scheme, or a combination of the two. Nearly all implementations of virtual memory divide a virtual address space into pages, which are blocks of contiguous virtual memory addresses. On the other hand, some systems use segmentation instead of paging. Segmentation divides virtual address spaces into variable-length segments. Segmentation and paging can be used together by dividing each segment into pages.
So what is virtual reality? It is sometimes referred to as immersive multimedia, it is a computer-simulated environment that can simulate some physical presence in places in the real world or imagined worlds. Most current virtual reality are primarily visual experience displayed either on a computer screen or through a head-mounted display. Some simulations include additional sensory information such as sound, tactile information or force feedback in medical, gaming and military applications. Furthermore, virtual reality covers remote communication environments which provide virtual presence of users with the concepts (Wikipedia, 2014).