Storage area network as a networked highspeed enterprise. Lans and wans can be interconnected via t1 or t3 digital leased linesaccording to the protocols involved, networks interconnection is achieved using one or several of the following devices. Ethernet ethernet is a widely deployed lan technology. The 24bit address scheme also removes the overhead of manual administration.
San devices appear to servers as attached drives, eliminating traditional network bottlenecks. Downloading generally transfers entire files for local storage. An san makes a network of storage devices accessible to multiple servers. The network interconnects storage devices, switches, and hosts. It connects the computer to the cabling, which in turn links all of the computers on the network together. It focuses on the techniques and the technologies that have evolved around slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising.
A vpn virtual private network allows for information to be securely sent across a public or unsecure network, such as the internet. Introduction to the controller area network can rev. The devices may or may not belong to the person in question. Servers connect to the san fabric using host bus adapters hbas. In a sitetosite vpn, devices in the service provider network also fall into one of two categories. Networks of low capacity may be connected together via a backbone network which is a network of high capacity such as a fddi network, a wan network etc. In computer networks, download means to receive data from a remote system, typically a server such as a web server, an ftp server, an email server, or other similar systems. San storage area network provides systems with highspeed, lossless access to highcapacity storage devices. Internetwork a network of networks is called an internetwork, or simply the internet. The first type of network that we will consider is called a peer topeer. Devices on the same logical network must have addresses with the same network part.
Introductiona network can be defined as a group of computers and other devices connected in some ways so as to be able to exchange data. To get a grasp of storage area network basics, download this free essential guide to san implementation for the latest tips and best practices, and find out more about future trends. Common uses of a vpn are to connect branch offices or remote users to a main office. A storage area network san is a specialized, highspeed network that. Gaining access andor control of the network is controlled regardless of the transport method used. Renew to download the latest product features, get 247 tech support, and access to instructorled training. A san, or storage area network, is a dedicated network that is separate from lans. To understand the difference between a san and network attached storage nas, the difference between the file system and storage must be made clear. Computer network, two or more computers that are connected with one another for the purpose of communicating data electronically. At a thin 202 pages, that book was the first to provide a brief overview of storage area network san technology and was widely adopted as an introductory and training text for both vendors and. With current estimates of the amount of data to be managed and made available increasing at 60% each year, this outlook is where a storage area network san enters the arena. This edition applies to the products in the ibm storage area networks san portfolio.
It focuses on the techniques and the technologies that have evolved around. Two basic network types are localarea networks lans and widearea networks wans. Sans are primarily used to enhance accessibility of storage devices, such as disk arrays and tape libraries, to servers so that the devices appear to the operating system as locallyattached devices. Download this computer networking pdf excerpt from computer networks, a book that addresses the key principles of computer networks. A storage area network, or san, is a network dedicated to data storage. Storage area network as a networked highspeed enterprise infrastructure nt windows nt. Ethernet, the most common transport method in a front end network, uses an access method known as carrier sense multiple access and collision detection csmacd. Personal area network pan a personal area network pan is a computer network used for communication among computer devices, including telephones and personal digital assistants, in proximity to an individuals body. The key to distinguishing the two lies in the last term of each acronym. In this kind of network there is no such thing as server and network hosts dont have a specific role. Learning about storagearea networks sans means becoming familiar with new phrases and their acronyms. Highend enterprise sans may also include san directors for higher performance and efficient capacity usage. Ibm provides this through flexible, scalable, and open standardsbased intelligent san switches, directors, and routers throughout your global enterprise.
San abbreviation stands for server area networking. Storage area network san architecture refers to the logical layout of a san infrastructure. Bestselling authors and expert instructors keith barker and kevin wallace share preparation hints and testtaking tips, helping you identify areas of weakness and improve. To view the snia vendorneutral terms and definitions visit our online snia.
Introduction to social network methods analytic tech. A clientserver network is one n which all available network resources such as files, directories, applications and shared devices, are centrally managed and hosted and then are accessed by client. Storage area network san san is a dedicated highperformance network for consolidated blocklevel storage. A download is a file offered for downloading or that has been downloaded, or the process of receiving. The network achieves this by providing a set of rules for communication, called protocols, which should be observed by all participating hosts. Download the tools, build a lab, get trained, test and break things. A large organization may have different types of centralized storage, not all of which should be accessible to all users of. They provide network services and they also consume network services.
Sometimes people confuse the term san with the term nas, which stands for network attached storage. A rapidly growing portion of san deployments leverages allflash storage to gain its high performance, consistent low latency, and lower total cost when compared to spinning disk. Technically a usb external hard drive is a cheesy form of a san. Most modern network cards are 10100 nics and can operate at. Analyze network traffic patterns over months, days, or minutes by drilling down into any network element. What is storage area network architecture san architecture. In a peer topeer network we can have hosts that will fulfill a variety of different roles.
On the one hand, open source software and creativecommons licensing. The purpose of a storage area network is to allow all designated users on the network to access multiple storage devices, not only the storage devices installed in their computer. Introduction to software defined networking introduction. Each computer on the network can access hard drives in the san as if they were local disks connected directly to the computer.
You can search for, view, or download redbooks, redpapers, hints and tips. Download free adobe acrobat reader dc software for your windows, mac os and android devices to view, print, and comment on pdf documents. What is the abbreviation for server area networking. Download data is sent downstream to an enduser, upstream from the provider. Network attached storage nas storage area network san definition of nas networkattached storage nas is a concept of shared storage on a network. To define the main components of a network operating system. The smarter data center is achieved by connecting servers and storage with a highspeed and intelligent network fabric. A virtual private network vpn allows the provisioning of private network services for an organization or organizations over a public or shared infrastructure such as the internet or.
A download is a file offered for downloading or that has been downloaded, or the process of receiving such a file. A storagearea network san is a dedicated highspeed network or subnetwork that interconnects and presents shared pools of storage devices to multiple servers. A storage area network san is a computing solution for accessing and storing data. This contrasts with uploading, where data is sent to a remote server. Download as ppt, pdf, txt or read online from scribd.
A san storage area network is a subnetwork of storage devices that are shared with one another over a highspeed network connection. Unreliable means ipx packets are sent to a destination without requiring the destination to acknowledge receiving those packets. The 24bit address scheme removes the overhead of manual administration of. Client serve network are defined by the presence of servers on a network that provide security and administration of the network. Using esx server together with a san provides extra storage for.
Vmware esx server can be used in conjunction with a san storage area. Csma means that each node on a bus must wait for a prescribed period of inactivity before attempting to send a. Each computer on a network must have a network card. Introduction to storage area networks ibm redbooks. A nic pronounced nick is also known as a network card. Pdf this chapter identifies characteristics, architectural concepts, technologies, applications, and marketplace of storage area networks sans. According to this definition, an ethernetbased network.
Most modern network cards are 10100 nics and can operate at either 10mbps or 100mbps. Introduction to social network methods table of contents this page is the starting point for an online textbook supporting sociology 157, an undergraduate introductory course on social network analysis. A node is usually itself a computer general or special which runs specific network software. Even though this definition is simple, understanding how to make a network work might be.
Introduction to san nas local area network computer. It is good to know about network topologies because different types of networking standards may use one type of. Adobe acrobat reader dc download free pdf viewer for. Sans are the leading storage infrastructure for the global economy of today. Management includes provisioning, operating, monitoring. In chapter 1, foundation, learn how local and wide area networks wans are now built to connect more than computers. To the user, storage area networks appear to be local to the operating system, but they are actually remote. This allows individual hard drives to be used by multiple computers, making it easy to share. How the san is logically created components used data storage and retrieval frameworks devicehost interconnectivity other parameterscomponents essential for a san. Dont worry san terms and abbreviations will become easy to remember with time and practice. Data communication and computer network 8 let us go through various lan technologies in brief. Storage area networks sans are the most common storage networking architecture used by enterprises for businesscritical applications that need to deliver high throughput and low latency.
Storage area network simple english wikipedia, the free. To define some of the basic terminology of operating systems. Hanneman of the department of sociology teaches the course at the university of california, riverside. By definition a san does not need an os but typically it has one.
This technology was invented by bob metcalfe and d. But at the lowest level watch the open storage video above you can have a san with nothing more than a single hard drive attached to a network adapter. No processor covers to 160mbps, or no wiring, parallel depending. Data communication and computer network 6 wan may use advanced technologies such as asynchronous transfer mode atm, frame relay, and synchronous optical network sonet. Network classification based on network topologies network topology is the layout of the various interconnected elements on a computer network. Introduction a computer network is the infrastructure that allows two or more computers called hosts to communicate with each other. Service provider p devicesp devices are devices such as routers and switches within the provider network that do not directly connect to customer networks. San conceptual and design basics vmware esx server can be used in conjunction with a san storage area network, a specialized high. Sometimes people confuse the term san with the term nas, which stands for networkattached storage. In order to participate on a network such as the ip network. A storage area network san is a secure highspeed data transfer network that provides access to consolidated blocklevel storage. A san is a network of storage devices that can be accessed by multiple computers. To help you along, use this list to keep track of the language describing storage area networks. A storage area network san or storage network is a computer network which provides access to consolidated, blocklevel data storage.
460 1530 1235 1537 1429 55 1306 559 344 151 1335 830 853 464 827 1176 1025 295 95 552 314 43 905 656 437 860 542 200