The storage area network san infrastructure facilitates storage consolidation, data sharing, server clustering, lanfree and serverless backup across heterogeneous host server platforms. Detail explanation of san storage architecture what is san and how san storage works duration. An introduction to storagearea networks and network. Newest storage network innovations learn how you can modernize your storage network and improve scale and performance. Introduction to lans, wans, and other kinds of area networks whats the difference between lan and wan and other networks. Why information services professionals should be interested in storage networking. Understanding how to build a costeffective, highperformance storage system can. Fibre channel is structured in independent layers, as are other networking protocols. What properties a storage area network must have, should have, and may have. Nas vs san network attached storage vs storage area. In the context of this document, a port is the connection from a device into the san. Basics and application of fibre channel san, nas, iscsi, infiniband and fcoe troppens, ulf, erkens, rainer, mullerfriedt, wolfgang, wolafka, rainer, haustein, nils on. A nas is a single storage device that operates on data files, while a san is a local network of several devices.
Here is an example of a nas affiliate what is a nas. Introduction to storage area networks july 2006 international technical support organization sg24547003. Both authors work at the interface between technology and customers. It is alternative to the directly attached targets. Pdf storage area networks fundamentals researchgate.
This includes hard disk drives, raid arrays, tape disk drives, etc. Introduction to storage area networks ibm redbooks. 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. It facilitates a common understanding of management data across. Your data flow is only as fast as your network connectivity allows. Because of this unfamiliarity, we explain the basic concepts of the networking world. However, nas is a much simpler and less expensive technology.
The market perception of storage area networks 9 1. A storage area network san or storage network is a computer network which provides access to consolidated, blocklevel data storage. Basics and application of fibre channel san, nas, iscsi, infiniband and fcoe, second edition. Basics and application of fibre channel san, nas, iscsi, infiniband and fcoe. Ulf troppens and rainer erkens are employed at ibm totalstorage interoperability center in mainz, a testing, development and demonstration laboratory for storage products and storage networks. Storage area network as a networked highspeed enterprise infrastructure. Electronic commerce has made traditional data storage methods obsolete. A communication infrastructure and this communication infrastructure furnish physical. A storage area network san is a specialized, highspeed network that.
Storage area network is explained by the storage industry network association snia and they defined it as a network whose main purpose is the exchange of information between computer systems and elements. A san moves storage resources off the common user network and reorganizes them into an independent, highperformance network. Sans are already revolutionizing distributed computing. A storage area network san is a specialized, highspeed network that provides blocklevel network access to storage. Get endtoend visibility and datadriven recommendations to achieve better storage performance, faster troubleshooting, and optimized infrastructure. Understanding storage area networks sans determining whether a san is right for you looking at san layers and protocols discovering which operating systems benefit from sans discovering which application can use or require sans this chapter is dedicated to helping you get a handle on what a storage area network san is, the. Today, most sans use fibre channel media, providing an anytoany connection for processors and storage on that network. San allows our computer typically a server to connect to various types of remote storage devices, typically called targets. Ibm fibre channel storage area network product portfolio chapter. An san makes a network of storage devices accessible to multiple servers.
Storage area network san architecture refers to the logical layout of a san infrastructure. Storage area networking fundamentals global knowledge. This course focuses on the planning and implementation considerations associated with establishing that san infrastructure. For historical reasons, the networking industry refers to nearly every type of design as some kind of area network. A san typically has its own network of storage devices that are generally not accessible through the local area network by other devices. This edition applies to the products in the ibm storage area networks san portfolio.
San vs nas difference between a storage area network and network attached storage submitted by sarath pillai on sat, 04192014 20. Pdf this chapter describes fundamentals of storage area networks sans, their. This chapter identifies characteristics, architectural concepts, technologies, applications, and marketplace of storage area networks sans. In this environment simply deploying more and faster storage devices is not enough. The storage infrastructure is the foundation on which information relies, and therefore must support a companys business objectives and business model. Sans are typically composed of hosts, switches, storage elements, and storage devices that are interconnected using a variety of technologies, topologies, and protocols. What is storage area network san in simple words san is a highspeed, dedicated network of servers and shared storage devices and provides access to consolidated, block level data storage. There are five layers, where 0 is the lowest layer. Vmware esx server can be used in conjunction with a san storage area network, a. Understanding storage area networks p having a separate ethernet for the private metadata network, though not absolutely required, is highly recommended, and the separation of network traffic between the san and a public network. Each node in the sans each host, storage device, and fabric component. Storage area network as a networked highspeed enterprise infrastructure nt. A storage area network san is a secure highspeed data transfer network that provides access to consolidated blocklevel storage. Sg24547000 international technical support organization.
A storage area network san provides a pool of storage resources that can be centrally managed and. A san storage area network is a subnetwork of storage devices that are shared with one another over a highspeed network connection. Networkattached storage nas is a type of dedicated file storage device that provides localarea network local area network lan nodes with filebased shared storage through a standard ethernet connection. Nas is specialized for serving files either by its hardware, software, or configuration. Ethernet media using an io protocol called iscsi is emerging in 2001. 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. A nas device is a selfcontained file server thats preconfigured and ready to run. Introduction to storage area networks semantic scholar. We also describe the basics, architecture and mechanism of san. Storage area networks and green data centers chapter 12. Networkattached storage nas is a filelevel as opposed to blocklevel computer data storage server connected to a computer network providing data access to a heterogeneous group of clients.
Storage area networks san and networkattached storage nas provide networked storage solutions. A simple and relatively inexpensive way to add more storage to your network is to use network attached storage, also known as nas. A nas device is nothing more than an inexpensive selfcontained file server. San vs nas difference between a storage area network and. An introduction to storagearea networks and networkattached storage learn more about fibre channel sans, san switches, nas clusters, nas virtualization and. How the san is logically created components used data storage and retrieval frameworks devicehost interconnectivity other parameterscomponents essential for a san. In this ppt we describe the introduction of storage area network. Pdf this chapter identifies characteristics, architectural concepts, technologies. Storage area network san technology has been around since the late 1990s, but historically it was priced far out of the range of small it departments. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Information processing capabilities enabled by storage area networks. The need for fulltime data access, as well as the sharing of storage and data by multiple applications, has given rise to a completely new data storage paradigm the storage area network san. Storage area networks, such as ibm system engineers, ibm business partners. Seminar pdf report on storage area network san with ppt.
A storagearea network san is a dedicated highspeed network or subnetwork that interconnects and presents shared pools of storage devices to multiple servers. What is sanstorage area network is a design to transfer data, from serverto clients. What is the difference between a nas network attached storage and a san storage area network. Storage networks explained storage networks explained. Its easy to confuse the terms storage area network san and network attached storage nas.
Summary 1what is san 2basics of san 3architecture of san4basic mechanism of san 3. All you need to know about storage area networks the amount of data of an average company doubles every year. Although we connect to those device trough a network connection, we are not talking about network attached storage nas here. Ibm san solutions support virtualization, hybrid multicloud and big data requirements. The importance of software to storage area networks. San devices appear to servers as attached drives, eliminating traditional network bottlenecks. Introduction to storage area network, san ravi kumar khattar, mark s. Within reach of most it budgets, storage area networks pay. Both refer to relatively new network technologies that let you manage the disk storage on your network. 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. Storage area network as a service for cloud computing chapter 7.
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