Designed as an introduction to sans, storage area network fundamentals develops an understanding of san basics and shows how to plan, implement, and manage a san. Introduction to storage area networks april 2005 international technical support organization sg24547002. They can be uniquely identified in the storage area network using this number. San architecture, storage network, server area networks, storage sans, storage area networks definition. This redbook is written for people marketing, planning for, or implementing storage area networks, such as ibm system engineers, ibm business partners, system administrators, system programmers, storage administrators, and other technical support and operations managers and staff. Introduction to san a san storage area network is a complete storage network. The rapid growth of ecommerce and the need to have all kinds of applications operating at top speed at the same time, all on a 247 basis while connected to the internet, is overwhelming traditional data storage methods. 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. Introduction to storage area network, san ravi kumar khattar, mark s.
When considering the different storage options, you need to keep. Network storage elements hard drives a san s architecture works in a way that makes all storage. Nas dedicated fibre channel network for storage more efficient protocol higher availability reduce traffic conflict longer distance up to 10 km fibre channel provides high. 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. Your data flow is only as fast as your network connectivity allows. These devices include database server, file server, hard disk, magnetic tape etc. Storage area network as a service for cloud computing chapter 7. The types of backup can vary on the size of the business, budget and the data importance. All the servers that provide access to the storage area network collectively constitute the host layer. A san typically has its own network of storage devices that are generally not accessible through the local area network by other devices. Storage area network essentials electronic commerce has made traditional data storage methods obsolete.
A fibre channel broadband network or scsi dedicated interconnection equipment switches, bridges, etc. Zoning is a method of arranging storage area network devices into logical groups over the physical configuration of the fabric. Storage area network fundamentals presents the benefits of storage area networks sans to corporate users and enables them to deploy san technology effectively. A storage area network san is a secure highspeed data transfer network that provides access to consolidated blocklevel storage.
San storage area network is a highspeed network of storage devices that. This book was produced by a team of specialists from around the world. An san makes a network of storage devices accessible to multiple servers. The idea behind storage networks is that the scsi cable is replaced by a network that isinstalled in. A san presents storage devices to a host such that the storage appears to be locally attached. Information storage and management ism is the only course of its kind to fill the knowledge. Introduction to vmware infrastructure 12 vmware, inc.
Fibre channel is primarily used to connect computer data storage to servers in storage area networks san in. The storage devices in the storage area network together form the storage layer. Introduction to storage area network charles sargurudoss. Also, the increasing complexity of managing a large numbers of storage devices and vast amounts of data is driving greater business value into software and services. Introduction to storage area networks ibm redbooks.
Internally scsi and raid will commonly be implemented. Network attached storage nas enables the sharing of storage through the network and protocols such as nfs and cifs. With current estimates of the amount of data to be managed and made available increasing at 60 percent each year, this outlook is where a storage area network san enters the arena. Front cover introduction to storage e area networks.
A san is a complete architecture that groups together the following elements. This article will give you knowledge about basics of storage area network san, so that you can know what are advantage and need of san. A san typically is a dedicated network of storage devices not. 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 is a single storage device that operates on data files, while a san is a local network.
What is storage area network san storage tutorials. These are generally devices that are used for big businesses for backup purposes. What is san storage area network is a design to transfer data, from server to clients. Network attached storage vs storage area network duration. Ibm san solutions support virtualization, hybrid multicloud and big data requirements. Fibre channel fc is a highspeed data transfer protocol commonly running at 1, 2, 4, 8, 16, 32, and 128 gigabit per second rates providing inorder, lossless delivery of raw block data. Definition of san a storage area network san is a highspeed specialpurpose network or sub network that interconnects different kinds of data storage devices with associated data servers on behalf of a larger network of users. San training storage area networking training tonex.
If you know you need fiber channel this book has some utility, but as an. Wide area networks are often established with leased telecommunication circuits business, as well as education and government entities use wide area networks to relay data to staff, students, clients, buyers and suppliers from various locations. Introduction to storage area network san jie feng winter 2001. The inside scoop on a leadingedge data storage technology. This is the same way in which scsi hard disk drives work if they were installed directly in the server. They can be uniquely identified in the storage area network. It is alternative to the directly attached targets. Sg24547000 international technical support organization. What is sanstorage area network is a design to transfer data, from serverto clients. An introduction to storagearea networks and network.
Also, the increasing complexity of managing large numbers of storage devices and vast amounts of data is driving greater business value into software and services. San white papers san architecture, storage network. Overview the term san designates a new type of storage architecture in which the storage systems are attached to a high speed network dedicated exclusively to storage. This speeds up the backup process and eliminates the need to use server cpu. 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. Ibm redbooks, introduction to storage area network, san. Detail explanation of san storage architecture what is san and how san storage works duration. With storage area networks san, we typically see this solution used with mediumtolarge size businesses, primarily due to the larger initial investment.
In this study guide, you will learn how the local area networks can be established using these network system. Introduction to storage area network san utilize windows. Storage area network san management reliability and uptime can be enhanced by incorporating good architecture. 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. All the storage devices contain a number known as the logical unit number lun. A san, or storage area network, is a dedicated network that is separate from. Introduction to storage area networks july 2006 international technical support organization sg24547003.
In fact, if our sever wants to use san storage, it uses scsi type commands, just as it would use them as if. Fibre channel to link peripheral devices such as disk storage and tape libraries san vs. Typically, a storage area network is part of the overall network of computing resources for an enterprise. An introduction to storagearea networks and network attached storage learn more about fibre channel sans, san switches, nas clusters, nas virtualization and other network storage technologies. Summary 1what is san 2basics of san 3architecture of san4basic mechanism of san 3. Each san port can support a particular communication speed and a fibre channel switch may offer 1 gb, 2 gb, or. This is an introduction to storage area network presentation that i did for herzing university in atlanta, ga. With the globalization of business, data centers need to provide services. A storage area network san or storage network is a computer network which provides access to consolidated, blocklevel data storage. Only devices that are authorized to access a particular storage resource are allowed to do so. Storage area network san installation and configuration.
Youve invested heavily in securing your applications, operating systems, and network infrastructure. Sticky august 4, 2017 uncategorized kmitit4yr2semsanmaterial. It is primarily used as the storage device server can access this. Introduction to storage area networking this chapter describes in general terms the benefits, the challenges, and risks of using a storage area network san. A wide area network wan is a telecommunications network that extends over a large geographical area for the primary purpose of computer networking. San devices appear to servers as attached drives, eliminating traditional network bottlenecks.
Furthermore, storage networks open up new possibilities for data management. A storagearea network san is a dedicated highspeed network or subnetwork that interconnects and presents shared pools of storage devices to multiple servers. Designing storage area networks guide books acm digital library. Storage area networks sans are entities in a network architecture that provide large amount of access to storage. Ccde introduction to storage networking and design. Zoning adds another level of security to a storage area network because it controls access to a san from a host device. The volume and value of enterprise data have been grow. They offer a high speed of network for storage the biggest producers are emc corporation, dell.
Storage area network san is a separate network that provides blocklevel storage as compared to the nas that provides filelevel storage. This edition applies to the products in the ibm storage area networks san. Many users of raid system cannot use the capacity effectively because it has to be attached to a concept called storage area network san. Oversubscription, in a san storage area network switching environment, is the practice of connecting multiple devices to the same switch port to optimize switch use. 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.
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