Networkattached storage nas is basically a lanattached file server that serves files by using a. Aug 05, 20 this is an introduction to storage area network presentation that i did for herzing university in atlanta, ga. What is san storage area network is a design to transfer data, from server to clients. These io networks, called storage area networks sans, provide better. That is, one network can be connected to another network and become a more powerful tool because of the greater resources. Compared to managing disks attached to each server, sans improve system administration. Apr, 2020 storage area networks and network attached storage provide networked storage solutions. Tape is also useful to restore files from a particular point in time, such as endofquarter sales figures. Network attached storage nas is basically a lanattached file server that. A san typically has its own network of storage devices that are generally not accessible through the local area network by other devices. A storage area network san is a high availability device used to interconnect computers and networks to a central repository of data. What is sanstorage area network is a design to transfer data, from serverto clients. Chapter 1 introduction contents servercentric it architecture and its limitations storagecentric it architecture and its advantages case study. Storage area network as a networked high speed enterprise infrastructure nt windows nt.
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. San storage area network an array of disk drives in a selfcontained unit. Introduction of storage area network linkedin slideshare. Nas provides the advantages of server consolidation by eliminating the need for multiple file servers. 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. Sans usually use fiber channel to connect servers to storage devices trough a type of network connection. Before joining the itso in 1997, he worked for ibm storage systems nordic. 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. It is also highly performance storage device enabling to communicate with one another. Basic overview about superxpert storage server technology the storage system is not attached to any network.
The market perception of storage area networks computing is based on data. Sans 4 unite storage and ip networking enabling ip and ethernet infrastructure to be used for expanding access. This course focuses on the planning and implementation considerations associated with. Storage area network san technology has a bright future as measured by its growing market acceptance.
Introducing basic network concepts 3 basetech networking concepts team 2230894 blind folio 3 figure 1. San and nas, or network attached storage, exhibit similarities as well as differences. Furthermore, storage networks open up new possibilities for data management. A storage area network is a network whose main purpose is to transfer data between storage devices and servers and among storage devices. An introduction to storagearea networks and networkattached storage learn more about fibre channel sans, san switches, nas clusters, nas virtualization and other network storage technologies. Network attached storage nas is basically a lan attached file server that serves files using a network protocol such as network file system nfs. He writes extensively and teaches ibm classes worldwide on all areas of storage solutions. Local area networks were getting cobbled together using products such as ibms lan manager and novell netware. Pdf storage area network fundamentals researchgate. Storage area network san installation and configuration. Nas supports file transfers, in which it will back up any data that appears in the form of files, such as email boxes, web content, remote system backups.
Proper execution of enterprise management functions not only supports the power system functional requirements such as ensuring connectivity and enforcement of policies, but also the nonfunctional requirements such as providing quality of service, ensuring reliable and securing communications. Storage networks explained covers the fundaments, techniques and functions of storage networks such as disk subsystems, fibre channel san, internet scsi iscsi, fibre channel over ethernet fcoe, network attached storage nas, file systems, and storage virtualization. Introductionsan overviewsan technologies and solutionsother storage networking. Because all data storage was located inside each individual server, you had no effective way to efficiently allocate storage space between all the servers. In fact, if our sever wants to use san storage, it uses scsi type commands, just as it would use them as. Storage area network as a service for cloud computing chapter 7. It seems that everywhere you turn these days, you hear someone talking about storage area network san storage. The tivoli storage manager server maintains the server database and recovery log, and acts as the library manager. A storage area network san or storage network is a computer network which provides access to consolidated, blocklevel data storage.
Describe the challenges associated with data center networking and the need for switch network convergence. What is a storage area network file system san file. Introduction to storage area network, san ravi kumar khattar, mark s. Importance of data stored data and information that it contains are the prized possessions for a company. Introduction to storage area network, san august 1999. A list of references on storage area networks and fiber channel. Storage area network a storage area network san is architecture to attach remote computer storage devices such as disk arrays, tape libraries and optical jukeboxes to servers in such a way that, to the operating system, the devices appear as locally attached. A nas is a single storage device that operates on data files, while a san is a local network of several devices. Sure, users could share files over a lan, but you still needed a way to share access to the physical disks in every server. A san storage area network provides systems with highspeed, lossless access to highcapacity storage devices. This paper describes the motivation, architecture and implementation of isan, an. A local area network, or lan, consists of a computer network at a single site, typically an individual office building. Introduction to storage area network san utilize windows. Storage area networks including storage architectures, logical and physical components of a storage infrastructure, managing and monitoring the data center.
Hard disk storage really started in 1957 when ibm introduced its 24platter 5gb hard drive. However, the two technologies diverge when it comes to several characteristics, including. Computers on a network can be connected through twisted pair cables, telephone lines, radio waves, satellites or optical fiber. Chapter 1 introduction contents servercentric it architecture and its limitations storage centric it architecture and its advantages case study.
It is alternative to the directly attached targets. Introduction to storage area networks semantic scholar. In this chapter storage area networks sans are introduced as a mean to overcome the limitations of. Although a san provides only blocklevel access, file systems built on top of sans do provide. Tape is also useful to restore files from a particular point in time, such as endof quarter sales figures. Sep 11, 2012 what is sanstorage area network is a design to transfer data, from serverto clients. Sanbased storage systems suffer from two sources of overhead that can obscure the performance of the. No storage technology offers more promise than sans.
Introduction to storage area networks computer network. 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. The storage agent is available with the tivoli storage manager for storage area networks product. Addresses are numeric quantities that are easy for computers to work with, but not for humans to remember. A storagearea network san is a dedicated highspeed network or subnetwork that interconnects and presents shared pools of storage devices to multiple servers. This chapter identifies characteristics, architectural concepts, technologies, applications, and marketplace of storage area networks sans. Free chapter download download this computer networking pdf excerpt from computer networks, a book that addresses the key principles of computer networks.
That means that multiple vms can share the same files with both read and write access. Nystromis a cross storage solutions specialist at the international technical support organization, san jose center. Thats because fiber channel storage area networks use blocklevel io. Replacing a server with storage networks the data storage and the data access problem the battle for size and access. This type of storage does not have to be limited only to the internal storage. Comparing and contrasting storage area networks with network attached storage. Storage area networks sans are sometimes referred to as network behind the servers. Some networks are categorized by their function, as opposed to their size. In addition to storing data, sans allow for the automatic backup of data, and the monitoring of the storage as well as the backup process.
Sans, or storage area networks, are highspeed, dedicated networks that connect data storage tools with larger networks. Peer to peer networking clientserver networks are more suitable for larger networks. A storage area network file system san file system is a scalable, sanbased and highly available file system and storage management solution. Ppt storage area network san powerpoint presentation. Sans are typically composed of hosts, switches, storage elements, and storage devices that are interconnected using a variety of technologies, topologies, and protocols. Detail explanation of san storage architecture what is san and how san storage works duration. This edition applies to the products in the ibm storage area networks san portfolio. In the mid80s, fueled by the explosive growth of pcs, the move toward pc based networking gained pace.
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. Jun 12, 2012 a crash course in storage area networking part 3 a crash course in storage area networking part 4 a crash course in storage area networking part 5 a crash course in storage area networking part 6 introduction. A storage area network san provides highperformance, highlyavailable disk storage that serves as a centralized repository for an organizations mission critical data. Storage has never been more critical to your successand by 2005 it may account for up to 70% of your it budget. Each of the devices on the network can be thought of as a node. Introduction to computer information systemsstorage. Also explore the seminar topics paper on storage area networks with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year computer science engineering or cse students for the year 2015 2016. Understand storage area networks characteristics and components.
Today, most sans use fibre channel media, providing an anytoany connection for processors and storage on that network. At first, sans were expensive and proprietary, but. There are some diskenclosures which contain the hard disk drives are can be used externally for the storage purposes. The idea behind storage networks is that the scsi cable is replaced by a network that isinstalled in. Nas is a preferred storage solution that enables clients to share files quickly and directly with minimum storage management overhead. Storage area networks and the high performance storage system. Data traffic on these networks is very similar to those used for internal disk drives, like ata and scsi. A vpn virtual private network allows for information to be securely sent across a public or unsecure network, such as the internet.
Types most storage networks use the scsi protocol for communication between servers. 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 devices storage area networks page 1 calhoun. Storage networks provide a centralized repository for digital data that can be accessed by many users, and they use highspeed connections to provide fast performance. Storage area networks storage area networks san, which also include iscsi, are distinguished from other forms of network storage by using a blockbased protocol and generally run over an independent, specialized storage network.
It provides storage consolidation through filelevel data access and sharing. The ibm spectrum protect environment provides ways to securely move data to storage across various types of networks and configurations. The storage solution rutgers cs rutgers university. This is an introduction to storage area network presentation that i did for herzing university in atlanta, ga. What is storage area network san storage tutorials. A san is, at its simplest, a dedicated network for data storage. A lan is very useful for sharing resources, such as data storage and printers. It is primarily used as the storage device server can access this. For more information about blob storage, see introduction to blob storage. Nas is a type of dedicated file storage device typically connected by a wired networking connection, therefore only providing local area network users with storage. They must be able to add capacity with very short planning windows and. A storage area network san or storage network is a computer network which provides access.
Itis primarily used as the storage device server can access this. They facilitate the communication between computer systems and each other by connecting to pools of storage via san switches. Introduction to storage area networks jon tate fabiano lucchese richard moore learn basic san terminology and component uses introduce yourself to the benefits a san can bring discover the ibm totalstorage san portfolio front cover. Nows the time to understand them, and this is the book. For example, we can buy a fiber channel card and install it on our server. The introduction of networking concepts and technologies as a replacement of a sin. Motivation nonvolatile memories that offer order of magnitude increases in performance require us to reshape the architecture of storage area networks sans. A storage area network is usually clustered in close proximity to other computing resources such as ibm z990 mainframes but may also extend to remote locations for backup and archival storage, using wide area network carrier technologies such as atm or sonet. Storage area networks sans established their role as the heart of enterpriselevel primary storage in the early 2000s.
Introduction to storage area networking this chapter describes in general terms the benefits, the challenges, and risks of using a storage area network san. Storage area network architectures technology white. A computer network consists of two or more computers that are interconnected with each other and share resources such as printers, servers, and hardware and exchange the data in the form of files, facilitating electronic communication. An introduction to storagearea networks and networkattached.
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. Storagearea networks sans established their role as the heart of enterpriselevel primary storage in the early 2000s. This is the same way in which scsi hard disk drives work if they were installed directly in the server. A central computer, or server, acts as the storage location for files and applications shared on the network. Introduction to storage area networks july 2006 international technical support organization sg24547003.
On the path to implement storage area networks and network attached storage. A common problem in many corporate enterprise systems is. This document examines the options that colt can provide customers to connect data centres together in a secure manner. Storage area networking fundamentals global knowledge. Summary 1what is san 2basics of san 3architecture of san4basic mechanism of san 3. Storage area network as a networked highspeed enterprise. By contrast to a san, network attached storage nas uses file based protocols.
San solutions are usually connected using a fibre based optical connection with varying configurations in terms of storage capacity and redundancy levels. 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 could greatly enhance the performance of the san in highbandwidth environments. Storage networking is the practice of linking together storage devices and connecting them to other it networks. Through the storage agent, the client can directly back up and restore data to a tape library or shared file system such as gpfs. Storage area networks seminar report and ppt for cse. Introduction to storage area networks ibm redbooks. A storage area network san is a specialized, highspeed network that provides blocklevel network access to storage. Data is the underlying resource on which all computing processes are based. The term storage area network can be a synonym of the term storage network, but differs in that the term storage area network is usually identified with a network with blocklevel io services rather than file access services. Explore storage area networks with free download of seminar report and ppt in pdf and doc format. 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. It is used to aggregate files and share concurrent data in a multiplatform and open environment. In large enterprises, sans serve as pools of storage for the servers in the network.
Introduction to storage area networks free download as powerpoint presentation. In chapter 1, foundation, learn how local and wide area networks wans are now built to connect more than computers. Introduction to azure storage cloud storage on azure. Storage area networks sans connect storage systems to one or more servers through a low latency network dedicated to providing access to storage resources. Importance of data stored data and information that it contains are the prized possessions for a. Storage area network article about storage area network. A san has many advantages over traditional serverbased storage including increased flexibility in allocating storage to servers, the. At first, sans were expensive and proprietary, but since the 2010s, sans. The storage area network san infrastructure facilitates storage consolidation, data sharing, server clustering, lanfree and serverless backup across heterogeneous host server platforms. Ethernet media using an io protocol called iscsi is. Azure files enables you to set up highly available network file shares that can be accessed by using the standard server message block smb protocol. It uses san technology, which helps enterprises connect and share.
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