While hard disk p r ices continue to dro p,re c o n f i g u ri n g the disk drive s inside a network server isnt a simple. In this installment, well look at the main considerations you should keep in mind when putting together a storage area network design. Each storage unit should connect to both switches, as should each server. Feb 27, 2014 these upgrades have typically happened gradually as the cost of nextgeneration storage network components such as adapters and switches continues to drop. Storage area network san architecture refers to the logical layout of a san infrastructure. Storage area network as a networked highspeed enterprise infrastructure nt windows nt. A san, or storage area network, is a dedicated network that is separate from. Storage area network if you have a more demanding san environment, the dell emc cx400 is a versatile, rackdense midrange 2gb fibre channel storage array offering up to. Introduction to storage area networks ibm redbooks. The best place to start when explaining storage area networks is with fibre channel, the original san protocol. Storage area network architectures technology white.
Storage area networks, such as ibm system engineers, ibm business partners, system. You can never be too ri c h, be too t h i n, or have too much data storage on your netwo r k. A vpn virtual private network allows for information to be securely sent across a public or unsecure network, such as the internet. Exchange of information by means of emails and ftp. Sharing of data between the group of servers is possible by connecting them through storage area networks. One of the major differences is the geographical area they cover, i. Storage area network san learning path benefits any storage professional who deploys and manages multisite, multivendor san environments. 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. To do the wrong plan is the causes the problem in storage area network. San storage area network tutorials for the beginners online training in indiausagulfuk duration. Ppt storage area network san powerpoint presentation. My name is ross bagurdes, and welcome to my course, introduction to enterprise network infrastructure.
Storage area network as a service for cloud computing chapter 7. Storage area network san security refers to the collective measures, processes, tools and technologies that enable the securing of a san infrastructure. 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. The idea behind storage networks is that the scsi cable is replaced by a network that isinstalled in. There are some similarities and dissimilarities between them. Fibre channel is still the most popular san protocol today, although iscsi and fibre. Key considerations in developing a storage area network design. 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.
Today, fibre channel is the architecture on which most san implementations are built. A storage area network for fast, distributed, solid. Types of area networks lan, man and wan geeksforgeeks. Storage area network san installation and configuration. Why information services professionals should be interested in storage networking. The data exchanged, known as protocol data unit pdu, goes back and forth through the layers. This is certainly true of storage area networks sans. Storage area network brocade san architectural brief overview although storage networking technologies are commonly available to the entire market, each enterprise or institution is unique. The storage data is very secure on the storage area network and cannot be copied or stolen by anyone else. Issues in the connection and cable in storage area network. Storage network architecture is the conceptual structure and logical organization of a. A san is a specialized highspeed network of storage devices and switches connected to computer systems. Storage area network brocade san architectural brief. Storage area network san implementation in simple words san is a highspeed, dedicated network of servers and shared storage devices and provides access to consolidated, block level data storage.
Nas arrays, fibre channel san arrays, and iscsi san arrays are most frequently used storage technologies. How the san is logically created components used data storage and retrieval frameworks devicehost interconnectivity other parameterscomponents essential for a san. High capacity, high availability, high scalability, ease of configuration, ease of. Each port can be flexibly configured as either a 4x infiniband port or a 10 gigabit ethernet xauicx4 or xfi port based on oem preferences. You will learn to configure brocade andor cisco san switches, clariion andor associate symmetrix storage. Pc shipments to large customers units in thousands 0 2,000 4,000 6,000 8,000 10,000 12,000 1q95 3q95 1q96 3q96 1q97 3q97 1q98 3q98 1q99 3q99 1q00 3q00 1q01 17. Vmware vsphere supports these techniques to meet data center storage requirements. Auspex storage architecture guide is designed to help ceos, cios and network administrators understand these architectures and. Complete enterprise network infrastructure tutorial. A lan is very useful for sharing resources, such as data storage and printers. Storage virtualization helps the storage administrator perform the tasks of backup, archiving, and recovery more easily, and in less time, by disguising the actual complexity of the san.
System dependent network attached storage nas nas scalability. The infiniband port supports single, double and quad data rates sdr, ddr and qdr delivering 10, 20 and 40gbs full duplex bandwidth. It seems that everywhere you turn these days, you hear someone talking about storage area network san storage. A storage area network san is a specialized, highspeed network that provides blocklevel network access to storage. Computer systems and peripherals are connected to form a network. It was more suited for delivering storage because of its lossless and highspeed nature. Sure, users could share files over a lan, but you still needed a way to share access to the physical disks in every server. Tutorials it and computing storage area network san. Basic san switch, plus scalability and high availability. A storage area network san is a secure highspeed data transfer network that provides access to consolidated blocklevel storage. An internet is a network of networks in which routers move data among a multiplicity of networks. It is a broad process that ensures that the san infrastructure operates securely and is protected from any vulnerabilities. Storage area networks unit 2 notes linkedin slideshare. To make sure this path isnt a point of failure, your client should buy two switches for the san network.
Here storage area network san come into picture which is basically a combination of computers and storage devices connected in a network. This can be useful if there is a primary data failure or natural disaster. Storage performance is enhanced using a fast interface, such as fibre channel fc, that connects storage servers and storage devices through an array of switches and hubs to form a fabric that supports both redundancy and high availability. The network made use of a different network protocol more suited for storage networking called fibre channel protocol. These two technology shifts have produced three mutually coexistent methods for connecting storage to computing platforms. 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. Introduction to storage area networks july 2006 international technical support organization sg24547003. To learn more about the architecture and specification of ifcp, refer to the. For these readers, discussions of basic server and storage concepts should assist in bridging the gap between networking and storage worlds. An introduction to storage area networks and network attached storage learn more about fibre channel sans, san switches, nas clusters, nas virtualization and other network storage technologies. Tutorials storage area network san the director switch. Network protocols are designed based on a layered architecture such as the osi reference model. Behind the acronyms and revolutionary headlines, lies a technology designed to provide a way of offering one of the oldest of network services, that of making access to data storage devices available to clients.
Designing storage area networks, second edition, succinctly captures the key technologies that are driving the storage networking industry. Data placement on the disks, and the way blocks belonging to a single. Ip storage is an approach to build storage networks upon tcp, ip and ethernet. Sticky august 4, 2017 uncategorized kmitit4yr2semsanmaterial. Each entity at a layer n communicates only with entities at layer n1. Using esx server together with a san provides extra storage for consolidation, improves. Four generations of sans shares of leading companies in the san market gardner 2004.
Data networks use specialized hardware to move data from one point to another. What is storage area network security san security. Networkattached storage nas and storage area networks san. Introduction to san and nas storage understand the basics plus more of storage area networks san and network attached storage nas rating. This problem is especially acute in storage area network san environments where complex hardware and software layers distributed. The storage area network contains the fiber cables. The deep buffer architecture of the arista 7280r and 7500r series switches provides a platform for lossless asymmetric connections with 10g, 25g, and 50g nodes, such as storage devices and compute nodes. Driving storage performance over ethernet networks switch port buffering is a critical consideration in ip based storage networks. Storage area network san a storage area network san is a specialized, dedicated high speed network joining servers and storage, including disks, disk arrays, tapes, etc. Pdf this chapter identifies characteristics, architectural concepts, technologies, applications, and marketplace of storage area networks sans. Because all data storage was located inside each individual server, you had no effective way to efficiently allocate storage space between all the servers. A storage area network san is defined as a set of interconnected devices for example, disks and tapes and servers that are connected to a common communication and data transfer infrastructure such as fibre channel. This edition applies to the products in the ibm storage area networks san portfolio. Ethernet media using an io protocol called iscsi is emerging in 2001.
Storage data store is separated from the processors and separated processing. San devices appear to servers as attached drives, eliminating traditional network bottlenecks. Information processing capabilities enabled by storage area networks. Sans are typically composed of hosts, switches, storage elements, and storage devices that are interconnected using a variety of technologies, topologies, and protocols. Storage area network san installation and configuration guide. E engineering computer science cse sem 8 storage area networks san download wondering how to thank us. There can be hybrid network which involves network architecture of both the above types. An introduction to storagearea networks and networkattached. Tom clarks works are helping to educate the it community to the benefits and challenges of shared storage and are recommended reading for anyone wishing to understand this exciting new technology. 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. With the announcement of the new dell storage scv2000 series arrays, customers now have a highly capable, enterprise class, entrylevel storage solution that brings many of the benefits of dell s more advanced sc4000 and sc8000 sanbased products. The changing of zoning every time is tough because it contains the 16 bits of hexadecimal code in common worldwide names wwns networks. A san typically is a dedicated network of storage devices not.
Typically, a storage area network is part of the overall network of computing resources for an enterprise. I am a network engineer with more than 20 years experience building enterprise networks and teaching people about them. Storage virtualization is commonly used in a storage area network san. A san typically has its own network of storage devices that are generally not accessible through the local area network by other devices. Lan, man and wan are the three major types of the network designed to operate over the area they cover. A study paper on storage area network problemsolving issues. Customizing an implementation to meet your specific needs therefore requires an understanding of your organizations primary business requirements.
Storage area network architectures technology white paper. Resource sharing such as printers and storage devices. To make nas fault tolerant, nas systems usually contain one or more hard disks, often arranged as raids. Related terms such as storage area network and network attached storage are described in separate entries.
A storage area network san is a high availability device used to interconnect computers and networks to a central repository of data. To learn more about the architecture and specification of ifcp, see the document at this website. An san makes a network of storage devices accessible to multiple servers. Over all other storage networking technologies, including fibre. Fibre channel san storage overview tutorial video youtube. In addition to storage and server administrators, networking professionals who use sans as an extension of the local and wide area enterprise network may also find value in this book. In a typical storage area network design, each storage device connects to a switch that then connects to the servers that need to access the data. One directorclass switch can supplant multiple san switches and deliver scalability, high availability and a number of advanced features for fibre channel sans.
The importance of software to storage area networks. The internet protocol used in the san environment will be usually over gigabit ethernet. Pdf storage area network fundamentals researchgate. The common communication and data transfer mechanism for a given deployment is commonly known as the storage fabric. Ip storage in a generalized way can be termed as utilizing internet protocol ip in a storage area network san. There can be a remote copy of the storage data kept separately using the storage area network.
Storage area network san is a specialized, highspeed network that provides blocklevel network access to storage. What properties a storage area network must have, should have, and may have. Pdf introductionsan overviewsan technologies and solutionsother storage networking technologiesstandardsstorage networking associations, initiatives. Storage area networks provide connectivity to the virtual server using either the fibre channel fc or iscsi protocols. Today, most sans use fibre channel media, providing an anytoany connection for processors and storage on that network. Storage area networks seminar report and ppt for cse students.
What is storage area network architecture san architecture. Ethernet media using an io protocol called iscsi is. Furthermore, storage networks open up new possibilities for data management. San solutions are usually connected using a fibre based optical connection with varying configurations in terms of storage capacity and redundancy levels. Oct 01, 2008 networkattached storage nas and storage area networks san networkattached storage nas is a filelevel computer data storage device that is connected to a computer network to provide shared drives or folders. Essentially, the storage network is typically on a slow, rolling upgrade as new servers are added to the data center. Sg24547000 international technical support organization. What is storage area network san storage tutorials. This chapter identifies characteristics, architectural concepts, technologies, applications, and marketplace of storage area networks sans. Storage area networks and green data centers chapter 12.
While we believe that many aspects of the storage industry. Introduction to storage area network, san ravi kumar khattar, mark s. The network allows computers to connect and communicate with different computers via any medium. This network is referred to as a storage area network, or san, as shown in figure 23. Introduction to storage area networking this chapter describes in general terms the benefits, the challenges, and risks of using a storage area network san. The management of storage devices can be tedious and timeconsuming. This service is more advanced with javascript available, learn more at. A storage area network san or storage network is a computer network which provides access to consolidated, blocklevel data storage. Storage area network san ip storage networking arista. A san storage area network provides systems with highspeed, lossless access to highcapacity storage devices. Storage area networksan white papers san architecture.
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