Introduction to vmware infrastructure 12 vmware, inc. This arrangement allows aggregation of the storage resources and provides more flexibility in provisioning them to virtual machines. Understand the basics plus more of storage area networks san and network attached storage nas free course. Small disk subsystems have one to two connection ports for servers or storage networks, six to eight hard disks and, depending on the disk capacity, storage capacity of a few terabytes regardless of storage networks, most disk subsystems have the advantage that free disk. Mar 31, 2011 this is certainly true of storage area networks sans. A storage area network san is a specialized, highspeed network that provides blocklevel network access to storage. Our experience in primary, secondary and hyperconverged storage, and nas and object solutions has given us a greater understanding of your needs than singlefocus vendors have. Storage area networks provide connectivity to the virtual. Your data flow is only as fast as your network connectivity allows. 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.
San white papers san architecture, storage network. Server centric it architecture and its limitations. Introduction to storage area networks computer network. A storage area network san server is a type of storage server that provides sanbased storage infrastructure within an it environment or enterprise. Nov 17, 2012 introduction to storage area networks and system networking ibm redbooks on. A smarter data center that hosts ibm storage solutions can provide an environment that is smarter, faster, greener, open, and easy to manage.
Pdf storage area networks fundamentals researchgate. Servers and systems storage networking software options services shop. Storage area network as a networked highspeed enterprise. How storage area networks differ from direct attached storage networks. Our new crystalgraphics chart and diagram slides for powerpoint is a collection of over impressively designed datadriven chart and editable diagram s guaranteed to impress any audience. Storage area networking systems and services hpe india. The difference between storage area networks and cloud storage is that san systems are hosted through a companys own servers, while the cloud stores it virtually via internet servers.
Introduction to storage area networks exhaustive introduction into san, ibm. Storage networking is very similar to other kinds of it networking. A san presents storage devices to a host such that the storage appears to be locally attached. Networkattached storage nas and storage area networks. The ip approach to storage is server centric due to the fact that it can be transported over a standard ip infrastructure, including traversal of layer 3 boundaries. Introduction to storage area network san utilize windows.
Introduction to storage area networks and system networking. San storage is sharable, resources may be easily shared between multiple virtual server hardware devices. Sg24547000 international technical support organization. Introduction to storage area networks an ibm redbooks publication. From wikiversity servers to organize many distributed smb file shares into a distributed file system. The market perception of storage area networks computing is based on data. Traditionally, servers have formed the back end of a business, and a data network has been built in front of the servers to allow clients access to their locally attached storage. 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. Ibm provides this through flexible, scalable, and open standardsbased intelligent san switches, directors, and routers throughout your global enterprise. Local area network designintroduction to storage area networks. Introduction to storage area networks july 2006 international technical support organization sg24547003.
In other words, storage becomes another application on the network, albeit a mission critical one. Introduction to fibre channel storage area networks san. Introduction to storage area networks, ibm account registration. Its no longer possible to get by as an it professional by knowing only servers, networking or storage, you need an understanding of all three for your career to thrive. An san makes a network of storage devices accessible to multiple servers. Pdf this chapter describes fundamentals of storage area networks sans, their architectural elements interfaces, interconnects, and fabrics. A san server is a purposebuilt server that combines san management utilities and san infrastructure in a single server, comprising all resources required for. 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. A storagearea network san is a dedicated highspeed network or subnetwork that interconnects and presents shared pools of storage devices to multiple servers. Ip networks each computing server can have multiple nics to provide high. Usually the server is a higher than average file and print server cd or multimedia servers other users, computers users computers cache, proxy, filtering, firewall server. Computer data storage, often called storage or memory, is a technology consisting of computer components and recording media used to retain digital data. Types most storage networks use the scsi protocol for communication between servers.
A storage area network san is a secure highspeed data transfer network that provides access to consolidated blocklevel storage. This is the same way in which scsi hard disk drives work if they were installed directly in the server. While networkattached storage nas and storagearea network san. Chart and diagram slides for powerpoint beautifully designed chart and diagram s for powerpoint with visually stunning graphics and animation effects. A san is, at its simplest, a dedicated network for data storage. Data center concepts and constructs introduction prior to the existence of data centers, computing, storage, and the networks that interconnected them existed on the desktop pcs of enterprise selection from sdn. This is the same way in which scsi hard disk drives work if. Storage area networks are also defined by their interconnection scheme, which usually falls into either fc or iscsi. Sans are often confused with the other common kind of networked. A smarter data center that hosts ibm storage solutions can. In this ppt we describe the introduction of storage area network.
The smarter data center is achieved by connecting servers and storage with a highspeed and intelligent network fabric. It makes sense to centralise management in larger organisations wherever possible. It is alternative to the directly attached targets. Published 19 december 2017, updated 09 october 2018. Introduction to san and nas storage understand the basics plus more of storage area networks san and network attached storage nas rating. A storage area network is a highspeed sub network of shared storage devices. Storage area networks, secure storage, key management, group key agreement 1 introduction continued growth and popularityof the internet fuels increased reliance on ebusiness which often involves dataintensive. Introduction to storage area network, san ravi kumar khattar, mark s. An introduction to storage area networks and networkattached storage learn more about fibre channel sans, san switches, nas clusters, nas virtualization and other network storage technologies. A sans architecture works in a way that makes all storage devices available to all servers on a lan or wan. Storage area network as a service for cloud computing chapter 7.
This is where a storage area network san enters the arena. Fc technology is clearly the most popular approach for enterprise data center sans. San architecture, storage network, server area networks, storage sans, storage area networks definition. The basic idea is adopting pause packets from the 802. Ppt storage area network san powerpoint presentation. How to choose the right storage technology network attached storage nas storage area network san storage solutions nas network attached storage iscsi ip san ethernet. Free course introduction to san and nas storage flackbox. Free storage area network tutorial introduction to san and. 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. 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. Storage area networks provide connectivity to the virtual server using either the fibre channel fc or iscsi protocols. A smarter data center that hosts ibm storage solutions can provide an environment that is smarter, faster, greener. At first sight, increasing the level of abstraction on the server seems well suited for environments without storage networks, but this can be vitally important in storage networks too.
A storage area network san or storage network is a computer network which provides access. This allows our scheme to be scalable and be free from any single point of failure or attack. Each san port can support a particular communication speed and a fibre channel switch may offer 1 gb, 2 gb, or. Just as you can connect multiple pcs and servers into a local area network lan or a wide area network wan, you can connect multiple storage arrays into a storage area network san. Clientserver networks are more suitable for larger networks. This is important in clustered virtual server environments. Thats because fiber channel storage area networks use blocklevel io.
Jul 03, 2015 detail explanation of san storage architecture what is san and how san storage works duration. Ibm san solutions support virtualization, hybrid multicloud and big data requirements. Storage area network san ip storage networking arista. The smarter data center with the improved economics of it can be achieved by connecting servers and storage with a highspeed and intelligent network fabric.
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. 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. You can search for, view, or download redbooks, redpapers, hints and tips. An introduction to storagearea networks and network. A central computer, or server, acts as the storage location for files and applications shared on the network. San devices appear to servers as attached drives, eliminating traditional network bottlenecks. The bursty nature of the ip storage networking flows cannot be overlooked.
Jul 15, 2015 storage area network configuration utilizing dell n2000 series switches, dell poweredge servers and dell equallogic ps series arrays part 1 presented by craig huck manager integrita systems. Primary storage or main memory or internal memory, often referred to simply as memory, is the only one directly accessible to the cpu. Summary 1what is san 2basics of san 3architecture of san4basic mechanism of san 3. Managing data storage is just as much of a task or greater as managing the servers themselves. Introduction to storage area networks free download as powerpoint presentation. 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. San white papers san architecture, storage network, server. What is sanstorage area network is a design to transfer data, from serverto clients. A san, or storage area network, is a dedicated network that is separate from lans. Due to its ability to connect large numbers of servers to storage devices, san technology is used heavily by cloud technology creators. Build highly available storage at a fraction of the cost of san or nas using storage spaces direct and industrystandard servers with local storage and ethernet. Physical topology of vi datacenter as figure 2 shows, a typical vmware infrastructure datacenter consists of basic physical building blocks such as x86 computing servers, storage networks and arrays, ip networks, a.
The composition of that network and the type of storage data traversing it vary from one architecture to another. 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. This edition applies to the products in the ibm storage area networks san portfolio. Storage area networks sans are sometimes referred to as network behind the servers. This method offers low cost and optimal performance, allowing swift access to. As more storage devices are added to a san, they too will be accessible from any server in the larger. Sans are highly scalable, both from a capacity and performance perspective.
Raid storage systems, hubs, switches, bridges, servers, backup devices. To make nas fault tolerant, nas systems usually contain one or more hard disks, often arranged as raids. Introduction to storage area networks semantic scholar. Introduction to storage area networks ibm redbooks. Our storage networking portfolio is a reliable, highperformance storage connectivity platform. In other words, with san, our servers will think that the raid array that we have connected to the fiber channel switch is installed right in the system. However, the server through which the storage devices are accessed is a single point of. We also describe the basics, architecture and mechanism of san. Storage area network configuration utilizing dell n2000 series switches, dell poweredge servers and dell equallogic ps series arrays part 1 presented by craig huck manager.
Introduction to storage area network, san ibm redbook. Johnsons answers are available as an mp3 download or you can read a. Since the storage is no longer controlled by individual servers, it can be used by any server as needed. An introduction to storagearea networks and network attached storage. During the past decade, data storage has become one of the most important resources for the corporate enterprise.
San applications a san storage ar ea network is a networked highspeed infras tructure subnetwork that establishes direct access by servers to. Sep 11, 2012 introduction of storage area network 1. Storage centric it architecture and its advantages. Introduction to storage area networks and system networking ibm redbooks on. A storage area network san or storage network is a computer network which provides access to consolidated, blocklevel data storage. Buy storage area network san software, hardware, switches, adapters, devices, tools and services for your enterprise. Free storage area network tutorial introduction to san. An introduction to storagearea networks and networkattached. This ibm redbooks publication provides an introduction to san and ethernet networking, and how these networks help to achieve a smarter data center. 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. My free introduction to san and nas storage course will give you the knowledge you need to understand centralized storage. With the amount of information businesses are required to house, how to you know which storage solution works best for you. Sans provide scalability add servers and storage inde.
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