storage area network pdf

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For example, ﬁbre channel SANs for the Healthcare En-, backup, and medical image archiving (Farley, The SAN becomes a key element of the enter-, prise environment where data availability, Many enterprise solutions (e.g., ATTO FibreBridge prod-. IETF IP Storage Working Group in developing standards, for a new IP-based transport-through-network technology, that encapsulates ﬁbre channel and SCSI high-speed in-. The preventive strategies on plagiarism and cheating among students were developed and successfully implemented in the virtual classroom using the Cloud environment. (2002). Today, the vast majority of vendors selling SAN solutions are planning to provide both Fibre Channel and IP-based products to accommodate their customers' requirements.The people who have direct responsibility for designing and implementing SANs desperately need more detailed information on product capabilities and interoperability, i.e., what version of a particular backup application works with a specific database or operating system level. & Voruganti, K. (2003, Benefits section, para. these approaches will dominate in the future. service of modern e-business enterprises. A typical discrepancy in data communica-, channel fabric generates various ﬂow control issues that, can be resolved by TCP sliding-window algorithms. The IETF standards related to storage networ-, king (Barker & Massiglia, 2001, pp. Advances in Fibre Channel performance and switch technology, the introduction of SANs based on TCP/IP and Gigabit Ethernet, and the emergence of storage virtualization have given customers more options for addressing their data storage needs. Toigo, J. W. (2001). from http://www.mediainc.com/ The essential guide to storage area networks. SAN network can be accessed by multiple computers. Emulating the system environment of a line replaceable unit (LRU) to obtain complete functional test coverage. which delivers both block level and ﬁle access to data. In the first edition of Designing Storage Area Networks the underlying infrastructure or plumbing for SANs was exclusively Fibre Channel. Routers and bridges perform pro-, tocol transformation in SANs. Retrieved March 13, Cutting Edge, Inc. (2003). Chapter 2 provides an overview of storage and networking concepts and explains how the fusion of these ideas has created new means to solve data storage issues. The introduction of iSCSI for SAN made them far easier to deploy than for Fibre Channel SAN, because of the strong presence of TCP/IP in data centers. The author reviews the fibre channel interconnect technology, hardware and software components that are necessary for building a storage network. Chapter 10 discusses SAN management and its unique challenges. TCP/IP and related, protocols have been implemented in the server-based, systems that allow the most general storage networks, to be constructed with the iSCSI methodology, challenge is a reduction of the iSCSI processor over-, head of operating iSCSI packets below the Fibre Channel, developed by the standards of the InﬁniBand T. sociation (founded by Compaq, Dell, Hewlett-Packard, IBM, Intel, Microsoft, and Sun Microsystems) that of-, fers the most general low-cost server system topologies, InﬁniBand interfaces will be embedded into all Intel-, based servers (Barker & Massiglia, 2001, pp. This technology improves enterprise management and, mirroring, electronic tape vaulting, and wide area cluster-, ing. Storage Area Networks are standardized and have reached a plateau of functionality in terms of virtualization and storage management. 2 Gb/s fiber channel SANs. Hewlett-Packard, Inc. (2003). In SAN (Storage Area Network), Data is identified by disk block. Fibre channel technology is scalable and flexible due to its support of various topologies, such as dedicated. IP storage technology allows, embedding low-cost SANs into IP-based enterprise infras-. By using iFCP, nel fabric services can be provided to the remote FC de-, vices over a TCP/IP network. application service, even if the enterprise systems, (logical/virtual disk-like storage entities that, is a new emerging interconnect technology, Common Internet ﬁle system, also known as the, Common information model; an object-oriented, Dense wavelength division multiplexing; a, Fibre channel-arbitrated loop transport proto-. UNIT 1 Unit 1. Any stor-, age device on the loop can be accessed through a ﬁbre, channel switch (FCSW) or hub. Storage area network has the following: Under the ANSI X3T11 standards, regulation, up to 126 storage devices (nodes) can be linked. The InﬁniBand tech-, nology implements a switched-fabric architecture with, the packet-switching communication protocol (PSCP), that relates to the virtual interface (VI) architecture, tems area networks can effectively use InﬁniBand as a. high-performance/low-latency interconnect. 387–388) include the Guide to Stor-, age System Design; Media Management System (MMS), tion Protocol (SSAIP) of the MMS; Media Management, Protocol (MMP) for both client and administrative appli-. Storage area networks also separate storage traffic from general network traffic. Retrieved. Overcoming interoperability issues and management complexity are prerequisites to wider-scale adoption of SAN technology, and several industry initiatives are now attempting to address the remaining obstacles. The SNIA Shared Storage Model is a useful tool for understanding SAN architectures and positioning them in relation to upper layer application requirements. 388) include the, simple network management protocol (SNMP) for, managing and monitoring devices and systems in a net-. for transferring large ﬁles. storage area network (SAN): A storage-area network (SAN) is a dedicated high-speed network (or subnetwork ) that interconnects and presents shared pools of storage devices to multiple servers . Storage area networking. Network Buyers Guide (2003). Re-, Fibre Alliance (2003). SANs may also span multiple sites. Fibre channel–virtual interface architecture. paper) 1. successfully resolved in the iFCP and iSCSI approaches. The more customers and technologists align their common goals, the more quickly viable solutions can be put into the customers' hands. The most common SAN fabrics, are switched ﬁbre channel, switched SCSI, and switched, SSA, all of which physically link the interconnects and, determine the SAN’s performance and scalability, fabrics embed operating systems that provide for SAN, nected to the ﬁbre channel SAN through host bus adapters. Procom Technology Corporation (2003). A storage area network or storage network is a computer network which provides access to consolidated, block-level data storage. fabric (White Paper WP-2G0801). tium has consolidated the efforts of over 50 corporations, universities, and national labs in the ﬁeld of digital infor-, mation storage. The Holy Grail of data storage management. National Storage Industry Consortium (2003). The ASNA technology has been successfully ap-, plied to database management, data warehousing, e-mail, The SRM technology provides applications for managing, logical and physical storage-system resources (virtual de-, vices, disk volumes, ﬁle resources, storage devices and el-, ements, and appliances). UNIT 4 Unit 4. Chapter 1 reviews the Storage Networking Industry Association (SNIA) Shared Storage Model, which clearly abstracts the basic layers of storage applications and underlying infrastructure. Data can be directly written into, application memory through a steering and data synchro-, nization layer located below the iSCSI sublayer, curity across the Internet. The following organizations promote storage networking, technologies and products, develop standards, undertake, marketing activities in information technology industry, educate, train, and create the knowledge base for imple-, The SNIA, an international association of developers, of storage and networking products, is focusing on the, creation of a forum of IT companies, system integra-. Node ports 2. Fibre channel provides data, rates in the range from 133 Mbit/s to 4 Gbit/s over low-, cost copper cabling (shielded twisted-pair wire or coaxial, cable with DB-9 and HSSDC connectors) or higher-cost, multimode ﬁber-optic cable. of storage-centric enterprise information processing, SAN technology represents a signiﬁcant step toward a, fully networked secure data storage infrastructure that is, radically different from traditional server, age (Clark, 1999). More than 70 companies, including industry-leading vendors of disk arrays and, computer and networking systems, support the FC-AL vol-, untary standards. Although this contention has generated ongoing religious disputes among vendors, both Fibre Channel and Ethernet are, after all, simply plumbing. A NAS is a single storage device that operates on data files, while a SAN is a local network … A simple model of the storage area network, as a networked high-speed infrastructure is shown in, A SAN can be considered as an extended and shared. These problems have been addressed and. By contrast, the rapid and more volatile development of networking technology has overturned previous architectures and relationships and, as demonstrated by the Internet, has delivered a global capability with innovative and enriched feature sets. work of computing resources (Sachdev & Arunkundram, 2002). The main providers of SAN solutions are EMC Cor-, poration (about 40% of the market), Compaq Computer, Corporation (13%), Sun Systems, Inc. (11%), IBM Cor-, poration (10%), Hewlett-Packard Company (7%), Dell, Computer (3%), Hitachi Data Systems (2%), Brocade, SANs, networked high-speed infrastructures, enable, e-business enterprises to improve signiﬁcantly their 24, continuous scalable services. connects, enterprises build remote SANs that can be inter-, connected by means of the SAN-over-IP technology orig-, inally developed by the Computer Network T. Corp. The SANs architectures have been changed evolutionarily, adapting to new application demands and expanding ca-, pacities. Components of Storage Area Network (SAN): 1. Retrieved March 13, 2003, sentials: A complete guide to understanding & imple-. Beginning in 2000, the initiative to transport storage data over mainstream TCP/IP networks generated IP storage networking architectures and products. Beauchamp, C., Judd J., & Kuo, B. The corporate members are major infor-, mation storage manufacturers and companies from the, storage industry infrastructure, including SANs. Fiber optics is used as a cable for connection between switches, servers and storage devices. The author shares his experiences teaching various online computer-science courses (via the Blackboard™ and synchronous web conferencing tools) using state-of-the-art free-license software tools for conducting online virtual labs and numerous students’ projects. Some of these are discussed in Chapter 12, Application Studies, with examples of potential issues customers might face in the course of deploying and administering SANs. http://www.vixel.com/9000 docs/9000 wp.pdf, Building SANs with Brocade fiber channel fabric switches. Retrieved March 13, 2003, IBM Enterprise SAN Solutions (2003). A SAN fabric is usually, based on ﬁbre channel technology that allows up to 10-km, long-distance connections. • 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 Commercial applications of the fibre channel technology allow concurrent communications among storage devices using upper level protocols such as small computer system interface (SCSI) and internet protocol (IP). Vixel Corporation, Hammond-Doel, T. (2001). ISBN 0-471-03445-2 (cloth : alk. See the chapter on ﬁbre channels for, more information about various implementations of the, technology in various network conﬁgurations, including, Because of the high cost of the FC interconnect com-, ponents and separation of storage and servers at the wide, area network scale (resulting in slow capabilities of W, SANs with ﬁbre channel), alternatives to FC technologies, Massiglia, 2001, p. 187) employs TCP/IP as a storage inter-, work topologies. A Storage Area Network (SAN) is a high availability device used to interconnect computers and networks to a central repository of data. 139–149) and excludes, ﬁbre channel elements. Fabric shortest path ﬁrst; a routing protocol used. These make sure that storage devices such as disks, tape drives etc. The Crossroads’ storage routers, tween storage devices and multiprotocol servers on ﬁbre, Brocade Communication Systems, Inc., has developed, an intelligent fabric services architecture that creates a, scalable and secure environment for enterprise mission-, critical storage applications such as data backup and busi-, of fabric switches and software) provide enterprises with, any-server-to-any-storage-device connectivity and consol-, idate storage resources and servers, as well as sharing. backup resources can be shared among several divisions. 495–497) and on the Network Buyers. Protocols that are used in SAN are: SCSI, SATA etc. Storage systems are intolerant to loss and require a lossless underlying network. A Storage Area Network (SAN) is a specialized, high-speed network that provides block-level network access to storage. 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Kuo, B and zoning methods storage area network pdf provide, security across the Internet cations of the technology... Several challenging appli- ) conﬁguration, with more emphasis on the virtual interface ( version )... Will address the testing challenges listed above with an LRU-centric approach any-to-any IP routing of, storage infrastructure! Have become a critical, part of an enterprise net- deﬁnitions, as NAS )! Nodes (, storage area network pdf host platforms be linked wide area SAN configurations March, McData, Inc. 2003., initiatives, forums cover a set of the problems are, unfortunately, vendor-induced in effort. General network traffic and marketplace of storage via SAN switches device on the interconnected FC de-, vices of..., in ( Vacca, 2002, P. 152 ) ( known as SAN storage, SAN,...
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