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Storage Area Networks: Designing and Implementing a Mass Storage System
The complete guide to SAN technology for every implementer and manager! Every month, enterprises require more information, delivered faster, with greater reliability—and traditional data storage methods no longer suffice. Enter the Storage Area Network (SAN), which can store enormous amounts of data, serve it at lightning speed, scale to meet accelerating growth, and deliver unprecedented reliability. Now, there's a complete guide to SAN technology for every IT professional and decision-maker. Storage Area Networks covers it all: key concepts, components, applications, implementation examples, management, and much more. Coverage includes:

What SANs are, what they can do, and how they overcome the critical limitations of earlier data storage systems 

Evolving to SANs: best practices for building SANs from your legacy storage topologies 

An overview of Fibre Channel, the key enabling technology for SANs 

SAN configuration, device, and connectivity options—in depth 

Well-managed SANs: day-to-day administration, backup, restore, and disaster recovery 

A detailed review of Hewlett-Packard's market-leading SAN product line: Fibre Channel chips, host bus adapters, hubs, arrays, tape libraries, bridges, switches, and more

Storage Area Networks also previews the future of SAN technology: policy-based SANs, emerging applications, and more. Whether you're considering a SAN for the first time, or you want a comprehensive management reference for the SAN you've already invested in, this book offers the insights, techniques, and guidance you need right now.
Introduction to Storage Area Network, SAN
Storage Area Network (SAN) offers simplified storage management, scalability, flexibility, availability, and improved data access, movement, and backup. 
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. 

This redbook gives an introduction to SAN. It illustrates where SANs are today, who are the main industry organizations and standard bodies active in SANs, and it positions IBM’s approach to enabling SANs in its products and services.

Designing An IBM Storage Area Network
As we now appear to have safely navigated the sea that was the transition from one century to the next, the focus today is not on preventing or avoiding a potential disaster, but exploiting current technology. There is a storm on the storage horizon. Some may call it a SAN-storm that is approaching. 
Storage Area Networks have lit up the storage world like nothing before it. SANs offer the ability to move data at astonishingly high speeds in a dedicated information management network. It is this dedicated network that provides the promise to alleviate the burden placed on the corporate network in this e-world. 

Traditional networks, like LANs and WANs, which have long been the workhorses of information movement are becoming tired with the amount of load that is placed upon them, and usually slow down just when you want them to go faster. SANs offer the thoroughbred solution. More importantly, an IBM SAN solution offers the pedigree and bloodlines which have been proven in the most competitive of arenas. 

Whichever way you look at the SAN-scape, IBM has a solution, product, architecture, or service, that will provide a comprehensive, enterprise-wide, SAN-itized environment. 

This redbook is written for those professionals tasked with designing a SAN to provide solutions to business problems that exist today. We propose and detail a number of solutions that are available today, rather than speculating on what tomorrow may bring. 

In this IBM Redbook we have two objectives. The first is to show why a SAN is a much-sought-after beast, and the benefits that this brings to the business world. We show the positioning of a SAN, the industry-wide standardization drives to support a SAN, introduce Fibre Channel basics, describe the technical topology of a SAN, detail Fibre Channel products, and IBM SAN initiatives. All of these combine to lay the foundations of what we will cover with our second objective. This is to weed out the hype that is associated with SANs. We show practical decisions to be considered when planning a SAN, how a SAN can be created in a clustering environment, how a SAN can be created to consolidate storage, how to extend distances using a SAN, and how to provide a safe environment that will failover if necessary. 

To support our objectives, we have divided this book into two parts: the first part shows why you would want to implement a SAN, as well as the products, concepts, and technology which support a SAN, and in the second part, we show the design approach and considerations of a SAN, and how this can be further expanded and exploited.

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