Storage Networks Explained has much to recommend it.
…a rarity in the literature of digital data storage – a complete exposition of both the base subject matter and its applications, which at the same time offers a level of readability making it suitable as an introduction to the subject. Storage Networks Explained is also flexible. It can be read cover-to-cover, browsed, or used as a reference. I recommend Storage Networks Explained as an essential component of any active information technology library.”
Paul Massiglia, Technical Director, VERITAS Software Corporation
Storage networks will become a basic technology like databases or local area networks. According to market research, 700f external storage devices will be connected via storage networks in 2003. The authors have hands-on experience of network storage hardware and software, they teach customers about concrete network storage products, they understand the concepts behind storage networks, and show customers how storage networks address their business needs.
Storage networks provide shared access to stored data from multiple computers and servers, thus increasing storage efficiency and availability. They permit information management functions such as backup and recovery, data mirroring, disaster recovery, and data migration to be performed quickly and efficiently, with a minimum of system overhead.
This book explains how to use storage networks to fix malfunctioning business processes, covering the technologies as well as applications. A hot topic that will become increasingly important in the coming years.
* One of the first books to focus on using rather than building storage networks, and how to solve problems.
* Looking beyond technology and showing the true benefits of storage networks.
* Covers fibre channel SAN, Network Attached Storage, iSCSI and InfiniBand technologies.
* Contains several case studies (e.g. the example of a travel portal, protecting a critical database)
* Endorsed by the Storage Networking Industry Association.
* Written by very experienced professionals who tailored the book specifically to meet customer needs including support with supplementry material on Troppens website and Preface written by Tony Clark.
Provides basic application information key for systems administrators, database administrators and managers who need to know about the networking aspects of their systems. As well as systems architects, network managers, information management directors and decision makers.
This book also supports applications for graduate students and other relevant courses in the field.
Awarded Best System Administration Book 2005 by the Linux Journal
Download Description
Warehouses are often seen as a necessary evil: places that stop the flow of goods and thus increase costs without adding value. But the truth is that they have a critical part to play in supply chain management, and warehouse managers should be centrally involved in the strategic aspects of any business. Excellence in Warehouse Management covers everything you need to know to manage warehouse operations as part of a streamlined and holistic system, fine-tuned to serve the customer and drive the bottom-line. With thinking points, self-assessment exercises and case studies Stuart Emmett challenges you to consider your own operations in a new way, and plot a course into the future.
From the Back Cover
Stored data and information is the biggest asset of any company.
If stored data is lost, getting it back is expensive and time-consuming – if at all possible. Data networks must, therefore, be designed with built-in redundancy and for high availability. Storage networks permit information management functions such as backup and recovery, data mirroring, disaster recovery, and data migration to be performed quickly and efficiently, with a minimum of system overhead. Consequently, anyone who is involved in the planning or the operation of IT systems requires a basic knowledge of the principles and the use of storage networks.
After reading Storage Networks Explained you will be familiar with
* The basic concepts of storage networks like I/O-techniques, disk subsystems, virtualization, NAS, and SAN file systems.
* The design of storage networks to provide flexible, high-available, and scaleable IT-systems.
* The use of storage networks for data sharing, device sharing, and data protection.
* The management of storage networks using SNMP, SMI-S and IEEE 1244.
Storage Networks Explained provides system administrators and system architects as well as students with the tools they need for the optimal selection and the cost-effective use of storage networks, an indispensable technology in view of our ever-growing storage quantities.
“Storage Networks Explained has much to recommend it …a rarity in the literature of digital data storage – a complete exposition of both the base subject matter and its applications, which at the same time offers a level of readability making it suitable as an introduction to the subject. I recommend Storage Networks Explained as an essential component of any active information technology library.”
Paul Massiglia, Technical Director, VERITAS Software Corporation
“Storage Networks continue to proliferate, and newer technologies now enable their deployment in small business environments through enterprise data centers. This text is a ‘must read’ for all IT users involved in these exiting new technologies and solutions.”
Sheila Childs, Chair, Storage Networking Industry Association
“Comprehensive. Thorough. Easy to read. Well worth the time…”
Jai Menon, IBM Fellow, Director and Chief Technologist, Storage Systems Architecture and Design
About the Author
Ulf Troppens and Rainer Erkens are employed at IBM TotalStorage Interoperability Center in Mainz, a testing, development and demonstration laboratory for storage products and storage networks. Both authors work at the interface between technology and customers. Their duties include the testing of new products and the validation of concepts on the basis of customer environments set up in the laboratory. They present the latest hardware and software products in the field of storage networks to customers and discuss the set up test environment with them.
Ulf Tropes studied Computer Science at the University of Karlsruhe until 1995. Since 1989 he has been primarily involved in the administration of Unix systems, storage systems, data and storage networks and distributed applications. In April 2004 Ulf joined Wolfgang’s team to help with the roll-out of a software for tape library virtualization.
Rainer Erkens studied Mathematics at the University of Mainz until 2000. His experience in the management of computers and the management of distributed applications goes back to 1992. Since 2000 he has been working primarily with storage systems and storage networks. In February 2004 he was appointed to Chairman of the SNIA Europe Solutions Committee.
Wolfgang Müller is currently working as a software architect in the Storage Software Development Department at IBM in Mainz, Germany, where the focus is on software development projects supporting open standards such as SMI-S/CIM/WBEM and IEEE 1244. He received his Dipl.-Inform. (FH) degree in computer science from the University of Applied Sciences, Darmstadt, Germany, in 1993.
1 Introduction 1
1.1 Server-Centric IT Architecture and its Limitations 1
1.2 Storage-Centric IT Architecture and its Advantages 3
1.3 Case Study: Replacing a Server with Storage Networks 4
1.4 The Structure of the Book 7
PART I Technologies for Storage Networks 11
2 Intelligent Disk Subsystems 13
2.1 Architecture of Intelligent Disk Subsystems 14
2.2 Hard Disks and Internal I/O Channels 16
2.3 JBOD: Just a Bunch of Disks 19
2.4 Storage Virtualization using RAID 20
2.5 Different RAID Levels in Detail 22
2.5.1 RAID 0: block-by-block striping 23
2.5.2 RAID 1: block-by-block mirroring 24
2.5.3 RAID 0+1/RAID 10: striping and mirroring combined 24
2.5.4 RAID 4 and RAID 5: parity instead of mirroring 28
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