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Iscsi: The Universal Storage Connection

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Iscsi: The Universal Storage Connection Cover

 

Synopses & Reviews

Publisher Comments:

iSCSI: The Universal Storage Connection is an informative overview and in-depth guide to the emerging iSCSI standard, the technology that enables data storage, access, and management over networks, intranets, and the Internet. The iSCSI protocol reduces the total cost of ownership of shared storage solutions and enables an organization to tie together disparate systems and data, including both server class systems and laptop and desktop systems. Numerous leading technology companies, including IBM®, Cisco Systems®, and Intel®, are currently supporting iSCSI initiatives.

Written for network and data storage professionals, this comprehensive book introduces iSCSI and explores its growing role within the data storage industry. It describes each element of the technology in detail—from session establishment through error handling—and examines the relationship between iSCSI and the SCSI protocol from which it evolved.

Specific topics discussed include:

  • iSCSI's use in small office, midrange, and high-end settings
  • TCP/IP fundamentals, and how they apply to iSCSI
  • The importance of data integrity
  • New hardware that addresses bandwidth and latency issues
  • iSCSI naming conventions
  • The establishment of a communication path between the host system and storage controller
  • Commands and data sequencing
  • Control of the flow of commands
  • Task management
  • Error handling
  • Companion technologies, including discovery and security processes
  • Backup and disaster preparation
  • iSCSI performance issues

In addition, the book includes an explanation of the technologies that hardware vendors are implementing to permit direct memory placement of iSCSI messages without additional main processor involvement.

A helpful icon appears throughout the book, mapping out appropriate reading tracks based on your technical level.

Comprehensive, clearly written, and organized for easy access, this iSCSI handbook serves as both an excellent starting point for those involved in data storage solutions and a guide to understanding the technically detailed Internet Engineering Task Force (IETF) iSCSI Standards document.

020178419XB09272002

Book News Annotation:

Written for network and data storage professionals, this guide introduces iSCSI and explores its role in the industry. It describes the major elements of the technology and examines the relationship between iSCSI and its predecessors. The book also includes a discussion of developing technologies and the direct memory placement of iSCSI messages. Hufferd is a manager with IBM.
Annotation c. Book News, Inc., Portland, OR (booknews.com)

Synopsis:

Includes bibliographical references (p. 323-327) and index.

Synopsis:

The new iSCSI protocol carries SCSI commands over IP networks to facilitate data transfers over intranets and to manage storage over long distances. This book offers System and Storage engineers a quick and easy way to become familiar with the iSCSI protocols with needed insight to its applicability.

About the Author

John L. Hufferd has been a key technical leader and manager within IBM for more than thirty-five years and currently directs projects dealing with networks, storage, and SANs. He is the technical coordinator for the iSCSI track of the IPS workgroup in the IETF standards association.

020178419XAB09272002

Table of Contents

(NOTE: Each chapter, except Chapter 1, begins with To the Reader and all chapters conclude with a Summary.

Credits and Disclaimer.

Preface.

1. The Background of SCSI.

SCSI BUS Interconnect.

Fibre Channel Interconnect.

iSCSI Interconnect.

File Servers and NAS.

2. The Value and Position of iSCSI.

The Home Office.

The Home Office and Serial ATA Drives.

The Small Office.

The Midrange.

The High End.

The Campus.

The Satellite.

The At-Distance Site.

The Central Site.

FC and iSCSI.

3. The History of iSCSI.

SCSI Over TCP/IP.

Measurements.

Cisco and IBM's Joint Effort.

iSCSI and IETF.

The End of the Story.

4. An Overview of iSCSI.

TCP/IP.

TCP/IP Summary.

iSCSI-Related Protocol Layers.

Protocol Summary.

Sessions.

Session Summary.

Protocol Data Unit (PDU) Structure.

PDU Structure Summary.

iSCSI and TOE Integration on a Chip or HBA.

TOE Integration Summary.

Checksums and CRC (Digests).

Checksum and CRC Digest Summary.

Naming and Addressing.

Details of Naming and Addressing.

Naming and Addressing Summary.

5. Session Establishment.

Introduction to the Login Process.

Login and Session Establishment.

Login PDUs.

The Login Request PDU.

The Login Response PDU.

iSCSI Sessions.

Authentication Routines.

Login Keywords.

Keywords and the Login Process.

Discovery Session.

6. Text Commands and Keyword Processing.

Text Requests and Responses.

PDU Fields.

Text Keywords and Responses.

Rules for Key=Value Pairs.

Rules for Keyword Value Negotiation.

Rules for Negotiation Flow.

Rules for Negotiation Failure.

7. Session Management.

Initiator Session ID.

Connection Establishment.

Data Travel Direction.

Sequencing.

Resending Data or Status.

Recap.

8. Command and Data Ordering and Flow.

Command Ordering.

Command Windowing.

Initiator Task Tag.

Design Example: Direct Host Memory Placement.

Data Ordering.

Target Transfer Tag.

Data Placement (A Form of RDMA).

9. Structure of iSCSI and Relationship to SCSI.

iSCSI Structure and SCSI Relationship.

SCSI Nexus.

10. Task Management.

Tagged and Untagged Texts.

11. Error Handling.

Error Recovery Levels.

Error Recovery Level 0.

Error Recovery Level 1.

Header Digest Recovery at the Initiator Side.

Header Digest Recovery at the Target Side.

Data Digest Recovery.

Error Recovery Level 2.

12. Companion Processes.

Boot Process.

Discovery Process.

Discovery Using Administrative Specifications.

Discovery Using SendTargets.

Discovery Using the Service Location Protocol.

Discovery Using iSNS.

Security Process.

To the Reader.

IPsec Features.

Access Control Lists.

MIB AND SNMP.

13. Synchronization and Steering.

Main Memory Replacement.

Errors and Congestion.

Missing TCP Segments and Marking.

Fixed-Interval Markers.

FIM Pointers.

Marker Implementation.

FIM Synchronization Scheme.

TCP Upper-Level-Protocol Framing (TUF).

The TUF Scheme.

The TUF Header.

Advantages and Disadvantages.

TUF/FIM.

14. iSCSI Summary and Conclusions.

Summary.

iSCSI Development History.

Conclusions.

iSCSI Network Management.

Ease of Administration.

Backup and Disaster Preparation.

Performance.

The Future.

Summary of Conclusions.

Appendix A: iSCSI Function PDUs.

Serial Number Arithmetic.

Asynchronous Message PDU.

Login Request PDU.

ISID, TSIH, and CID Values.

Login Response PDU.

Logout Request PDU.

Notes on the Logout Request PDU.

Implicit Termination of Tasks.

Logout Response PDU.

NOP-In PDU.

NOP-Out PDU.

Ready to Transfer (R2T) PDU.

Notes on the R2T PDU.

Reject PDU.

Notes on the Reject PDU.

SCSI (Command) Request PDU.

SCSI (Command) Response PDU.

SCSI Data-In PDU.

SCSI Data-Out PDU.

SNACK Request PDU.

Resegmentation.

Notes on the SNACK Request PDU.

Task Management Function Request PDU.

Notes on the Task Management Function Request PDU.

Task Management Function Response PDU.

Notes on the Task Management Function Response PDU.

Text Request PDU.

Text Response PDU.

Appendix B: Keys and Values.

AuthMethod.

AuthMethod Keys.

DataDigest.

DataPDUInOrder.

DataSequenceInOrder.

DefaultTime2Retain.

DefaultTime2Wait.

ErrorRecoveryLevel.

FirstBurstLength.

HeaderDigest.

IFMarker.

IFMarkInt.

ImmediateData.

InitialR2T.

InitiatorAlias.

InitiatorName.

MaxBurstLength.

MaxConnections.

MaxOutstandingR2T.

MaxRecvDataSegmentLength.

OFMarker.

OFMarkInt.

SendTargets.

SessionType.

TargetAddress.

TargetAlias.

TargetName.

TargetPortalGroupTag.

X-<VendorSpecificKey>.

X#<IANA-registered-string>.

Appendix C: SCSI Architecture Model.

SCSI-iSCSI Mappings.

Consequences of the Model.

I-T Nexus State.

SCSI Mode Pages.

Appendix D: Numbers, Characters, and Bit Encodings.

Text Format.

Appendix E: Definitions.

Appendix F: Acronyms.

Appendix G. References and Web Pointers.

Basic References for iSCSI.

References for SCSI-Related Items.

References for iSCSI Security and IPsec/IKE.

References That Indirectly Affect iSCSI.

Index. 020178419XT10112002

Product Details

ISBN:
9780201784190
Author:
Hufferd, John L.
Publisher:
Addison-Wesley Professional
Location:
Boston
Subject:
Management
Subject:
Programming Languages - General
Subject:
Programming - General
Subject:
Networking - General
Subject:
Computer networks
Subject:
Database Management - General
Subject:
Networking - Network Protocols
Subject:
Computer storage devices
Subject:
iSCSI
Subject:
Computer networks -- Management.
Subject:
Software Engineering - Programming and Languages
Copyright:
Edition Description:
Trade paper
Series Volume:
no. 87
Publication Date:
November 2002
Binding:
TRADE PAPER
Grade Level:
Professional and scholarly
Language:
English
Illustrations:
Yes
Pages:
368
Dimensions:
9 x 7.3 x 0.9 in 626 gr

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Iscsi: The Universal Storage Connection New Trade Paper
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$53.95 In Stock
Product details 368 pages Addison-Wesley Professional - English 9780201784190 Reviews:
"Synopsis" by , Includes bibliographical references (p. 323-327) and index.
"Synopsis" by , The new iSCSI protocol carries SCSI commands over IP networks to facilitate data transfers over intranets and to manage storage over long distances. This book offers System and Storage engineers a quick and easy way to become familiar with the iSCSI protocols with needed insight to its applicability.
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