Novell INTERNET STORAGE NAME SERVICE 1.0 -... Manuale utente

Novell

www.novell.com

novdocx (en) 6 April 2007

iSNS for Linux Administration Guide

Internet Storage Name Service

1.0

November 14, 2007

NOVELL INTERNET STORAGE NAME

SERVICE ADMINISTRATION GUIDE

novdocx (en) 6 April 2007

Legal Notices

Novell, Inc. makes no representations or warranties with respect to the contents or use of this documentation, and

specifically disclaims any express or implied warranties of merchantability or fitness for any particular purpose.

Further, Novell, Inc. reserves the right to revise this publication and to make changes to its content, at any time,

without obligation to notify any person or entity of such revisions or changes.

Further, Novell, Inc. makes no representations or warranties with respect to any software, and specifically disclaims

any express or implied warranties of merchantability or fitness for any particular purpose. Further, Novell, Inc.

reserves the right to make changes to any and all parts of Novell software, at any time, without any obligation to

notify any person or entity of such changes.

Any products or technical information provided under this Agreement may be subject to U.S. export controls and the

trade laws of other countries. You agree to comply with all export control regulations and to obtain any required

licenses or classification to export, re-export, or import deliverables. You agree not to export or re-export to entities

on the current U.S. export exclusion lists or to any embargoed or terrorist countries as specified in the U.S. export

laws. You agree to not use deliverables for prohibited nuclear, missile, or chemical biological weaponry end uses.

Please refer to www.novell.com/info/exports/ for more information on exporting Novell software. Novell assumes no

responsibility for your failure to obtain any necessary export approvals.

stored on a retrieval system, or transmitted without the express written consent of the publisher.

Novell, Inc. has intellectual property rights relating to technology embodied in the product that is described in this

document. In particular, and without limitation, these intellectual property rights may include one or more of the U.S.

patents listed at http://www.novell.com/company/legal/patents/ and one or more additional patents or pending patent

applications in the U.S. and in other countries.

Novell, Inc.

404 Wyman Street, Suite 500

Waltham, MA 02451

U.S.A.

www.novell.com

Online Documentation: To access the online documentation for this and other Novell products, and to get

updates, see www.novell.com/documentation.

novdocx (en) 6 April 2007

Novell Trademarks

For Novell Trademarks, see the Novell Trademark and Service Mark list (http://www.novell.com/company/legal/

trademarks/tmlist.html).

Third-Party Materials

All third-party trademarks are the property of their respective owners.

novdocx (en) 6 April 2007

Contents 5

Contents

novdocx (en) 6 April 2007

About This Guide 7

1 iSNS for Linux Overview 9

1.1 How iSNS Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.2 Benefits of iSNS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

1.3 What's Next . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2 iSNS for Linux Installation and Setup 11

2.1 Installing iSNS for Linux. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.2 Setting Up iSNS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.2.1 Configuring iSCSI Targets and Initiators to Use iSNS. . . . . . . . . . . . . . . . . . . . . . . . 11

2.2.2 Starting iSNS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.2.3 Creating iSNS Discovery Domains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.2.4 Creating iSNS Discovery Domain Sets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.2.5 Adding iSCSI Nodes to a Discovery Domain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.2.6 Adding Discovery Domains to a Discovery Domain Set . . . . . . . . . . . . . . . . . . . . . . 13

2.2.7 Setting Up the iSCSI Initiator to Use the iSNS Server . . . . . . . . . . . . . . . . . . . . . . . 14

A Documentation Updates 15

A.1 November 14, 2007 (Updates) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

A.1.1 Setting Up iSNS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

6iSNS for Linux Administration Guide

novdocx (en) 6 April 2007

About This Guide

novdocx (en) 6 April 2007

About This Guide

This guide includes information on the Novell®Internet Storage Name Service (iSNS) for Linux*,

which provides management of iSCSI target and initiator resources for automatic discovery.

The following topics are included in this documentation:

Chapter 1, “iSNS for Linux Overview,” on page 9

Chapter 2, “iSNS for Linux Installation and Setup,” on page 11

Audience

This guide is intended for intended for anyone involved in installing, configuring, and managing

iSNS.

Feedback

We want to hear your comments and suggestions about this manual and the other documentation

included with this product. Please use the User Comments feature at the bottom of each page of the

online documentation, or go to www.novell.com/documentation/feedback.html and enter your

comments there.

Documentation Updates

The latest version of this iSNS Administration Guide is available on the SLES 10 Documentation

Web site (http://www.novell.com/documentation/sles10/index.html#additional).

Documentation Conventions

In Novell documentation, a greater-than symbol (>) is used to separate actions within a step and

items in a cross-reference path.

A trademark symbol (®, ™, etc.) denotes a Novell trademark. An asterisk (*) denotes a third-party

trademark.

8iSNS for Linux Administration Guide

novdocx (en) 6 April 2007

iSNS for Linux Overview

novdocx (en) 6 April 2007

iSNS for Linux Overview

Storage area networks (SANs) can contain many disk drives that are dispersed across complex

networks. This can make device discovery and device ownership difficult. iSCSI initiators must be

able to identify storage resources in the SAN and determine whether they have access to them.

Internet Storage Name Service (iSNS) is a standards-based service that is available with SUSE

Linux Enterprise Server (SLES) 10 Support Pack 1. iSNS facilitates the automated discovery,

management, and configuration of iSCSI devices on a TCP/IP network. iSNS provides intelligent

storage discovery and management services comparable to those found in Fibre Channel networks.

This overview contains the following sections:

Section 1.1, “How iSNS Works,” on page 9

Section 1.2, “Benefits of iSNS,” on page 10

Section 1.3, “What's Next,” on page 10

1.1 How iSNS Works

For an iSCSI initiator to discover iSCSI targets, it needs to identify which devices in the network are

storage resources and what IP addresses it needs to access them. A query to an iSNS server returns a

list of iSCSI targets and the IP addresses that the initiator has permission to access.

Using iSNS, you create iSNS discovery domains and discovery domain sets. You then group or

organize iSCSI targets and initiators into discovery domains and group the discovery domains into

discovery domain sets. By dividing storage nodes into domains, you can limit the login process of

each host to the most appropriate subset of targets registered with iSNS, which allows the storage

network to scale by reducing the number of unnecessary logins and by limiting the amount of time

each host spends establishing login relationships. This lets you control and simplify the number of

targets and initiators that have access to each other.

Figure 1-1 iSNS Discovery Domains and Discovery Domain Sets

iSNS clients initiate transactions with iSNS servers using the iSNS protocol. They then register

device attribute information in a common discovery domain, download information about other

Discovery

Domain

Set

Discovery

Domain

Target Target TargetInitiator Initiator

Nodes

Target and

Initiator

10 iSNS for Linux Administration Guide

novdocx (en) 6 April 2007

registered clients, and receive asynchronous notification of events that occur in their discovery

domain.

iSNS servers respond to iSNS protocol queries and requests made by iSNS clients using the iSNS

protocol. iSNS servers initiate iSNS protocol state change notifications and store properly

authenticated information submitted by a registration request in an iSNS database.

1.2 Benefits of iSNS

Some of the benefits provided by iSNS for Linux include:

Provides an information facility for registration, discovery, and management of networked

storage assets.

Integrates with the DNS infrastructure

Provides access control for registered targets and initiators

Consolidates registration, discovery, and management of iSCSI storage

Simplifies storage management implementations.

Improves scalability compared to other discovery methods.

An example of the benefits iSNS provides can be better understood through the following scenario:

Suppose you have a company that has 100 iSCSI initiators and 100 iSCSI targets. Depending on

your configuration, all iSCSI initiators could potentially try to discover and connect to any of the

100 iSCSI targets. This could create a discovery and connection nightmare. By grouping initiators

and targets into discovery domains, you can prevent iSCSI initiators in one department from

discovering and connecting to the iSCSI targets in another department. The result is that the iSCSI

initiators in a specific department can only discover those iSCSI targets that are part of the

department’s Discovery Domain.

1.3 What's Next

For information on installing and configuring iSNS, see iSNS for Linux Installation and Setup.

Indice

Altri manuali Novell Software

Novell

Novell LINUX ENTERPRISE SERVER 10 SP2 - STARTUP GUIDE... Guida utente

Novell

Novell APPARMOR - AND Manuale

Novell

Novell ZENWORKS HANDELD MANAGEMENT 7 SP1 IR4 Manuale utente

Novell

Novell OPEN ENTERPRISE SERVER 2 SP2 - STORAGE SERVICES AUDITING CLIENT LOGGER UTILITY REFERENCE... Manuale di servizio

Novell

Novell ZENWORKS ENDPOINT SECURITY MANAGEMENT 3.5 Manuale utente

Novell

Novell EDIRECTORY 8.8 SP5 - TUNING GUIDE FOR UNIX... Guida rapida

Novell

Novell LINUX ENTERPRISE 11 SP1 - LINUX AUDIT Manuale utente

Novell

Novell LINUX ENTERPRISE SERVER 10 SP1 - ARCHITECTURE-SPECIFIC INFORMATION... Manuale

Novell

Novell ACCESS MANAGER 3.1 SP1 - ADMINISTRATION Manuale utente

Novell

Novell SERVER CONSOLIDATION MIGRATION TOOLKIT 1.2 - ADMINISTRATION GUIDE... Manuale di istruzioni

Novell

Novell GROUPWISE 7 - SECURITY POLICIES Manuale utente

Novell

Novell LINUX ENTERPRISE DESKTOP 10 SP1 - GNOME... Manuale utente

Novell

Novell iFOLDER 3.6 - READ ME 05-2008 Manuale utente

Novell

Novell LINUX ENTERPRISE SERVER 10 SP2 - ARCHITECTURE-SPECIFIC INFORMATION... Manuale

Novell

Novell SP2 - S Manuale di istruzioni

Novell

Novell CONSOLE ONE 1.3.X Manuale utente

Novell

Novell IFOLDER 3.8 - CROSS-PLATFORM Manuale utente

Novell

Novell SUPPORT ADVISOR - 04-2010 Manuale utente

Novell

Novell GROUPWISE 7 - INTERNET AGENT Manuale utente

Novell

Novell ZENWORKS ENDPOINT SECURITY MANAGEMENT 4.0 -... Manuale utente

Novell

Novell LINUX ENTERPRISE 10 SP1 - LINUX AUDIT Manuale utente

Novell

Novell GROUPWISE 7 - SECURITY POLICIES Manuale utente

Novell

Novell CLIENT FOR LINUX 1.2 Manuale utente

Novell

Novell LINUX ENTERPRISE DESKTOP 10 SP1 - START UP GUIDE... Manuale utente

Manuali Software popolari di altre marche

COMPRO

COMPRO COMPROFM Manuale utente

Muratec

Muratec OFFICEBRIDGE ONLINE Manuale utente

Oracle

Oracle Contact Center Anywhere 8.1 Manuale utente

Adobe

Adobe 65007312 - Photoshop Lightroom Manuale

Avaya

Avaya NULL One-X for RIM Blackberry Manuale utente

HP ProLiant BL420c Manuale utente

PS Audio

PS Audio PowerPlay Manuale del proprietario

Brady

Brady LOCKOUT PRO 3.0 Manuale di servizio

Avaya

Avaya Interaction Center Manuale utente

Texas Instruments

Texas Instruments TI-83 Plus Silver Edition Manuale

Oracle

Oracle Application 9i Manuale utente

Acer

Acer RDM Manuale utente

Canon

Canon Vixia HF21 Manuale utente

Canon

Canon ZR950 Manuale utente

Samsung

Samsung Auto Backup Manuale utente

Polycom

Polycom Vortex EF2201 Istruzioni per l'installazione e il funzionamento

Brocade Communications Systems

Brocade Communications Systems Brocade 8/12c Manuale utente

Lexmark

Lexmark Apps Manuale di servizio