Sun Microsystems Sun StorEdge Network Data Replicator 3.0 Manuale utente

Sun Microsystems, Inc.

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Sun StorEdge™

Network Data Replicator 3.0

Configuration Guide

Part No. 806-7550-10

June 2001, Revision A

Please

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iii

Contents

Preface v

1. Overview 1

Sun SNDR Software Description 1

Supported Hardware and Software 3

TCP/IP Connection Hardware Components 3

Network Multipathing 4

Applications 5

Architecture 5

2. Configuration Considerations 7

Volumes Eligible for Replication 7

Choosing Volume Level Protection 8

Bitmap Volumes for Scoreboard Logs 8

Choosing a Connection Medium to Link My Sites 9

ATM Link Advantages 9

Configuring Redundant Links Between Sites 10

Link Security 10

Choosing Between Synchronous and Asynchronous Replication 11

When To Suspend Replication to the Secondary Site 12

iv Sun StorEdge Network Data Replicator 3.0 Configuration Guide • June 2001

Configuring The Sun SNDR Software for Mutual Replication 12

Order-Dependent Writes and Volume Set Grouping 13

Recovery Considerations 14

Failing Over to the Secondary Site 14

Recovering the Primary or Secondary Site 14

Using The Sun SNDR and Sun StorEdge Instant Image Software 16

Sun SNDR Software and Sun StorEdge Fast Write Cache Software 17

One-to-Many and Multihop Volume Sets 18

Using The Sun SNDR Software in a Firewall Environment 19

Preface

The Sun StorEdge Network Data Replicator 3.0 Configuration Guide describes the Sun

StorEdge™ Network Data Replicator (Sun SNDR) software and general information

about its use. This guide is intended for system administrators who have experience

with the Solaris™ operating environment and related disk storage systems.

Before You Read This Book

To fully use the information in this document, you must have thorough knowledge

of the topics discussed in these books:

■Sun StorEdge Network Data Replicator 3.0 System Administrator’s Guide

■Sun StorEdge Network Data Replicator 3.0 Installation Guide

■Sun StorEdge Network Data Replicator 3.0 Release Notes

The Sun SNDR software must be installed as described in the installation and release

documentation.

vi Sun StorEdge Network Data Replicator 3.0 Configuration Guide • June 2001

Using UNIX Commands

This document may not contain information on basic UNIX®commands and

procedures such as shutting down the system, booting the system, and configuring

devices.

Refer to the software documentation that you received with your system.

Documentation Conventions

Typeface or

Symbol Meaning Examples

AaBbCc123 The names of commands,

files, and directories;

on-screen computer output.

Edit your .login file.

Use ls -a to list all files.

% You have mail.

AaBbCc123 What you type, when

contrasted with on-screen

computer output.

%su

Password:

AaBbCc123 Book titles, new words or

terms, words to be

emphasized.

Command-line variable;

replace with a real name or

value.

Read Chapter 6 in the User’s Guide.

These are called class options.

You must be root to do this.

To delete a file, type rm filename.

[ ] In syntax, brackets indicate

that an argument is optional. scmadm [–dsec][–rn[:n][,n]...] [–z]

{arg | arg} In syntax, braces and pipes

indicate that one of the

arguments must be specified.

sndradm -b {phost | shost}

Preface vii

Shell Prompts

Related Documentation

Shell Prompt

Cshell machine_name%

Cshellsuperuser machine_name#

Bourne shell and Korn shell $

Bourne shell and Korn shell superuser #

Application Title Part Number

man pages sndradm

scmadm

svadm

iiadm

N/A

Latest information SunStorEdgeNetworkDataReplicator3.0Software

Notes 806-7513

Sun StorEdge Instant Image 3.0 Release Notes 806-7678

Installation and User SunStorEdgeNetworkDataReplicator3.0

Installation Guide 806-7514

Sun StorEdge Instant Image 3.0 Installation Guide 806-7675

SunATM 3.0 Installation and User’s Guide

Sun ATM 4.0 Installation and User’s Guide 805-0331

805-6552

Sun Gigabit Ethernet FC-AL/P Combination Adapter

Installation Guide 806-2385

Sun Gigabit Ethernet/S 2.0 Adapter Installation and

User’s Guide

Sun Gigabit Ethernet/P 2.0 Adapter Installation and

User’s Guide

805-2784

805-2785

Sun Trunking 1.2.1 Installation and User's Guide 806-4207

viii Sun StorEdge Network Data Replicator 3.0 Configuration Guide • June 2001

Platform Notes: The Sun Quad FastEthernet Device

Driver 806-3989

Sun Enterprise 10000 InterDomain Networks User

Guide 806-4131

System administration Sun StorEdge Instant Image 3.0

System Administrator’s Guide 806-7677

SunStorEdgeNetworkDataReplicator3.0

System Administrator’s Guide 806-7512

TCP/IP and Data Communications Administration

Guide 805-4003

SunScreen 3.1 Administration Guide 806-4127

Solaris Bandwidth Manager 1.6 System

Administration Guide 806-4704

Configuration Sun Enterprise 10000 InterDomain Network

Configuration Guide 806-5230

Sun StorEdge Instant Image 3.0 Configuration Guide 806-7676

Application Title Part Number

Preface ix

Accessing Sun Documentation Online

A broad selection of Sun system documentation is located at:

http://www.sun.com/products-n-solutions/hardware/docs

A complete set of Solaris documentation and many other titles are located at:

http://docs.sun.com

For the latest version of released storage software documentation, go to:

http://www.sun.com/products-n-solutions/hardware/docs/Software/

Ordering Sun Documentation

For the latest version of storage software documentation, go to:

http://www.sun.com/products-n-solutions/hardware/docs/Software/

Fatbrain.com, an Internet professional bookstore, stocks select product

documentation from Sun Microsystems, Inc.

For a list of documents and how to order them, visit the Sun Documentation Center

on Fatbrain.com at:

http://www.fatbrain.com/documentation/sun

Sun Welcomes Your Comments

Sun is interested in improving its documentation and welcomes your comments and

suggestions. You can email your comments to Sun at:

docfeedback@sun.com

Please include Part No. 806-7550-10 in the subject line of your email.

xSun StorEdge Network Data Replicator 3.0 Configuration Guide • June 2001

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