HP P9500 Bedienungsanleitung PDF herunterladen (Seite 3)

Contents

Preface.................................................................................................xiii

Intended audience...................................................................................................xiv

Product version.......................................................................................................xiv

Release notes..........................................................................................................xiv

Document revision level...........................................................................................xiv

Document organization.............................................................................................xv

Related documents...................................................................................................xv

Document conventions.............................................................................................xvi

Conventions for storage capacity values....................................................................xvi

Accessing product documentation............................................................................xvii

Getting help...........................................................................................................xvii

Comments..............................................................................................................xvii

1 Overview of HDLM................................................................................1-1

What is HDLM?.......................................................................................................1-2

HDLM Features.......................................................................................................1-2

2 HDLM Functions...................................................................................2-1

Devices Managed by HDLM......................................................................................2-3

System Configuration..............................................................................................2-3

LU Configuration.....................................................................................................2-5

Program Configuration............................................................................................2-6

Position of the HDLM Driver and hdisk......................................................................2-7

Distributing a Load Using Load Balancing..................................................................2-8

Paths to which load balancing is applied...........................................................2-10

When Using the Thunder 9500V Series, or Hitachi AMS/WMS Series..........2-10

When Using Other Than the Thunder 9500V Series and Hitachi AMS/WMS

Series...................................................................................................2-11

Load Balancing Algorithms...............................................................................2-12

Performing Failovers and Failbacks Using Path Switching.........................................2-14

Automatic path switching................................................................................2-14

Automatic failovers................................................................................2-14

Priority of Switching Destination Paths....................................................2-16

Automatic failbacks................................................................................2-18

Manual path switching.....................................................................................2-19

iii

Hitachi Dynamic Link Manager User Guide for AIX

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HP P9500 Bedienungsanleitung Seite 3