Table Of Contents - Hitachi XP P9500 User Manual

Preface..................................................................................................xi
Intended audience....................................................................................................xii
Product version........................................................................................................xii
Release notes...........................................................................................................xii
Document revision level............................................................................................xii
Document organization.............................................................................................xii
Referenced documents.............................................................................................xiii
Document conventions.............................................................................................xiii
Convention for storage capacity values......................................................................xv
Getting help............................................................................................................xvi
Comments..............................................................................................................xvi
1 Overview of HDLM................................................................................1-1
What is HDLM?.......................................................................................................1-2
HDLM Features.......................................................................................................1-3
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 the Lightning 9900V Series, Hitachi USP, Universal Storage
Platform V/VM, Virtual Storage Platform, Hitachi AMS2000 Series, or Hitachi
SMS......................................................................................................2-11
Load Balancing Algorithms...............................................................................2-11
Performing Failovers and Failbacks Using Path Switching.........................................2-13
Automatic path switching................................................................................2-14
Automatic failovers................................................................................2-14
Priority of Switching Destination Paths....................................................2-15
Automatic failbacks................................................................................2-17
Manual path switching.....................................................................................2-18
Hitachi Dynamic Link Manager User Guide (for AIX(R))
Contents
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