HP Hitachi Dynamic Link Manager Software Licenses - Manual (Page 3)

Contents
Preface................................................................................................. xv
Intended audience...................................................................................................xvi
Product version....................................................................................................... xvi
Release notes..........................................................................................................xvi
Document revision level........................................................................................... xvi
Document organization........................................................................................... xvii
Related documents................................................................................................. xvii
Document conventions........................................................................................... xviii
Conventions for storage capacity values.................................................................... xix
Accessing product documentation.............................................................................xix
Getting help............................................................................................................ xix
Comments............................................................................................................... xx
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
System Configuration Using an FC-SAN.............................................................. 2-3
System Configuration Using an IP-SAN...............................................................2-5
LU Configuration.....................................................................................................2-7
Program Configuration............................................................................................ 2-8
Position of the HDLM Driver and HDLM Device........................................................ 2-10
Logical Device Files for HDLM Devices.................................................................... 2-11
Distributing a Load Using Load Balancing................................................................2-14
Paths To Which Load Balancing Is Applied........................................................2-15
When Using the Thunder 9500V Series, or Hitachi AMS/WMS series..........2-15
When Using Other Than the Thunder 9500V Series and Hitachi AMS/WMS
Series................................................................................................... 2-16
Load Balancing Algorithms...............................................................................2-17
Performing Failovers and Failbacks Using Path Switching......................................... 2-18
Automatic Path Switching................................................................................ 2-19
Automatic Failovers............................................................................... 2-19
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Hitachi Dynamic Link Manager (for Linux®) User Guide