Hitachi Global Link Manager Software Installation and Configuration Guide

Summarizing the Path Statuses for the Whole System
Global Link Manager can also display a summary of path statuses (the
number of paths in each status). You can check path availability in the entire
system without having to check the status of each host individually.
Support for Path Bandwidth Control
Global Link Manager enables you to specify the format for viewing path
information, such as by storage system or by CHA port. You can also use
Global Link Manager to adjust the bandwidth of paths (the actual number of
online paths) among multiple user applications or hosts.
Collective Management of Error Information from Multiple Hosts
To quickly detect an error that occurs on a host in a multi host system and
take appropriate action, you need to set up the environment to inform you
about the error cause and location. To facilitate collective management, you
can set up Global Link Manager so that path error information (detected by
the multipath management software on each host) is reported to you as
alerts. You can use any application to manage the alert information that is
transferred from the Global Link Manager server to another server (SNMP
transfer destination server).
Global Link Manager System Configuration
Global Link Manager performs path management in a medium-scale or large-
scale SAN environment that consists of multiple storage systems and multiple
hosts. The following figure illustrates a basic Global Link Manager system
configuration.
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Global Link Manager System Configuration and Requirements
Hitachi Global Link Manager Installation and Configuration Guide (Web Version)