Hitachi Global Link Manager Software Installation and Configuration Guide

Global Link Manager Overview
Global Link Manager uses multipath management software path control
functionality to provide integrated path management for large-sized system
configurations. While multipath management software manages paths for a
host, Global Link Manager batch-manages paths for multiple hosts. Global
Link Manager supports the following multipath management software:
• HDLM (Hitachi Dynamic Link Manager)
• DMP (VxVM Dynamic Multipathing function)
• HP-UX multipathing
When you use a large-sized system configuration containing many hosts, the
workload for managing paths from each host grows in proportion to the size
of the system. Global Link Manager enables you to reduce the workload by
providing unified management of the path information for multiple hosts.
Global Link Manager also helps you to improve system reliability, by switching
path statuses while taking into account the balancing of workloads in the
whole system, by enabling the reporting of error information (alerts) from
each host, and by enabling you to quickly solve problems.
Global Link Manager collects information about paths from multiple hosts on
which multipath management software is installed, and the Global Link
Manager server collectively manages this information. Collected information
can be viewed and controlled by multiple users who manage the hosts from
client machines. The following figure shows an example of a 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)